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Elemental cost breakdown, Belgrave House SW1
Office building, fit out up to and including Cat A, comprising 31,285 m2 gross internal floor area over 8 floors (basement, ground, 1-6)
ELEMENT Total Cost £ Cost £/m gifa% splitÌý
SUBSTRUCTURE2,836,81990.684.92Breaking out of existing reinforced basement slab and pile caps, re-use of existing piles where possible, new 750 and 1200 mm diameter bored piles, reinforced concrete raft slab, ground beams, king post and retaining walls
SUPERSTRUCTUREÌýÌýÌýÌý
Demolition1,293,32441.342.24Demolition of existing building, asbestos removal, all site surveys required
Frame and upper floors protection6,114,217195.4410.61Steel frame with 130 mm concrete slab on hollow rib decking, including fire and lift shaft secondary steelwork
Roof1,864,65259.63.24Hollow rib decking with 200 mm concrete slab, paving slabs on insulation on asphalt, atrium roof framing and glazing, all finishes to roof terraces plus glazed balustrade, cleaning cradle, fall arrest system and access ladders, main entrance
Stairs397,30012.70.69Pre-cast concrete stairs, stainless steel balustrade and handrails
External walls/windows and doors8,794,401281.1115.26Aluminium curtain walling, picture frame portland stone bays to main grid, full height glazed entrance screen and bays, full height glazed entrance screen, 4.5 m revolving doors, reconstituted stone plant screens to roof plant, roller
Internal walls/partitions1,358,54643.422.36140 mm blockwork walls to plant rooms, WC and cubicles, jumbo stud partition to circulation areas, dry-lining to internal face of external columns, atrium curtain walling
Internal doors1,588,89850.792.76Full height veneered hard wood doors with ironmongery to cores, softwood lacquer finish doors to risers and plant rooms, glazed doors and screen to through corridors
FINISHESÌýÌýÌýÌý
Wall finishes1,349,95143.152.34Portland stone to main and rear reception, Aurasina limestone to central lift lobbies, white glass to WCs and cubicles, ceramic tiles to shower block, emulsion paint throughout
Floor finishes1,788,30657.163.1Limestone to reception and lift lobby floors, ceramic tiles to WCs, core corridors and staircases, 130 mm raised access floor, white lining to car park/loading bay, MDF skirtings to office areas
Ceiling finishes1,672,42353.462.9Standard proprietary metal tile ceiling grid, 1500 × 1500 mm grid, plasterboard edge perimeter with bulkhead to curtain walling, plasterboard ceiling to WCs, shower blocks, back of house etc
FITTINGS & FURNISHINGS417,82813.360.73Marble vanity tops and framing to WCs, mirrors, reception desks, reception
SERVICESÌýÌýÌýÌý
Sanitary appliances164,6235.260.29Ìý
Disposal installation339,35910.850.59Cast iron stacks with PVCu water run outs
Water installation233,0817.450.4Copper distribution system from calorifiers
Heat source372,12111.890.65Four 597 kw condensing boilers in basement
Space heating/air treatment5,743,107183.579.97Four-pipe fan coil system with adiabatic dry coolers and chillers
Ventilating system337,94310.80.59Ducted supply and extract system, fire rated in basement
Electrical installation3,228,659103.25.6Bus-bar risers, 1200 × 600 mm modular light fittings developed for architect
Gas installation59,8631.910.1Gas boosters complete with steel pipework distribution
Lift installation2,043,63465.323.55Six 21-passenger lifts, 2 fire fighting lifts, 1 goods lift, 1 car lift to
Protective installation708,24422.641.23Sprinklers to basement car park. Dry risers elsewhere
Communication installation1,142,55436.521.98Fire alarm, landlords intruder detection system and communications wireways
Special installation10,1120.320.02Ìý
ºÚ¶´ÉçÇø works in connection with services764,77024.451.33Ìý
EXTERNAL WORKSÌýÌýÌýÌý
Site works538,46417.210.93External paving to perimeter of site, soft landscaping requirements, access ramp
Drainage126,4004.040.22Below basement slab and site area
External services528,55416.890.92External lighting, statutory connections, new sub station
Total45,818,1531,464.54*100Ìý
Notes Figures shown are based upon the agreed Target Cost Plan (April 2002) and exclude carpet to office areas, artwork budget of £150,000 and any client enhancement
The above figures exclude main contractor’s preliminary costs, main contractor overheads and profit, and direct construction contingencies.
*£1842/³¾2 including contractor’s preliminaries, overheads, profit and contingencies