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Cost analysis of Coin Street site B
Housing and retail £/m2
7056m2 gifa
Car park £/m2
7001m2 gifa
Total £/m2Outline specification
Enabling worksÌý40.0519.95Ìý
SubstructureÌý128.5664.03Suspended reinforced concrete slab foundations
SuperstructureÌýÌýÌýÌý
Frame5.254.084.67Insitu reinforced concrete frame; Everdure Caltite waterproof concrete deck over car parking
Upper floors117.291.0759.41Insitu reinforced concrete
Roof66.6083.3574.94Exposed Douglas fir joists with plydecking and standing-seam Rhinezinc; insitu RC paved terrace
Stairs37.470.9619.29Prefab timber to dwellings; painted steel frames and screed infill
External walls102.1610.3256.42Chelwood Sunbury red handmade brick, cavity and dense blockwork; Vitex Cofassus hardwood cladding
Windows and external doors122.833.0063.15Wicona polyester powder-coated aluminium system
Internal walls and partitions55.113.6729.49Dense concrete blockwork plastered
Internal doors32.493.1617.88Solid-core doors painted, plus fire-rated glass panels to kitchen
Finishes and fixturesÌýÌýÌýÌý
Wall finishes41.100.5220.89Paint finish on plaster; Fendor Hansen lift screens
Floor finishes42.090.5521.40Danskin timber floating floor; Freudenberg vinyl
Ceiling finishes26.180.0613.17Painted plasterboard
Fixtures and fittings21.890.5511.26Ìý
Services installationÌýÌýÌýÌý
Sanitary installation8.710.044.39Ìý
Disposal installation19.721.5410.67Ìý
Water installation39.827.6723.81Condensing boilers, solar panels
Heat source18.07 9.07Ìý
Space heating/air treatment6.27 3.15Ìý
Ventilating system44.8538.1641.52Heat-recovery ventilation system
Electrical installation37.4720.3428.94By Briggs Forrester; Erco lighting for common parts
Gas installation4.43 2.22Ìý
Lift installation7.132.524.83European Lifts side-action traction passenger lift
Protective installation2.5627.1114.79Sprinklers to car park
Communications installation7.53 3.78Ìý
Special installation7.51 3.77Ìý
Builders’ work in connection15.363.179.29Ìý
External works and overheadsÌýÌýÌýÌý
External works104.7617.4161.26Ìý
Preliminaries134.8848.5291.87Ìý
Contingencies9.083.276.19Ìý
Total£1,138.61£449.65£795.50Ìý
Costs are based on original tender of February 1999, covering main and enabling contracts but excluding professional and statutory fees.