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Elemental cost breakdown, Scottish Gas HQ
Office building, including fit-out, of 10,568 m2 gross internal floor area, comprising four storeys and basement
ELEMENTTotal cost £Cost £/m2 gifa% split 
SUBSTRUCTURE489,000 46.032.39rotary and continuous flight auger piles; ground beams; retaining wall; reinforced concrete basement slab
Frame and upper floors2,598,000 244.5412.67fully exposed insitu reinforced concrete frame; enhanced finish; coffered floor slabs
Roof376,500 35.441.84insitu reinforced concrete slab; Sarnafil roof covering; soffit to external
Stairs341,700 32.161.67precast concrete stair cores; feature atrium staircase
External walls2,089,900 196.7110.19aluminium curtain walling; horizontal sun-screens
Windows and external doors73,600 6.930.36revolving main entrance door; pass doors; emergency exit doors
Internal walls and partitions971,700 91.464.74core fit-out including cubicles; tenant system partitions; smoke curtains
Internal doors291,900 27.481.42timber laminate doors to cores; steel doors to plant areas
Wall finishes89,400 8.410.44emulsion paint; tiled splashbacks
Floor finishes727,500 68.483.55raised access floors; fixing of diffusers, carpet tiles; granite to reception
Ceiling finishes77,400 7.290.38ceiling finishes to the core areas
Fittings and furnishings367,200 34.561.79blinds; signage; integrated furniture; mobile racking; kiosk
Sanitary appliances144,40013.590.70 
Special equipment454,00042.732.21kitchen equipment
Disposal installations94,5008.890.46syphonic drainage and waste services
Water installations108,10010.180.53for toilet cores, vending, shower facilities and kitchen areas
Heat source0.000.00bought as part of package plant room
Space heating and ventilation systems2,131,000 200.5810.40displacement ventilation through plenum floor; electric trench heating to glazed areas; ventilating systems passive chilled beams; fan coil units to restaurant areas; stand-alone cooling to communications rooms
Electrical installations2,168,000 204.0710.58HV/LV substation; landlord’s and small power to desks; lighting; emergency lighting; generator back-up; uninterrupted power supply; sound insulation to generator room
Gas installations14,800 1.390.07 
Lift and conveyor installations340,800 32.081.66three passenger lifts; one goods lift
Protective installations72,900 6.860.36lightning protection; earthing
Communications installations788,300 74.203.85fire alarm and voice evacuation; structured cabling; security; data cabling to desks
Special installations461,800 43.472.25building management system
Site works587,000 55.252.86external car park; extensive soft landscaping; granite plaza area; benches
Drainage150,600 14.180.73below ground floor slab and site area
External services131,300 12.360.64 
Minor building works3,800 0.360.02 
Trade contractor preliminaries1,930,900 181.759.42allowances extracted from trade contractor packages
CM staff, organisation and fees2,423,300 228.1011.82 
TOTAL20,499,300 1929.53100.00 
Notes Figures shown cover whole project costs including shell-and-core works, landlord’s category A fit-out, tenant’s category A enhancements and tenant’s category B fit-out and external works. Cost breakdown calculated by converting final accounts, or anticipated final accounts, of trade packages into elemental form.
Trade packages were tendered between February 2002 and March 2003