Southwark Development Appraisal
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Transcript of Southwark Development Appraisal
BOROUGHDESIGN REPORT
UNIVERSITY OF WESTMINSTER | AURD717 DEVELOPMENT PROCESS | SIMONE GOBBER
BOROUGHINTRODUCTION TO THE SITEPLANNING FOR THE COMMUNITYEXPLOITABLE AREADEFINING THE SITEDESIGN PRINCIPLESMASSING AND SCALEPARAMETERSSPATIAL LAYOUTSUN AND SHADOWGROUND FLOOR PLANFUNCTIONSSECTIONSOPEN SPACESFUTURE ARMATURE
FINANCIAL APPRAISAL
SITE1SITE2SITE1 + SITE2DIFFERENT OPTIONS
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INDEXpage 2
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page 3
INTRODUCTION TO THE SITEpage 4
A city in transformation
As part of Southbank, the Borough area is undergoing a massive process of transformation, that will in the close future completely redefine its character. The present study is testing different development options, aiming to provide fruitful indication for the time to come.
View of the area
PLANNING FOR THE COMMUNITYpage 5
Common issues, community solutions
Any radical urban transformation risks to compromise the life of the commu-nity of residents. The main challenge of the redevelopment is to respond to the strong demand of new housing in the area, without compromising the provision of green areas and public open space.
Children demonstration against the redevelopment of Brandon House
One of the sign at the “March for Homes”that took place in London iin 2015.
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use restriction
height restriction
no restriction
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EXPLOITABLE AREApage 6
Where to intervene?
Matters of fragmented land owner-ship and pre-existing restriction often compromise the viability of radical de-velopment schemes. For this reason in this study it was chosen to intervene only on the sites that have been iden-tified as more likely to be changing in the next future.
RESTRICTIONS
DEMOLITION
Most of the buildings demolished will be redeveloped in place maintaining the same function. As for the former Brandon House, in this scheme it has been adopted the redevelopment by Allies and Morrison, whose planning consensus has already been given by the local authority.
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site1(net area of intervention)
2.5 HA
site30.24 HA
site20.97 HA
site 20.97 HA
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DEFINING THE SITEpage 7
One area, different sites.
Due to the current complexity and fragmentation of the area, it was cho-sen to divide what has been identified as exploitable area into three different sites. As for the main one, the evalua-tion will consider both the entire site and the net area of intervention.
site 30.24 HA
site 15.2 HA
The proposed scheme allows the re-developement of the three sites as dif-ferent operetions in terms of time and management. Nevertheless, this brief suggests design elements and prin-ciples in order to achieve a cohesive transformation for the entire area.
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DESIGN PRINCIPLESpage 8
Development guidelines
The transformation of the area is led by few simple principles making the new development cohesive with the pattern of buildings and spaces of the exsisting urban fabric, and refer ing at the same time to forms and typologies occurring in similar contemporary de-velopment in London
Increasedpermeability
Communityopen space
Densifyingthe urban fabric
A widerpublic realm
Shared privateopen space
Agopuncturalinfill
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page 9
Considering options
The area currently presents buildings and spaces that vary dramatically from the two stories Red Cross cottages to the planned eight stories redevelop-ment of Brandon House. At the same time, it belongs to a broader area in London where skyscrapers coexist with suburban-like elements.
MASSING AND SCALE
View of the study model
The different options presented in this study take in consideration the diverse context of the area, proposing on a similar spatial layout three different approaches in terms of the scale and the impact of the new development.
MASSING AND SCALE: OPTION 1page 10
Climbing over the top
The current guidance from the local planning authority suggests that the ideal height for any new development should be between six and eight sto-ries, reflecting the current state of the area. At the same time several high rise buildings appeared recently in the surroundings of the sites.
View of the study digital model
This created a precedent in the area for development over the guidance standards, changing the local charac-ter and expanding the range of height difference between buildings. The first option takes this into account, testing the impact of medium rise elements up to fifteen stories height.
MASSING AND SCALE: OPTION 2page 11
Six to seven storeys
The second option presented sets a limit of six stories for the new develop-ment, allowing an extra level for roof top houses. The general height varies according to the context, down to two to four stories for new building adja-cent to listed buildings such as the Red Cross cottages.
View of the study digital model
MASSING AND SCALE: OPTION 3page 12
Refurbishment vs demolition
In the third presented option the two existing housing estates on the site (formerly social housing) are retained and refurbished. While mitigating the visual an social impact of the new de-velopment, this option drastically re-define the amount of total units that the scheme can deliver.
View of the study digital model
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9000 sqmcurrently on site
17% of total area
17,400 sqm+93%
1/3 of the entire site
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PARAMETERS: PUBLIC SPACEpage 13
Publicly accessible open space
Developing an area with a high pro-portion of unbuilt space is always per-ceived as a loss from the residents.It is therefore of extreme importance to distinguish generic unbuilt space from the open space that is publicly accessible and presents a high envi-ronmental quality.
Pubblicly accessible open space currently on site
The new scheme takes this into max-imum consideration, not only main-taining and increasing the area dedi-cated to gardens and urban squares, but also improving the streetscape by introducing shared surfaces and enlarged pavements, reclaiming the streets as public space.
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2,700 sqmbenchmark
for 270 children
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PARAMETERS: DOORSTEP GARDENSpage 14
Space for everyone
Parallel to the increasing of public open space, the current scheme rede-fines the amount and the quality for the provision of shared private space. This constitutes not only a strate-gic environmental component of the scheme, but also a significant visual amenity for the residents.
At the same time, it provides an amount of doorstep open space that can potentially be turned into play-ground for up to 270 new children in the area. The access to these spaces, limited to the residents of the singu-lar blocks, guarantees safety and con-trolled maintainance costs.
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16,00030% of the entire siteis permeable surface
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PARAMETERS: PERMEABILITYpage 15
A breathing city
Permeable surfaces are a key factor in preventing the overloading of the city drainage system in case of heavy rain. At the same time, they contribute in collecting and filtering pollutant ele-ments from the air, they mitigate the heath-island effects and provide habi-tat for urban wildlife.
Green roofs have been adopted on most of the scheme in order to com-pensate the limited provision of per-meable surface at ground level, due to the buildings footprint and matters of maintainance and cost for the paving of the circulation areas.
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SPATIAL LAYOUTpage 16
Different blocks, different scale
The definition of the form and scale of the proposed new blocks takes in con-sideration the fragmented and diverse carachter of the area. Where possible, big scale blocks where introduced, in order to allow the introduction of dif-ferent functions and flexibility in the range of units.
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Completing the scheme is a series of small scale infill interventions, filling the gaps in between existing and new buildings, contributing not only to achieve higher density standards, but also to redefine the spatial layout of the area.
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SPATIAL LAYOUT: BLOCKSpage 17
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SUN AND SHADOW
MORNING
NOON
AFTERNOON
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More open space, more light
The increased public and private open space, and the general orientation of the buildings, guarantees an optimal provision of direct sun light to the area. The impact of the medium-rise buildings is limited by their location and position setting back from the main street front.
sun and shadow simulation - equinox (mid march - mid september)
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page 19
Active streets, active city
In the general outline for the development of the area, a great attention has been given to deliver a constantly active ground floor, embracing the gardens and the other public spaces with active building fronts, limiting back service areas and avoiding blind spaces.
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0.21 parking space ratio
139 places/651 units
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A viable and liveable city
While suggesting a development largely based on residential space (as suggeste by the general guidelines for the area and the outcome of market analysis), the introduction of mixed use blocks guarantees a viable and liveable mix of activities, attractions for visitors and job opportunities
RESIDENTIAL
HOTELS
OTHER COMMERCIAL
HIGH GRADE OFFICE
LEISURE
RETAIL
COMMUNITY FACILITY
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A place called home
The provision of residential space is an answer to the current high demand for homes in the area, and a legacy to the carachter of the area. Nevertheless, new office and hotel space has been inserted in proximity to the most ac-tive sides of the site, such as Borough High Street and London Bridge.
RESIDENTIAL
HOTELS
OTHER COMMERCIAL
HIGH GRADE OFFICE
LEISURE
RETAIL
COMMUNITY FACILITY
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Over the top
Rather than just being a roof, the use of the top of most of the buildings have been optimised by introducing extra concentrated residential space and rows of penthouse, at the same time an ironic tribute to a typical typology of the area and a response to a local high demand for luxury units.
RESIDENTIAL
HOTELS
OTHER COMMERCIAL
HIGH GRADE OFFICE
LEISURE
RETAIL
COMMUNITY FACILITY
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SECTION 1
The scale of the new intervention reduces
drastically in proximity of listed buildings,
such as the Red Cross cottages.
The school is enclosed by double storey
maisonettes, allowing a continuously active
front on the perimetral street.
Inserted at the core of the central mixed
use block, the new school and the residential
upper floors share the same courtyard at
different levels.
RESIDENTIAL
HOTELS
OTHER COMMERCIAL
HIGH GRADE OFFICE
LEISURE
RETAIL
COMMUNITY FACILITY
page 24
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SECTION 2
Small scale infill interventions mediate
the relationship between the new
development and the existing context.
Another role of the infill intervention is
to complete existing blocks, redefining
their fronts.
Roof top penthouses contribute to define
the character of the area. The North-
South orientation of the streets provides
sufficient sun light even in the narrower
sections.
RESIDENTIAL
HOTELS
OTHER COMMERCIAL
HIGH GRADE OFFICE
LEISURE
RETAIL
COMMUNITY FACILITY
SECTION 3page 25
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By covering the main parking areas inside
the blocks, it increases the permeable
surface and the provision of doorstep
outdoor space.
The block hosting the hotel in the northern
site embraces the existing building, redefining
an otherwise blind wall.
Stepping back facades allows taller buildings
to fit in the original streetscape of Union
Street
RESIDENTIAL
HOTELS
OTHER COMMERCIAL
HIGH GRADE OFFICE
LEISURE
RETAIL
COMMUNITY FACILITY
RESIDENTIAL
HOTELS
OTHER COMMERCIAL
HIGH GRADE OFFICE
LEISURE
RETAIL
COMMUNITY FACILITY
page 26
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SECTION 4
Enclosed by new buildings opening to
the garden, the Crossbones cemetery is
landscaped and open to the public.
At the South side of the development,
lower buildings interact with the existing
ones.
A new mixed use infill intervention, hosting
at its lower level community facilities,
provides a new access to Union street.
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An enhanced public realm
A combination of traditional streets and shared surfaces with limited car access guarantees a fully functional distribution in the area and an im-proved streetscape for people walking accross the area and all the different users of the open space.
OTHER OPEN SPACE
PLAYGROUND
GREEN AREAS
GROUND FLOORPRIVATE SPACE
VEHICULAR MOVEMENT
SHARED SURFACELIMITED CAR ACCESS
EXISTING BUILDINGS
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FUTURE ARMATUREpage 29
Visions for the future
The proposed development scheme is a fundamental step supporting the transformation of the entire Borough area. It will promote the regeneration of the High Street by consolidating the inner part of the block, providing more living space and new commercial space in strategic locations.
Future armature for the area
At the same time, it will enrich the lo-cal environment through the redesign of the existing open spaces, the crea-tion of new ones, and the promotion of Union Street as part of a network of quality leisure urban spaces for res-idents and visitors.
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FINANCIAL APPRAISALpage 30
Financial appraisal
The one outlined in the following pag-es is the financial appraisal for the proposed development scheme, and the comparison of the three different options.
FINANCIAL APPRAISAL: SITE1page 31
PG Urban Design Spreadsheet B:Detailed Development Appraisal
23/03/2015
OPTION1
Non-residential uses
Floorspace by use: Gross: Net:rental value/
sq.m: yield: Total value: Abitable rooms:
Retail 1514 1287 £ 250 6.00% £ 5,362,083 47Leisure or secondary retail 662 563 £ 180 6.50% £ 1,558,246 20High grade Office/Commercial 4098 3483 £ 600 5.00% £ 41,799,600 127Other commercial use 588 500 £ 450 6.00% £ 3,748,500 18Hotels 0 n/a n/a n/a £ 0 #VALUE!Brandon House redevelopment 4800 4080 £ 425 5.50% £ 31,527,273 148Refurbished buildings 0 0 £ 200 10.00% £ 0 0Total area of retained non-residential bldgs. 25475 21654 n/a n/a £ 141,565,934 787Community facilities (inc sect 106) 4036 0 n/a n/a
New gross commercial floor area 6862
Residential: all dwellings
Flats for sale Total units: Area/unit sales value/unit:Gross area
total: Total value: Abitable rooms:
1-bed flats 84 55 £ 600,000 5435 £ 50,400,000 852-bed flats 182 75 £ 850,000 16059 £ 154,700,000 3653-bed flats 58 100 £ 1,100,000 6835 £ 63,910,000 1754-bed+ flats 6 110 £ 1,200,000 815 £ 7,560,000 26Brandon House redevelopment 1 4284 £ 8,500 5040 £ 36,414,000 100Sub-total 330 34185
Houses for sale Total units: Area/unit sales value/unit:Gross floor area
total: Total value: Abitable rooms:
2-bed 14 80 £ 950,000 1120 £ 13,300,000 293-bed 42 105 £ 1,200,000 4410 £ 50,400,000 127Sub-total 56 5530 Abitable rooms ratio:
Flats for rent (affordable) Total units: Area/unitsales
value/sq.m:Gross floor area
total: Total value: Abitable rooms:Gross floor area
total: Abitable rooms: Ratio:
1-bed flats 36 50 £ 4,250 2118 £ 7,650,000 372-bed flats 84 75 £ 4,250 7412 £ 26,775,000 169 49569 1152 433-bed flats 43 100 £ 4,250 5047 £ 18,232,500 1304-bed flats 3 100 £ 4,700 318 £ 1,269,000 9Brandon House redevelopment 1 1836 £ 4,250 2160 £ 7,803,000 43Existing retained residential total area 1 9155 £ 6,375 10770 £ 58,359,938 213Sub-total 168 19747
Extras units sqmt/unitAdd'l sales value/unit Total value:
Flats for sale with park view 122 £ 25,000 £ 3,050,000
sub-basement parking spaces - total 76 25 1900
sub-basement parking spaces - for sale 66 25 £ 10,000 £ 660,000
Gross floor area total: Total value:
Total abitable rooms:
Total (new dwelling units only) 554 56769 £ 726,045,074 2407 101776
Affordable housing as proportion of total (including retained buildings) 29%
Hotels: Dwelling unit sizes (social housing and typical market units)
bed-spaces all units m2 housesCapital value/room @ 80% occupancy rates £ 200,000 studio 30-50m2 40
Hotel quality (no of stars 2, 3 4 or 5) 4 1-bed 40-60m2 55Gross area of bedroom floors 0 2-bed 60-90m2 80 65-100m2
Gross area of bedroom floors 0 3-bed 80-120m2 90 90-130m2
Average bedroom suite size 20 4-bed 100-150m2 110 110-180m2
No of bedrooms 0
Gross floor area of hotel 0 GDV/sq.m (Gross Development Value for social housing)Ground and upper floor ancillary areas 0 Social rent £ 4,250
Capital value £ 0 Shared ownership £ 4,700
Number of units (total):
Typology:Number of
units:
1B 108key: 2B 194B = bedroom 3B 63H = house 4B 9V = view 2BH 14
3BH 421BV 122BV 723BV 38TOTAL 552
University of Westminster 23/03/2015 Postfraduate Urban Design
FINANCIAL APPRAISAL: SITE1page 32
PG Urban Design Spreadsheet B:Detailed Development Appraisal
23/03/2015
OPTION1
Non-residential uses
Floorspace by use: Gross: Net:rental value/
sq.m: yield: Total value: Abitable rooms:
Retail 1514 1287 £ 250 6.00% £ 5,362,083 47Leisure or secondary retail 662 563 £ 180 6.50% £ 1,558,246 20High grade Office/Commercial 4098 3483 £ 600 5.00% £ 41,799,600 127Other commercial use 588 500 £ 450 6.00% £ 3,748,500 18Hotels 0 n/a n/a n/a £ 0 #VALUE!Brandon House redevelopment 4800 4080 £ 425 5.50% £ 31,527,273 148Refurbished buildings 0 0 £ 200 10.00% £ 0 0Total area of retained non-residential bldgs. 25475 21654 n/a n/a £ 141,565,934 787Community facilities (inc sect 106) 4036 0 n/a n/a
New gross commercial floor area 6862
Residential: all dwellings
Flats for sale Total units: Area/unit sales value/unit:Gross area
total: Total value: Abitable rooms:
1-bed flats 84 55 £ 600,000 5435 £ 50,400,000 852-bed flats 182 75 £ 850,000 16059 £ 154,700,000 3653-bed flats 58 100 £ 1,100,000 6835 £ 63,910,000 1754-bed+ flats 6 110 £ 1,200,000 815 £ 7,560,000 26Brandon House redevelopment 1 4284 £ 8,500 5040 £ 36,414,000 100Sub-total 330 34185
Houses for sale Total units: Area/unit sales value/unit:Gross floor area
total: Total value: Abitable rooms:
2-bed 14 80 £ 950,000 1120 £ 13,300,000 293-bed 42 105 £ 1,200,000 4410 £ 50,400,000 127Sub-total 56 5530 Abitable rooms ratio:
Flats for rent (affordable) Total units: Area/unitsales
value/sq.m:Gross floor area
total: Total value: Abitable rooms:Gross floor area
total: Abitable rooms: Ratio:
1-bed flats 36 50 £ 4,250 2118 £ 7,650,000 372-bed flats 84 75 £ 4,250 7412 £ 26,775,000 169 49569 1152 433-bed flats 43 100 £ 4,250 5047 £ 18,232,500 1304-bed flats 3 100 £ 4,700 318 £ 1,269,000 9Brandon House redevelopment 1 1836 £ 4,250 2160 £ 7,803,000 43Existing retained residential total area 1 9155 £ 6,375 10770 £ 58,359,938 213Sub-total 168 19747
Extras units sqmt/unitAdd'l sales value/unit Total value:
Flats for sale with park view 122 £ 25,000 £ 3,050,000
sub-basement parking spaces - total 76 25 1900
sub-basement parking spaces - for sale 66 25 £ 10,000 £ 660,000
Gross floor area total: Total value:
Total abitable rooms:
Total (new dwelling units only) 554 56769 £ 726,045,074 2407 101776
Affordable housing as proportion of total (including retained buildings) 29%
Hotels: Dwelling unit sizes (social housing and typical market units)
bed-spaces all units m2 housesCapital value/room @ 80% occupancy rates £ 200,000 studio 30-50m2 40
Hotel quality (no of stars 2, 3 4 or 5) 4 1-bed 40-60m2 55Gross area of bedroom floors 0 2-bed 60-90m2 80 65-100m2
Gross area of bedroom floors 0 3-bed 80-120m2 90 90-130m2
Average bedroom suite size 20 4-bed 100-150m2 110 110-180m2
No of bedrooms 0
Gross floor area of hotel 0 GDV/sq.m (Gross Development Value for social housing)Ground and upper floor ancillary areas 0 Social rent £ 4,250
Capital value £ 0 Shared ownership £ 4,700
Number of units (total):
Typology:Number of
units:
1B 108key: 2B 194B = bedroom 3B 63H = house 4B 9V = view 2BH 14
3BH 421BV 122BV 723BV 38TOTAL 552
University of Westminster 23/03/2015 Postfraduate Urban Design
PG Urban Design Spreadsheet B:Detailed Development Appraisal
23/03/2015
OPTION1
Non-residential uses
Floorspace by use: Gross: Net:rental value/
sq.m: yield: Total value: Abitable rooms:
Retail 1514 1287 £ 250 6.00% £ 5,362,083 47Leisure or secondary retail 662 563 £ 180 6.50% £ 1,558,246 20High grade Office/Commercial 4098 3483 £ 600 5.00% £ 41,799,600 127Other commercial use 588 500 £ 450 6.00% £ 3,748,500 18Hotels 0 n/a n/a n/a £ 0 #VALUE!Brandon House redevelopment 4800 4080 £ 425 5.50% £ 31,527,273 148Refurbished buildings 0 0 £ 200 10.00% £ 0 0Total area of retained non-residential bldgs. 25475 21654 n/a n/a £ 141,565,934 787Community facilities (inc sect 106) 4036 0 n/a n/a
New gross commercial floor area 6862
Residential: all dwellings
Flats for sale Total units: Area/unit sales value/unit:Gross area
total: Total value: Abitable rooms:
1-bed flats 84 55 £ 600,000 5435 £ 50,400,000 852-bed flats 182 75 £ 850,000 16059 £ 154,700,000 3653-bed flats 58 100 £ 1,100,000 6835 £ 63,910,000 1754-bed+ flats 6 110 £ 1,200,000 815 £ 7,560,000 26Brandon House redevelopment 1 4284 £ 8,500 5040 £ 36,414,000 100Sub-total 330 34185
Houses for sale Total units: Area/unit sales value/unit:Gross floor area
total: Total value: Abitable rooms:
2-bed 14 80 £ 950,000 1120 £ 13,300,000 293-bed 42 105 £ 1,200,000 4410 £ 50,400,000 127Sub-total 56 5530 Abitable rooms ratio:
Flats for rent (affordable) Total units: Area/unitsales
value/sq.m:Gross floor area
total: Total value: Abitable rooms:Gross floor area
total: Abitable rooms: Ratio:
1-bed flats 36 50 £ 4,250 2118 £ 7,650,000 372-bed flats 84 75 £ 4,250 7412 £ 26,775,000 169 49569 1152 433-bed flats 43 100 £ 4,250 5047 £ 18,232,500 1304-bed flats 3 100 £ 4,700 318 £ 1,269,000 9Brandon House redevelopment 1 1836 £ 4,250 2160 £ 7,803,000 43Existing retained residential total area 1 9155 £ 6,375 10770 £ 58,359,938 213Sub-total 168 19747
Extras units sqmt/unitAdd'l sales value/unit Total value:
Flats for sale with park view 122 £ 25,000 £ 3,050,000
sub-basement parking spaces - total 76 25 1900
sub-basement parking spaces - for sale 66 25 £ 10,000 £ 660,000
Gross floor area total: Total value:
Total abitable rooms:
Total (new dwelling units only) 554 56769 £ 726,045,074 2407 101776
Affordable housing as proportion of total (including retained buildings) 29%
Hotels: Dwelling unit sizes (social housing and typical market units)
bed-spaces all units m2 housesCapital value/room @ 80% occupancy rates £ 200,000 studio 30-50m2 40
Hotel quality (no of stars 2, 3 4 or 5) 4 1-bed 40-60m2 55Gross area of bedroom floors 0 2-bed 60-90m2 80 65-100m2
Gross area of bedroom floors 0 3-bed 80-120m2 90 90-130m2
Average bedroom suite size 20 4-bed 100-150m2 110 110-180m2
No of bedrooms 0
Gross floor area of hotel 0 GDV/sq.m (Gross Development Value for social housing)Ground and upper floor ancillary areas 0 Social rent £ 4,250
Capital value £ 0 Shared ownership £ 4,700
Number of units (total):
Typology:Number of
units:
1B 108key: 2B 194B = bedroom 3B 63H = house 4B 9V = view 2BH 14
3BH 421BV 122BV 723BV 38TOTAL 552
University of Westminster 23/03/2015 Postfraduate Urban Design
PG Urban Design Spreadsheet B:Detailed Development Appraisal
23/03/2015
OPTION1
Non-residential uses
Floorspace by use: Gross: Net:rental value/
sq.m: yield: Total value: Abitable rooms:
Retail 1514 1287 £ 250 6.00% £ 5,362,083 47Leisure or secondary retail 662 563 £ 180 6.50% £ 1,558,246 20High grade Office/Commercial 4098 3483 £ 600 5.00% £ 41,799,600 127Other commercial use 588 500 £ 450 6.00% £ 3,748,500 18Hotels 0 n/a n/a n/a £ 0 #VALUE!Brandon House redevelopment 4800 4080 £ 425 5.50% £ 31,527,273 148Refurbished buildings 0 0 £ 200 10.00% £ 0 0Total area of retained non-residential bldgs. 25475 21654 n/a n/a £ 141,565,934 787Community facilities (inc sect 106) 4036 0 n/a n/a
New gross commercial floor area 6862
Residential: all dwellings
Flats for sale Total units: Area/unit sales value/unit:Gross area
total: Total value: Abitable rooms:
1-bed flats 84 55 £ 600,000 5435 £ 50,400,000 852-bed flats 182 75 £ 850,000 16059 £ 154,700,000 3653-bed flats 58 100 £ 1,100,000 6835 £ 63,910,000 1754-bed+ flats 6 110 £ 1,200,000 815 £ 7,560,000 26Brandon House redevelopment 1 4284 £ 8,500 5040 £ 36,414,000 100Sub-total 330 34185
Houses for sale Total units: Area/unit sales value/unit:Gross floor area
total: Total value: Abitable rooms:
2-bed 14 80 £ 950,000 1120 £ 13,300,000 293-bed 42 105 £ 1,200,000 4410 £ 50,400,000 127Sub-total 56 5530 Abitable rooms ratio:
Flats for rent (affordable) Total units: Area/unitsales
value/sq.m:Gross floor area
total: Total value: Abitable rooms:Gross floor area
total: Abitable rooms: Ratio:
1-bed flats 36 50 £ 4,250 2118 £ 7,650,000 372-bed flats 84 75 £ 4,250 7412 £ 26,775,000 169 49569 1152 433-bed flats 43 100 £ 4,250 5047 £ 18,232,500 1304-bed flats 3 100 £ 4,700 318 £ 1,269,000 9Brandon House redevelopment 1 1836 £ 4,250 2160 £ 7,803,000 43Existing retained residential total area 1 9155 £ 6,375 10770 £ 58,359,938 213Sub-total 168 19747
Extras units sqmt/unitAdd'l sales value/unit Total value:
Flats for sale with park view 122 £ 25,000 £ 3,050,000
sub-basement parking spaces - total 76 25 1900
sub-basement parking spaces - for sale 66 25 £ 10,000 £ 660,000
Gross floor area total: Total value:
Total abitable rooms:
Total (new dwelling units only) 554 56769 £ 726,045,074 2407 101776
Affordable housing as proportion of total (including retained buildings) 29%
Hotels: Dwelling unit sizes (social housing and typical market units)
bed-spaces all units m2 housesCapital value/room @ 80% occupancy rates £ 200,000 studio 30-50m2 40
Hotel quality (no of stars 2, 3 4 or 5) 4 1-bed 40-60m2 55Gross area of bedroom floors 0 2-bed 60-90m2 80 65-100m2
Gross area of bedroom floors 0 3-bed 80-120m2 90 90-130m2
Average bedroom suite size 20 4-bed 100-150m2 110 110-180m2
No of bedrooms 0
Gross floor area of hotel 0 GDV/sq.m (Gross Development Value for social housing)Ground and upper floor ancillary areas 0 Social rent £ 4,250
Capital value £ 0 Shared ownership £ 4,700
Number of units (total):
Typology:Number of
units:
1B 108key: 2B 194B = bedroom 3B 63H = house 4B 9V = view 2BH 14
3BH 421BV 122BV 723BV 38TOTAL 552
University of Westminster 23/03/2015 Postfraduate Urban Design
PG Urban Design Spreadsheet B:Detailed Development Appraisal
23/03/2015
OPTION1
Non-residential uses
Floorspace by use: Gross: Net:rental value/
sq.m: yield: Total value: Abitable rooms:
Retail 1514 1287 £ 250 6.00% £ 5,362,083 47Leisure or secondary retail 662 563 £ 180 6.50% £ 1,558,246 20High grade Office/Commercial 4098 3483 £ 600 5.00% £ 41,799,600 127Other commercial use 588 500 £ 450 6.00% £ 3,748,500 18Hotels 0 n/a n/a n/a £ 0 #VALUE!Brandon House redevelopment 4800 4080 £ 425 5.50% £ 31,527,273 148Refurbished buildings 0 0 £ 200 10.00% £ 0 0Total area of retained non-residential bldgs. 25475 21654 n/a n/a £ 141,565,934 787Community facilities (inc sect 106) 4036 0 n/a n/a
New gross commercial floor area 6862
Residential: all dwellings
Flats for sale Total units: Area/unit sales value/unit:Gross area
total: Total value: Abitable rooms:
1-bed flats 84 55 £ 600,000 5435 £ 50,400,000 852-bed flats 182 75 £ 850,000 16059 £ 154,700,000 3653-bed flats 58 100 £ 1,100,000 6835 £ 63,910,000 1754-bed+ flats 6 110 £ 1,200,000 815 £ 7,560,000 26Brandon House redevelopment 1 4284 £ 8,500 5040 £ 36,414,000 100Sub-total 330 34185
Houses for sale Total units: Area/unit sales value/unit:Gross floor area
total: Total value: Abitable rooms:
2-bed 14 80 £ 950,000 1120 £ 13,300,000 293-bed 42 105 £ 1,200,000 4410 £ 50,400,000 127Sub-total 56 5530 Abitable rooms ratio:
Flats for rent (affordable) Total units: Area/unitsales
value/sq.m:Gross floor area
total: Total value: Abitable rooms:Gross floor area
total: Abitable rooms: Ratio:
1-bed flats 36 50 £ 4,250 2118 £ 7,650,000 372-bed flats 84 75 £ 4,250 7412 £ 26,775,000 169 49569 1152 433-bed flats 43 100 £ 4,250 5047 £ 18,232,500 1304-bed flats 3 100 £ 4,700 318 £ 1,269,000 9Brandon House redevelopment 1 1836 £ 4,250 2160 £ 7,803,000 43Existing retained residential total area 1 9155 £ 6,375 10770 £ 58,359,938 213Sub-total 168 19747
Extras units sqmt/unitAdd'l sales value/unit Total value:
Flats for sale with park view 122 £ 25,000 £ 3,050,000
sub-basement parking spaces - total 76 25 1900
sub-basement parking spaces - for sale 66 25 £ 10,000 £ 660,000
Gross floor area total: Total value:
Total abitable rooms:
Total (new dwelling units only) 554 56769 £ 726,045,074 2407 101776
Affordable housing as proportion of total (including retained buildings) 29%
Hotels: Dwelling unit sizes (social housing and typical market units)
bed-spaces all units m2 housesCapital value/room @ 80% occupancy rates £ 200,000 studio 30-50m2 40
Hotel quality (no of stars 2, 3 4 or 5) 4 1-bed 40-60m2 55Gross area of bedroom floors 0 2-bed 60-90m2 80 65-100m2
Gross area of bedroom floors 0 3-bed 80-120m2 90 90-130m2
Average bedroom suite size 20 4-bed 100-150m2 110 110-180m2
No of bedrooms 0
Gross floor area of hotel 0 GDV/sq.m (Gross Development Value for social housing)Ground and upper floor ancillary areas 0 Social rent £ 4,250
Capital value £ 0 Shared ownership £ 4,700
Number of units (total):
Typology:Number of
units:
1B 108key: 2B 194B = bedroom 3B 63H = house 4B 9V = view 2BH 14
3BH 421BV 122BV 723BV 38TOTAL 552
University of Westminster 23/03/2015 Postfraduate Urban Design
PG Urban Design Spreadsheet B:Detailed Development Appraisal
23/03/2015
OPTION1
Non-residential uses
Floorspace by use: Gross: Net:rental value/
sq.m: yield: Total value: Abitable rooms:
Retail 1514 1287 £ 250 6.00% £ 5,362,083 47Leisure or secondary retail 662 563 £ 180 6.50% £ 1,558,246 20High grade Office/Commercial 4098 3483 £ 600 5.00% £ 41,799,600 127Other commercial use 588 500 £ 450 6.00% £ 3,748,500 18Hotels 0 n/a n/a n/a £ 0 #VALUE!Brandon House redevelopment 4800 4080 £ 425 5.50% £ 31,527,273 148Refurbished buildings 0 0 £ 200 10.00% £ 0 0Total area of retained non-residential bldgs. 25475 21654 n/a n/a £ 141,565,934 787Community facilities (inc sect 106) 4036 0 n/a n/a
New gross commercial floor area 6862
Residential: all dwellings
Flats for sale Total units: Area/unit sales value/unit:Gross area
total: Total value: Abitable rooms:
1-bed flats 84 55 £ 600,000 5435 £ 50,400,000 852-bed flats 182 75 £ 850,000 16059 £ 154,700,000 3653-bed flats 58 100 £ 1,100,000 6835 £ 63,910,000 1754-bed+ flats 6 110 £ 1,200,000 815 £ 7,560,000 26Brandon House redevelopment 1 4284 £ 8,500 5040 £ 36,414,000 100Sub-total 330 34185
Houses for sale Total units: Area/unit sales value/unit:Gross floor area
total: Total value: Abitable rooms:
2-bed 14 80 £ 950,000 1120 £ 13,300,000 293-bed 42 105 £ 1,200,000 4410 £ 50,400,000 127Sub-total 56 5530 Abitable rooms ratio:
Flats for rent (affordable) Total units: Area/unitsales
value/sq.m:Gross floor area
total: Total value: Abitable rooms:Gross floor area
total: Abitable rooms: Ratio:
1-bed flats 36 50 £ 4,250 2118 £ 7,650,000 372-bed flats 84 75 £ 4,250 7412 £ 26,775,000 169 49569 1152 433-bed flats 43 100 £ 4,250 5047 £ 18,232,500 1304-bed flats 3 100 £ 4,700 318 £ 1,269,000 9Brandon House redevelopment 1 1836 £ 4,250 2160 £ 7,803,000 43Existing retained residential total area 1 9155 £ 6,375 10770 £ 58,359,938 213Sub-total 168 19747
Extras units sqmt/unitAdd'l sales value/unit Total value:
Flats for sale with park view 122 £ 25,000 £ 3,050,000
sub-basement parking spaces - total 76 25 1900
sub-basement parking spaces - for sale 66 25 £ 10,000 £ 660,000
Gross floor area total: Total value:
Total abitable rooms:
Total (new dwelling units only) 554 56769 £ 726,045,074 2407 101776
Affordable housing as proportion of total (including retained buildings) 29%
Hotels: Dwelling unit sizes (social housing and typical market units)
bed-spaces all units m2 housesCapital value/room @ 80% occupancy rates £ 200,000 studio 30-50m2 40
Hotel quality (no of stars 2, 3 4 or 5) 4 1-bed 40-60m2 55Gross area of bedroom floors 0 2-bed 60-90m2 80 65-100m2
Gross area of bedroom floors 0 3-bed 80-120m2 90 90-130m2
Average bedroom suite size 20 4-bed 100-150m2 110 110-180m2
No of bedrooms 0
Gross floor area of hotel 0 GDV/sq.m (Gross Development Value for social housing)Ground and upper floor ancillary areas 0 Social rent £ 4,250
Capital value £ 0 Shared ownership £ 4,700
Number of units (total):
Typology:Number of
units:
1B 108key: 2B 194B = bedroom 3B 63H = house 4B 9V = view 2BH 14
3BH 421BV 122BV 723BV 38TOTAL 552
University of Westminster 23/03/2015 Postfraduate Urban Design
PG Urban Design Spreadsheet B:Detailed Development Appraisal
23/03/2015
OPTION1
Non-residential uses
Floorspace by use: Gross: Net:rental value/
sq.m: yield: Total value: Abitable rooms:
Retail 1514 1287 £ 250 6.00% £ 5,362,083 47Leisure or secondary retail 662 563 £ 180 6.50% £ 1,558,246 20High grade Office/Commercial 4098 3483 £ 600 5.00% £ 41,799,600 127Other commercial use 588 500 £ 450 6.00% £ 3,748,500 18Hotels 0 n/a n/a n/a £ 0 #VALUE!Brandon House redevelopment 4800 4080 £ 425 5.50% £ 31,527,273 148Refurbished buildings 0 0 £ 200 10.00% £ 0 0Total area of retained non-residential bldgs. 25475 21654 n/a n/a £ 141,565,934 787Community facilities (inc sect 106) 4036 0 n/a n/a
New gross commercial floor area 6862
Residential: all dwellings
Flats for sale Total units: Area/unit sales value/unit:Gross area
total: Total value: Abitable rooms:
1-bed flats 84 55 £ 600,000 5435 £ 50,400,000 852-bed flats 182 75 £ 850,000 16059 £ 154,700,000 3653-bed flats 58 100 £ 1,100,000 6835 £ 63,910,000 1754-bed+ flats 6 110 £ 1,200,000 815 £ 7,560,000 26Brandon House redevelopment 1 4284 £ 8,500 5040 £ 36,414,000 100Sub-total 330 34185
Houses for sale Total units: Area/unit sales value/unit:Gross floor area
total: Total value: Abitable rooms:
2-bed 14 80 £ 950,000 1120 £ 13,300,000 293-bed 42 105 £ 1,200,000 4410 £ 50,400,000 127Sub-total 56 5530 Abitable rooms ratio:
Flats for rent (affordable) Total units: Area/unitsales
value/sq.m:Gross floor area
total: Total value: Abitable rooms:Gross floor area
total: Abitable rooms: Ratio:
1-bed flats 36 50 £ 4,250 2118 £ 7,650,000 372-bed flats 84 75 £ 4,250 7412 £ 26,775,000 169 49569 1152 433-bed flats 43 100 £ 4,250 5047 £ 18,232,500 1304-bed flats 3 100 £ 4,700 318 £ 1,269,000 9Brandon House redevelopment 1 1836 £ 4,250 2160 £ 7,803,000 43Existing retained residential total area 1 9155 £ 6,375 10770 £ 58,359,938 213Sub-total 168 19747
Extras units sqmt/unitAdd'l sales value/unit Total value:
Flats for sale with park view 122 £ 25,000 £ 3,050,000
sub-basement parking spaces - total 76 25 1900
sub-basement parking spaces - for sale 66 25 £ 10,000 £ 660,000
Gross floor area total: Total value:
Total abitable rooms:
Total (new dwelling units only) 554 56769 £ 726,045,074 2407 101776
Affordable housing as proportion of total (including retained buildings) 29%
Hotels: Dwelling unit sizes (social housing and typical market units)
bed-spaces all units m2 housesCapital value/room @ 80% occupancy rates £ 200,000 studio 30-50m2 40
Hotel quality (no of stars 2, 3 4 or 5) 4 1-bed 40-60m2 55Gross area of bedroom floors 0 2-bed 60-90m2 80 65-100m2
Gross area of bedroom floors 0 3-bed 80-120m2 90 90-130m2
Average bedroom suite size 20 4-bed 100-150m2 110 110-180m2
No of bedrooms 0
Gross floor area of hotel 0 GDV/sq.m (Gross Development Value for social housing)Ground and upper floor ancillary areas 0 Social rent £ 4,250
Capital value £ 0 Shared ownership £ 4,700
Number of units (total):
Typology:Number of
units:
1B 108key: 2B 194B = bedroom 3B 63H = house 4B 9V = view 2BH 14
3BH 421BV 122BV 723BV 38TOTAL 552
University of Westminster 23/03/2015 Postfraduate Urban Design
PG Urban Design Spreadsheet B:Detailed Development Appraisal
23/03/2015
OPTION1
Non-residential uses
Floorspace by use: Gross: Net:rental value/
sq.m: yield: Total value: Abitable rooms:
Retail 1514 1287 £ 250 6.00% £ 5,362,083 47Leisure or secondary retail 662 563 £ 180 6.50% £ 1,558,246 20High grade Office/Commercial 4098 3483 £ 600 5.00% £ 41,799,600 127Other commercial use 588 500 £ 450 6.00% £ 3,748,500 18Hotels 0 n/a n/a n/a £ 0 #VALUE!Brandon House redevelopment 4800 4080 £ 425 5.50% £ 31,527,273 148Refurbished buildings 0 0 £ 200 10.00% £ 0 0Total area of retained non-residential bldgs. 25475 21654 n/a n/a £ 141,565,934 787Community facilities (inc sect 106) 4036 0 n/a n/a
New gross commercial floor area 6862
Residential: all dwellings
Flats for sale Total units: Area/unit sales value/unit:Gross area
total: Total value: Abitable rooms:
1-bed flats 84 55 £ 600,000 5435 £ 50,400,000 852-bed flats 182 75 £ 850,000 16059 £ 154,700,000 3653-bed flats 58 100 £ 1,100,000 6835 £ 63,910,000 1754-bed+ flats 6 110 £ 1,200,000 815 £ 7,560,000 26Brandon House redevelopment 1 4284 £ 8,500 5040 £ 36,414,000 100Sub-total 330 34185
Houses for sale Total units: Area/unit sales value/unit:Gross floor area
total: Total value: Abitable rooms:
2-bed 14 80 £ 950,000 1120 £ 13,300,000 293-bed 42 105 £ 1,200,000 4410 £ 50,400,000 127Sub-total 56 5530 Abitable rooms ratio:
Flats for rent (affordable) Total units: Area/unitsales
value/sq.m:Gross floor area
total: Total value: Abitable rooms:Gross floor area
total: Abitable rooms: Ratio:
1-bed flats 36 50 £ 4,250 2118 £ 7,650,000 372-bed flats 84 75 £ 4,250 7412 £ 26,775,000 169 49569 1152 433-bed flats 43 100 £ 4,250 5047 £ 18,232,500 1304-bed flats 3 100 £ 4,700 318 £ 1,269,000 9Brandon House redevelopment 1 1836 £ 4,250 2160 £ 7,803,000 43Existing retained residential total area 1 9155 £ 6,375 10770 £ 58,359,938 213Sub-total 168 19747
Extras units sqmt/unitAdd'l sales value/unit Total value:
Flats for sale with park view 122 £ 25,000 £ 3,050,000
sub-basement parking spaces - total 76 25 1900
sub-basement parking spaces - for sale 66 25 £ 10,000 £ 660,000
Gross floor area total: Total value:
Total abitable rooms:
Total (new dwelling units only) 554 56769 £ 726,045,074 2407 101776
Affordable housing as proportion of total (including retained buildings) 29%
Hotels: Dwelling unit sizes (social housing and typical market units)
bed-spaces all units m2 housesCapital value/room @ 80% occupancy rates £ 200,000 studio 30-50m2 40
Hotel quality (no of stars 2, 3 4 or 5) 4 1-bed 40-60m2 55Gross area of bedroom floors 0 2-bed 60-90m2 80 65-100m2
Gross area of bedroom floors 0 3-bed 80-120m2 90 90-130m2
Average bedroom suite size 20 4-bed 100-150m2 110 110-180m2
No of bedrooms 0
Gross floor area of hotel 0 GDV/sq.m (Gross Development Value for social housing)Ground and upper floor ancillary areas 0 Social rent £ 4,250
Capital value £ 0 Shared ownership £ 4,700
Number of units (total):
Typology:Number of
units:
1B 108key: 2B 194B = bedroom 3B 63H = house 4B 9V = view 2BH 14
3BH 421BV 122BV 723BV 38TOTAL 552
University of Westminster 23/03/2015 Postfraduate Urban Design
PG Urban Design Spreadsheet B:Detailed Development Appraisal
23/03/2015
OPTION1
Non-residential uses
Floorspace by use: Gross: Net:rental value/
sq.m: yield: Total value: Abitable rooms:
Retail 1514 1287 £ 250 6.00% £ 5,362,083 47Leisure or secondary retail 662 563 £ 180 6.50% £ 1,558,246 20High grade Office/Commercial 4098 3483 £ 600 5.00% £ 41,799,600 127Other commercial use 588 500 £ 450 6.00% £ 3,748,500 18Hotels 0 n/a n/a n/a £ 0 #VALUE!Brandon House redevelopment 4800 4080 £ 425 5.50% £ 31,527,273 148Refurbished buildings 0 0 £ 200 10.00% £ 0 0Total area of retained non-residential bldgs. 25475 21654 n/a n/a £ 141,565,934 787Community facilities (inc sect 106) 4036 0 n/a n/a
New gross commercial floor area 6862
Residential: all dwellings
Flats for sale Total units: Area/unit sales value/unit:Gross area
total: Total value: Abitable rooms:
1-bed flats 84 55 £ 600,000 5435 £ 50,400,000 852-bed flats 182 75 £ 850,000 16059 £ 154,700,000 3653-bed flats 58 100 £ 1,100,000 6835 £ 63,910,000 1754-bed+ flats 6 110 £ 1,200,000 815 £ 7,560,000 26Brandon House redevelopment 1 4284 £ 8,500 5040 £ 36,414,000 100Sub-total 330 34185
Houses for sale Total units: Area/unit sales value/unit:Gross floor area
total: Total value: Abitable rooms:
2-bed 14 80 £ 950,000 1120 £ 13,300,000 293-bed 42 105 £ 1,200,000 4410 £ 50,400,000 127Sub-total 56 5530 Abitable rooms ratio:
Flats for rent (affordable) Total units: Area/unitsales
value/sq.m:Gross floor area
total: Total value: Abitable rooms:Gross floor area
total: Abitable rooms: Ratio:
1-bed flats 36 50 £ 4,250 2118 £ 7,650,000 372-bed flats 84 75 £ 4,250 7412 £ 26,775,000 169 49569 1152 433-bed flats 43 100 £ 4,250 5047 £ 18,232,500 1304-bed flats 3 100 £ 4,700 318 £ 1,269,000 9Brandon House redevelopment 1 1836 £ 4,250 2160 £ 7,803,000 43Existing retained residential total area 1 9155 £ 6,375 10770 £ 58,359,938 213Sub-total 168 19747
Extras units sqmt/unitAdd'l sales value/unit Total value:
Flats for sale with park view 122 £ 25,000 £ 3,050,000
sub-basement parking spaces - total 76 25 1900
sub-basement parking spaces - for sale 66 25 £ 10,000 £ 660,000
Gross floor area total: Total value:
Total abitable rooms:
Total (new dwelling units only) 554 56769 £ 726,045,074 2407 101776
Affordable housing as proportion of total (including retained buildings) 29%
Hotels: Dwelling unit sizes (social housing and typical market units)
bed-spaces all units m2 housesCapital value/room @ 80% occupancy rates £ 200,000 studio 30-50m2 40
Hotel quality (no of stars 2, 3 4 or 5) 4 1-bed 40-60m2 55Gross area of bedroom floors 0 2-bed 60-90m2 80 65-100m2
Gross area of bedroom floors 0 3-bed 80-120m2 90 90-130m2
Average bedroom suite size 20 4-bed 100-150m2 110 110-180m2
No of bedrooms 0
Gross floor area of hotel 0 GDV/sq.m (Gross Development Value for social housing)Ground and upper floor ancillary areas 0 Social rent £ 4,250
Capital value £ 0 Shared ownership £ 4,700
Number of units (total):
Typology:Number of
units:
1B 108key: 2B 194B = bedroom 3B 63H = house 4B 9V = view 2BH 14
3BH 421BV 122BV 723BV 38TOTAL 552
University of Westminster 23/03/2015 Postfraduate Urban Design
note 2
The abitable rooms ratio was used to calculate the amount of abitable rooms for the retained residential area.
note 1
The total amount of new units is listed separately in this database, that is used in the main spreadsheet to generate automatically the number of afforda-ble and for sale units, according to the rate of the rate of affordable housing given as an input. This allows a quick-er and more flexible way to evaluate different options.
1 2
FINANCIAL APPRAISAL: SITE1page 33
PG Urban Design Spreadsheet B:Detailed Development Appraisal
Floorspace/units building costs
Gross floorspace by use.: sq.m building cost/sq.m Total building cost
Retail 1514 £ 800 £ 1,211,200
Leisure or secondary retail 662 £ 1,000 £ 662,000
High grade Office/Commercial 8898 £ 1,900 £ 16,906,200
Other commercial use 588 £ 1,450 £ 852,600
Existing non-res buidings retained 25475
Hotels 0 £ 2,000 £ 0
Refurb buildings 0 £ 500 £ 0
Residential for sale: flats 34185 £ 1,800 £ 61,532,471
Residential for sale: houses 5530 £ 1,600 £ 8,848,000
High rise residential: extra cost* 10027 £ 450 £ 4,512,150
Affordable housing: flats 17054 £ 1,500 £ 25,581,176
Existing Residential 10770
Community Facilities 4036 £ 1,500 £ 6,054,000Underground/garage parking 1900 £ 750 £ 1,425,000
Total building area and cost 110612 £ 127,584,797*not to be included in the total area
CIL sq.m CIL/sq.m Total CIL
OFFICE 9486 £0 £0
HOTEL 0 £125 £0
RESIDENTIAL 77566 £200 £15,513,165
ALL OTHER RETAIL 2176 £125 £272,000
ALL OTHER USES 25475 £30 £764,250
Total building area and cost 114703 £ 16,549,415
CIL
A new spreadshit was introduced, pro-viding automatically the CIL calcula-tion for the site.
Residual site value calculationTotal value of development £ 726,045,074
Building costs £ 127,584,797
Infratructure costs and basic landscaping @ 10% £ 12,758,480Basic landscaping costs @ 5% £ 6,379,240Additional site treatement 5% £ 6,379,240
Total construction cost £ 153,101,756
Additional costs £ 0
Professional fees @ 12.5% £ 19,137,720
Contingencies @ 5% £ 7,655,088
Sub total £ 179,894,564
Short-term finance @ 8% p.a. £ 14,391,565
(Assumes 2-year development programme)
Sub-total £ 194,286,129
Developer's profit 20% £ 38,857,226
(Level of profit depends on perceived risk)
Sub-total £ 233,143,355
CIL at £35 psm £ 240,170
Agents and selling fees @ 3% £ 6,994,301
Total development cost £ 240,377,825
Southwark CIL £ 16,549,415Residual value £ 469,117,834
Site Area (HA) 5.2
Net Site Area (HA) 4.6Value/Ha £ 90,214,968Plot ratio 2.40Residential density (habitable rooms/ha) 463Affordable housing as proportion of total new development 30%
FINANCIAL APPRAISAL: SITE1page 34
Residual site value calculationTotal value of development £ 726,045,074
Building costs £ 127,584,797
Infratructure costs and basic landscaping @ 10% £ 12,758,480Basic landscaping costs @ 5% £ 6,379,240Additional site treatement 5% £ 6,379,240
Total construction cost £ 153,101,756
Additional costs £ 0
Professional fees @ 12.5% £ 19,137,720
Contingencies @ 5% £ 7,655,088
Sub total £ 179,894,564
Short-term finance @ 8% p.a. £ 14,391,565
(Assumes 2-year development programme)
Sub-total £ 194,286,129
Developer's profit 20% £ 38,857,226
(Level of profit depends on perceived risk)
Sub-total £ 233,143,355
CIL at £35 psm £ 240,170
Agents and selling fees @ 3% £ 6,994,301
Total development cost £ 240,377,825
Southwark CIL £ 16,549,415Residual value £ 469,117,834
Site Area (HA) 5.2
Net Site Area (HA) 4.6Value/Ha £ 90,214,968Plot ratio 2.40Residential density (habitable rooms/ha) 463Affordable housing as proportion of total new development 30%
FINANCIAL APPRAISAL: SITE1page 35
Residual site value calculationTotal value of development £ 726,045,074
Building costs £ 127,584,797
Infratructure costs and basic landscaping @ 10% £ 12,758,480Basic landscaping costs @ 5% £ 6,379,240Additional site treatement 5% £ 6,379,240
Total construction cost £ 153,101,756
Additional costs £ 0
Professional fees @ 12.5% £ 19,137,720
Contingencies @ 5% £ 7,655,088
Sub total £ 179,894,564
Short-term finance @ 8% p.a. £ 14,391,565
(Assumes 2-year development programme)
Sub-total £ 194,286,129
Developer's profit 20% £ 38,857,226
(Level of profit depends on perceived risk)
Sub-total £ 233,143,355
CIL at £35 psm £ 240,170
Agents and selling fees @ 3% £ 6,994,301
Total development cost £ 240,377,825
Southwark CIL £ 16,549,415Residual value £ 469,117,834
Site Area (HA) 5.2
Net Site Area (HA) 4.6Value/Ha £ 90,214,968Plot ratio 2.40Residential density (habitable rooms/ha) 463Affordable housing as proportion of total new development 30%
Residual site value calculationTotal value of development £ 726,045,074
Building costs £ 127,584,797
Infratructure costs and basic landscaping @ 10% £ 12,758,480Basic landscaping costs @ 5% £ 6,379,240Additional site treatement 5% £ 6,379,240
Total construction cost £ 153,101,756
Additional costs £ 0
Professional fees @ 12.5% £ 19,137,720
Contingencies @ 5% £ 7,655,088
Sub total £ 179,894,564
Short-term finance @ 8% p.a. £ 14,391,565
(Assumes 2-year development programme)
Sub-total £ 194,286,129
Developer's profit 20% £ 38,857,226
(Level of profit depends on perceived risk)
Sub-total £ 233,143,355
CIL at £35 psm £ 240,170
Agents and selling fees @ 3% £ 6,994,301
Total development cost £ 240,377,825
Southwark CIL £ 16,549,415Residual value £ 469,117,834
Site Area (HA) 5.2
Net Site Area (HA) 4.6Value/Ha £ 90,214,968Plot ratio 2.40Residential density (habitable rooms/ha) 463Affordable housing as proportion of total new development 30%
Residual site value calculationTotal value of development £ 726,045,074
Building costs £ 127,584,797
Infratructure costs and basic landscaping @ 10% £ 12,758,480Basic landscaping costs @ 5% £ 6,379,240Additional site treatement 5% £ 6,379,240
Total construction cost £ 153,101,756
Additional costs £ 0
Professional fees @ 12.5% £ 19,137,720
Contingencies @ 5% £ 7,655,088
Sub total £ 179,894,564
Short-term finance @ 8% p.a. £ 14,391,565
(Assumes 2-year development programme)
Sub-total £ 194,286,129
Developer's profit 20% £ 38,857,226
(Level of profit depends on perceived risk)
Sub-total £ 233,143,355
CIL at £35 psm £ 240,170
Agents and selling fees @ 3% £ 6,994,301
Total development cost £ 240,377,825
Southwark CIL £ 16,549,415Residual value £ 469,117,834
Site Area (HA) 5.2
Net Site Area (HA) 4.6Value/Ha £ 90,214,968Plot ratio 2.40Residential density (habitable rooms/ha) 463Affordable housing as proportion of total new development 30%
Residual site value calculationTotal value of development £ 726,045,074
Building costs £ 127,584,797
Infratructure costs and basic landscaping @ 10% £ 12,758,480Basic landscaping costs @ 5% £ 6,379,240Additional site treatement 5% £ 6,379,240
Total construction cost £ 153,101,756
Additional costs £ 0
Professional fees @ 12.5% £ 19,137,720
Contingencies @ 5% £ 7,655,088
Sub total £ 179,894,564
Short-term finance @ 8% p.a. £ 14,391,565
(Assumes 2-year development programme)
Sub-total £ 194,286,129
Developer's profit 20% £ 38,857,226
(Level of profit depends on perceived risk)
Sub-total £ 233,143,355
CIL at £35 psm £ 240,170
Agents and selling fees @ 3% £ 6,994,301
Total development cost £ 240,377,825
Southwark CIL £ 16,549,415Residual value £ 469,117,834
Site Area (HA) 5.2
Net Site Area (HA) 4.6Value/Ha £ 90,214,968Plot ratio 2.40Residential density (habitable rooms/ha) 463Affordable housing as proportion of total new development 30%
Residual site value calculationTotal value of development £ 726,045,074
Building costs £ 127,584,797
Infratructure costs and basic landscaping @ 10% £ 12,758,480Basic landscaping costs @ 5% £ 6,379,240Additional site treatement 5% £ 6,379,240
Total construction cost £ 153,101,756
Additional costs £ 0
Professional fees @ 12.5% £ 19,137,720
Contingencies @ 5% £ 7,655,088
Sub total £ 179,894,564
Short-term finance @ 8% p.a. £ 14,391,565
(Assumes 2-year development programme)
Sub-total £ 194,286,129
Developer's profit 20% £ 38,857,226
(Level of profit depends on perceived risk)
Sub-total £ 233,143,355
CIL at £35 psm £ 240,170
Agents and selling fees @ 3% £ 6,994,301
Total development cost £ 240,377,825
Southwark CIL £ 16,549,415Residual value £ 469,117,834
Site Area (HA) 5.2
Net Site Area (HA) 4.6Value/Ha £ 90,214,968Plot ratio 2.40Residential density (habitable rooms/ha) 463Affordable housing as proportion of total new development 30%
Residual site value calculationTotal value of development £ 726,045,074
Building costs £ 127,584,797
Infratructure costs and basic landscaping @ 10% £ 12,758,480Basic landscaping costs @ 5% £ 6,379,240Additional site treatement 5% £ 6,379,240
Total construction cost £ 153,101,756
Additional costs £ 0
Professional fees @ 12.5% £ 19,137,720
Contingencies @ 5% £ 7,655,088
Sub total £ 179,894,564
Short-term finance @ 8% p.a. £ 14,391,565
(Assumes 2-year development programme)
Sub-total £ 194,286,129
Developer's profit 20% £ 38,857,226
(Level of profit depends on perceived risk)
Sub-total £ 233,143,355
CIL at £35 psm £ 240,170
Agents and selling fees @ 3% £ 6,994,301
Total development cost £ 240,377,825
Southwark CIL £ 16,549,415Residual value £ 469,117,834
Site Area (HA) 5.2
Net Site Area (HA) 4.6Value/Ha £ 90,214,968Plot ratio 2.40Residential density (habitable rooms/ha) 463Affordable housing as proportion of total new development 30%
Residual site value calculationTotal value of development £ 450,374,929
Building costs £ 106,152,797
Infratructure costs and basic landscaping @ 10% £ 10,615,280Basic landscaping costs @ 5% £ 5,307,640Additional site treatement 5% £ 5,307,640
Total construction cost £ 127,383,356
Additional costs £ 0
Professional fees @ 12.5% £ 15,922,920
Contingencies @ 5% £ 6,369,168
Sub total £ 149,675,444
Short-term finance @ 8% p.a. £ 11,974,036
(Assumes 2-year development programme)
Sub-total £ 161,649,479
Developer's profit 20% £ 32,329,896
(Level of profit depends on perceived risk)
Sub-total £ 193,979,375
CIL at £35 psm £ 240,170
Agents and selling fees @ 3% £ 5,819,381
Total development cost £ 200,038,926
Southwark CIL £ 12,191,165Residual value £ 238,144,838
Site Area (HA) 2.5
Net Site Area (HA) 2.5Value/Ha £ 95,257,935Plot ratio 2.49Residential density (habitable rooms/ha) 546Affordable housing as proportion of total new development 30%
Residual site value calculationTotal value of development £ 450,374,929
Building costs £ 106,152,797
Infratructure costs and basic landscaping @ 10% £ 10,615,280Basic landscaping costs @ 5% £ 5,307,640Additional site treatement 5% £ 5,307,640
Total construction cost £ 127,383,356
Additional costs £ 0
Professional fees @ 12.5% £ 15,922,920
Contingencies @ 5% £ 6,369,168
Sub total £ 149,675,444
Short-term finance @ 8% p.a. £ 11,974,036
(Assumes 2-year development programme)
Sub-total £ 161,649,479
Developer's profit 20% £ 32,329,896
(Level of profit depends on perceived risk)
Sub-total £ 193,979,375
CIL at £35 psm £ 240,170
Agents and selling fees @ 3% £ 5,819,381
Total development cost £ 200,038,926
Southwark CIL £ 12,191,165Residual value £ 238,144,838
Site Area (HA) 2.5
Net Site Area (HA) 2.5Value/Ha £ 95,257,935Plot ratio 2.49Residential density (habitable rooms/ha) 546Affordable housing as proportion of total new development 30%
Net site to Gross site
Different evaluation were made com-paring the overall site (including the retained buildings) and only the area directly interested by the redevelop-ment.
REDEVELOPED SITE (ONLY NEW DEVELOPMENT) - 2.5 HA
ENTIRE SITE (INCLUDING RETAINED BUILDINGS) - 5.2 HA
FINANCIAL APPRAISAL: SITE2page 36
PG Urban Design Spreadsheet B:Detailed Development Appraisal
23/03/2015
OPTION1
Non-residential uses
Floorspace by use: Gross: Net:rental value/
sq.m: yield: Total value: Abitable rooms:
Retail 1084 921 £ 250 6.00% £ 3,839,167 34Leisure or secondary retail 223 190 £ 180 6.50% £ 524,908 7High grade Office/Commercial 9024 7670 £ 600 5.00% £ 92,044,800 279Other commercial use 0 0 £ 450 6.00% £ 0 0Hotels 5957 n/a n/a n/a £ 20,000,000 217Brandon House redevelopment 0 0 £ 425 5.50% £ 0 0Refurbished buildings 0 0 £ 200 10.00% £ 0 0Total area of retained non-residential bldgs. 1360 1156 n/a n/a £ 8,613,333 42Community facilities (inc sect 106) 288 0 n/a n/a
New gross commercial floor area 16288
Residential: all dwellings
Flats for sale Total units: Area/unit sales value/unit:Gross area
total: Total value: Abitable rooms:
1-bed flats 36 55 £ 600,000 2310 £ 21,420,000 372-bed flats 20 75 £ 850,000 1729 £ 16,660,000 403-bed flats 13 100 £ 1,100,000 1482 £ 13,860,000 394-bed+ flats 0 110 £ 1,200,000 0 £ 0 1Brandon House redevelopment 0 0 £ 8,500 0 £ 0 0Sub-total 68 5522
Houses for sale Total units: Area/unit sales value/unit:Gross floor area
total: Total value: Abitable rooms:
2-bed 0 80 £ 950,000 0 £ 0 13-bed 0 105 £ 1,200,000 0 £ 0 1Sub-total 0 0 Abitable rooms ratio:
Flats for rent (affordable) Total units: Area/unitsales
value/sq.m:Gross floor area
total: Total value: Abitable rooms:Gross floor area
total: Abitable rooms: Ratio:
1-bed flats 15 50 £ 4,250 900 £ 3,251,250 162-bed flats 8 75 £ 4,250 741 £ 2,677,500 18 7798 171 463-bed flats 5 100 £ 4,250 635 £ 2,295,000 174-bed flats 0 100 £ 4,700 0 £ 0 1Brandon House redevelopment 0 0 £ 4,250 0 £ 0 0Existing retained residential total area 0 0 £ 6,375 0 £ 0 0Sub-total 29 2276
Extras units sqmt/unitAdd'l sales value/unit Total value:
Flats for sale with park view 97 £ 25,000 £ 2,425,000
sub-basement parking spaces - total 0 25 0
sub-basement parking spaces - for sale 0 25 £ 10,000 £ 0
Gross floor area total: Total value:
Total abitable rooms:
Total (new dwelling units only) 97 7798 £ 187,610,957 532 25446
Affordable housing as proportion of total (including retained buildings) 29%
Hotels: Dwelling unit sizes (social housing and typical market units)
bed-spaces all units m2 housesCapital value/room @ 80% occupancy rates £ 200,000 studio 30-50m2 40
Hotel quality (no of stars 2, 3 4 or 5) 4 1-bed 40-60m2 55Gross area of bedroom floors 0 2-bed 60-90m2 80 65-100m2
Gross area of bedroom floors 0 3-bed 80-120m2 90 90-130m2
Average bedroom suite size 20 4-bed 100-150m2 110 110-180m2
No of bedrooms 100
Gross floor area of hotel 5957 GDV/sq.m (Gross Development Value for social housing)Ground and upper floor ancillary areas 0 Social rent £ 4,250
Capital value £ 20,000,000 Shared ownership £ 4,700
Number of units (total):
Typology:Number of
units:
1B 0key: 2B 0B = bedroom 3B 0H = house 4B 0V = view 2BH 0
3BH 01BV 512BV 283BV 18TOTAL 97
University of Westminster 23/03/2015 Postfraduate Urban Design
FINANCIAL APPRAISAL: SITE2page 37
PG Urban Design Spreadsheet B:Detailed Development Appraisal
Floorspace/units building costs
Gross floorspace by use.: sq.m building cost/sq.m Total building cost
Retail 1084 £ 800 £ 867,200
Leisure or secondary retail 223 £ 1,000 £ 223,000
High grade Office/Commercial 9024 £ 1,900 £ 17,145,600
Other commercial use 0 £ 1,450 £ 0
Existing non-res buidings retained 1360
Hotels 5957 £ 2,000 £ 11,914,000
Refurb buildings 0 £ 500 £ 0
Residential for sale: flats 5522 £ 1,800 £ 9,939,176
Residential for sale: houses 0 £ 1,600 £ 0
High rise residential: extra cost* 5522 £ 450 £ 2,484,794
Affordable housing: flats 2276 £ 1,500 £ 3,414,706
Existing Residential 0
Community Facilities 288 £ 1,500 £ 432,000Underground/garage parking 0 £ 750 £ 0
Total building area and cost 25734 £ 46,420,476*not to be included in the total area
CIL sq.m CIL/sq.m Total CIL
OFFICE 9024 £70 £631,680
HOTEL 5957 £250 £1,489,250
RESIDENTIAL 13320 £400 £5,328,000
ALL OTHER RETAIL 1307 £125 £163,375
ALL OTHER USES 1360 £30 £40,800
Total building area and cost 30968 £ 7,653,105
Residual site value calculationTotal value of development £ 726,045,074
Building costs £ 127,584,797
Infratructure costs and basic landscaping @ 10% £ 12,758,480Basic landscaping costs @ 5% £ 6,379,240Additional site treatement 5% £ 6,379,240
Total construction cost £ 153,101,756
Additional costs £ 0
Professional fees @ 12.5% £ 19,137,720
Contingencies @ 5% £ 7,655,088
Sub total £ 179,894,564
Short-term finance @ 8% p.a. £ 14,391,565
(Assumes 2-year development programme)
Sub-total £ 194,286,129
Developer's profit 20% £ 38,857,226
(Level of profit depends on perceived risk)
Sub-total £ 233,143,355
CIL at £35 psm £ 240,170
Agents and selling fees @ 3% £ 6,994,301
Total development cost £ 240,377,825
Southwark CIL £ 16,549,415Residual value £ 469,117,834
Site Area (HA) 5.2
Net Site Area (HA) 4.6Value/Ha £ 90,214,968Plot ratio 2.40Residential density (habitable rooms/ha) 463Affordable housing as proportion of total new development 30%
FINANCIAL APPRAISAL: SITE2page 38
Residual site value calculationTotal value of development £ 187,610,957
Building costs £ 46,420,476
Infratructure costs and basic landscaping @ 10% £ 4,642,048Basic landscaping costs @ 5% £ 2,321,024Additional site treatement 5% £ 2,321,024
Total construction cost £ 55,704,572
Additional costs £ 0
Professional fees @ 12.5% £ 6,963,071
Contingencies @ 5% £ 2,785,229
Sub total £ 65,452,872
Short-term finance @ 8% p.a. £ 5,236,230
(Assumes 2-year development programme)
Sub-total £ 70,689,102
Developer's profit 20% £ 14,137,820
(Level of profit depends on perceived risk)
Sub-total £ 84,826,922
CIL at £35 psm £ 570,080
Agents and selling fees @ 3% £ 2,544,808
Total development cost £ 87,941,810
Southwark CIL £ 7,653,105Residual value £ 92,016,043
Site Area (HA) 0.97
Net Site Area (HA) 0.97Value/Ha £ 94,861,900Plot ratio 2.65Residential density (habitable rooms/ha) 549Affordable housing as proportion of total new development 30%
SUMMARY OPTION1 OPTION2 OPTION3
Total value of development £ 913,656,031 £ 805,381,264 £ 749,414,836
Total development cost £ 328,319,635 £ 272,127,287 £ 238,345,707
Residual value £ 561,133,876 £ 509,051,457 £ 486,866,609
Site Area Ha 6.17 6.17 6.17Net Site Area (HA) 5.57 5.57 5.57Value/Ha £ 90,945,523 £ 82,504,288 £ 78,908,689Plot ratio 2.45 2.20 2.08Residential density (habitable rooms/ha) 476 430 404
Affordable housing / New development 30% 30% 30%Affordable housing as proportion of total 29% 29% 37%
Developer's profit £ 52,995,046 £ 43,888,699 £ 38,425,041
SUMMARY SITE1 SITE2 TOTALTotal value of development £ 726,045,074 £ 187,610,957 £ 913,656,031
Total development cost £ 240,377,825 £ 87,941,810 £ 328,319,635Southwark CIL £ 16,549,415 £ 7,653,105 £ 24,202,520Residual value £ 469,117,834 £ 92,016,043 £ 561,133,876
Site Area Ha 5.2 0.97 6.17Net Site Area (HA) 4.6 0.97 5.57Value/Ha £ 90,214,968 £ 94,861,900 £ 90,945,523Plot ratio 2.40 2.65 2.45Residential density (habitable rooms/ha) 463 549 476
FINANCIAL APPRAISAL: SITE1 + SITE2page 39
SUMMARY OPTION1 OPTION2 OPTION3
Total value of development £ 913,656,031 £ 805,381,264 £ 749,414,836
Total development cost £ 328,319,635 £ 272,127,287 £ 238,345,707
Residual value £ 561,133,876 £ 509,051,457 £ 486,866,609
Site Area Ha 6.17 6.17 6.17Net Site Area (HA) 5.57 5.57 5.57Value/Ha £ 90,945,523 £ 82,504,288 £ 78,908,689Plot ratio 2.45 2.20 2.08Residential density (habitable rooms/ha) 476 430 404
Affordable housing / New development 30% 30% 30%Affordable housing as proportion of total 29% 29% 37%
Developer's profit £ 52,995,046 £ 43,888,699 £ 38,425,041
SUMMARY SITE1 SITE2 TOTALTotal value of development £ 726,045,074 £ 187,610,957 £ 913,656,031
Total development cost £ 240,377,825 £ 87,941,810 £ 328,319,635Southwark CIL £ 16,549,415 £ 7,653,105 £ 24,202,520Residual value £ 469,117,834 £ 92,016,043 £ 561,133,876
Site Area Ha 5.2 0.97 6.17Net Site Area (HA) 4.6 0.97 5.57Value/Ha £ 90,214,968 £ 94,861,900 £ 90,945,523Plot ratio 2.40 2.65 2.45Residential density (habitable rooms/ha) 463 549 476
Different options
The different development options proposed were evaluated form a fi-nancial perspective.
FINANCIAL APPRAISAL: DIFFERENT OPTIONSpage 40
Playing with the numbers
Having linked all the calculations to the rate of affordable housing allowed an easy comparison of the different options. In particular, it is interesting to note the different amount of af-fordable housing allowed by the three schemes, having as a result the same value per hectare for the area.
SUMMARY OPTION1 OPTION2 OPTION3
Total value of development £ 858,434,831 £ 805,381,264 £ 775,140,711
Total development cost £ 322,546,079 £ 272,127,287 £ 241,033,926
Residual value £ 511,686,233 £ 509,051,457 £ 509,904,264
Site Area Ha 6.17 6.17 6.17Net Site Area (HA) 5.57 5.57 5.57Value/Ha £ 82,931,318 £ 82,504,288 £ 82,642,506Plot ratio 2.45 2.20 2.08Residential density (habitable rooms/ha) 476 430 404
Affordable housing / New development 46% 30% 16%Affordable housing as proportion of total 41% 29% 29%
Developer's profit £ 52,060,814 £ 43,888,699 £ 38,860,028
SUMMARY SITE1 SITE2 TOTALTotal value of development £ 726,045,074 £ 187,610,957 £ 913,656,031
Total development cost £ 240,377,825 £ 87,941,810 £ 328,319,635Southwark CIL £ 16,549,415 £ 7,653,105 £ 24,202,520Residual value £ 469,117,834 £ 92,016,043 £ 561,133,876
Site Area Ha 5.2 0.97 6.17Net Site Area (HA) 4.6 0.97 5.57Value/Ha £ 90,214,968 £ 94,861,900 £ 90,945,523Plot ratio 2.40 2.65 2.45Residential density (habitable rooms/ha) 463 549 476
UNIVERSITY OF WESTMINSTER | AURD717 DEVELOPMENT PROCESS | SIMONE GOBBER
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