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Costs

Costs based on contract sum

SUBSTRUCTURE

FOUNDATIONS/SLABS £46.04/m2

Bored-pile foundations, in-situ concrete pile caps, ground beams, lift pits and ground slab. Strengthening retained existing perimeter foundation and retaining wall

SUPERSTRUCTURE

FRAME £56.94/m2

In-situ concrete beams, columns and shear walls

UPPER FLOORS £36.74/m2

In-situ concrete slabs

ROOF £5.21/m2

Inverted construction with fully bonded modified bitumen membrane, hcfc- free insulation, precast concrete paving and cobble ballast

STAIRCASES £17.25/m2

Steel open-tread exposed main stair with stainless steel balustrades. Steel secondary stairs with stainless steel handrails

EXTERNAL WALLS, WINDOWS AND

EXTERNAL DOORS £548.22/m2

Bespoke panelised double-glazed curtain walling with pre-patinated bronze spandrels, brise-soleil grilles and external cast-bronze framework to main street elevations. Pre-patinated bronze rainscreen system and insulation on blockwork to secondary street elevations. Double-glazed curtain walling system to north 'Cascade' elevation. Point fixed single glazing to atrium external wall and roof

INTERNAL WALLS AND PARTITIONS £33.05/m2

Blockwork at basement, lower gound and partially ground level. Drywall construction on upper floors

INTERNAL DOORS £32.82/m2

Full-height hardwood framed and veneered doors generally, painted timber to service risers, metal to below-ground service areas. Glazed fire doors and screens to main lift lobbies. Stainless steel ironmongery throughout

INTERNAL FINISHES

WALL FINISHES £25.50/m2

Hardwood veneer panelling to wc cubicles. Screen-printed glass panelling with stainless steel trims to wcs, lift lobbies and main entrance area. Granite panelling in wcs, atrium and main entrance area. Painted dry lining elsewhere

FLOOR FINISHES £52.21/m2

Granite in wcs, lift lobbies, main entrance and atrium, granite open stair treads with inset stainless steel nosing strips. Raised access floor with carpet in office areas and carpet to secondary stairs

CEILING FINISHES £43.07/m2

Perforated metal tiles to office areas, painted plasterboard elsewhere. Fibrous-plaster lighting troughs in lift lobbies and main entrance area

FITTINGS AND FURNISHINGS

FURNITURE £9.76/m2

Bespoke hardwood and granite reception desk. Four Barcelona chairs, two Eames chairs and one Mies van der Rohe low table. Trees and planting in atrium. Two David Begbie patinated broze mesh sculptures. Stainless steel fittings and accessories in wcs

SERVICES

SANITARY APPLIANCES £5.80/m2

Granite inclined handwashing slab on exposed-stainless steel framework with stainless steel drainage equipment in wcs. White vitreous china sanitary fittings

SERVICES EQUIPMENT £15.69/m2

Bespoke Building Management System including software and pc installation

DISPOSAL INSTALLATIONS £4.91/m2

Refuse compactor. Above-ground drainage and rainwater disposal systems

WATER INSTALLATIONS £9.21/m2

Hot and cold water supplies including cold-water booster system, storage tanks, gas-fired hot water heater and distribution pipework

HEAT SOURCE £2.14/m2

Two gas-fired condensing boilers and associated flues

SPACE HEATING/AIR TREATMENT £71.98/m2

Four-pipe fan coil air conditioning system

VENTILATING SYSTEMS £46.97/m2

Mechanical ventilation and smoke extract to atrium, plantrooms and car park. Smoke extract to offices and staircases. Ventilation to wcs

ELECTRICAL SERVICES £91.93/m2

Transformers, main switchboards and sub-mains cables and distribution boards. Lighting and small power to landlord's areas. Lighting to tenant's areas. Fire alarm and security installations

LIFT AND CONVEYOR INSTALLATIONS £55.15/m2

Group of four high-quality passenger lifts, one doubling as a fire lift. One goods lift, one dedicated fire lift and one vehicle lift

PROTECTIVE INSTALLATIONS £28.99/m2

Lightning protection system, sprinklers and hosereel installation

COMMUNICATION INSTALLATIONS £0.99/m2

Modifications to existing bt services

SPECIAL INSTALLATIONS £10.29/m2

External facade-cleaning installations including powered trolley and jib with cradle. External latchway systems

BUILDERS' WORK IN CONNECTION £7.93/m2

Cutting and forming holes, chases etc, providing supports and brackets

PRELIMINARIES AND INSURANCES

PRELIMINARIES, OVERHEADS AND PROFIT £160.81/m2

EXTERNAL WORKS

LANDSCAPING, ANCILLARY BUILDINGS £200.00/m2

Yorkstone paving with granite kerbs and upstands to the perimeter of the building

cost summary

Cost per m2 Per cent

(£) of total

SUBSTRUCTURE 46.04 3.09

SUPERSTRUCTURE

Frame 56.94 3.82

Upper floors 36.74 2.46

Roof 5.21 0.35

Staircases 17.25 1.15

External walls, windows and

external doors 548.22 36.76

Internal walls and partitions 33.05 2.22

Internal doors 32.82 2.20

GROUP ELEMENT TOTAL 730.23 48.96

INTERNAL FINISHES

Wall finishes 25.50 1.71

Floor finishes 52.21 3.50

Ceiling finishes 43.07 2.89

GROUP ELEMENT TOTAL 120.78 8.10

FITTINGS AND FURNISHINGS 9.76 0.66

SERVICES

Sanitary appliances 5.80 0.39

Services equipment 15.69 1.05

Disposal installations 4.91 0.33

Water installations 9.21 0.62

Heat source 2.14 0.14

Space heating/air treatment 71.98 4.83

Ventilating systems 46.97 3.15

Electrical installations 91.93 6.16

Gas installations 0.22 0.01

Lift and conveyor installations 55.15 3.70

Protective installations 28.99 1.94

Communication installations 0.99 0.07

Special installations 10.29 0.69

Builders' work in connection 7.93 0.53

GROUP ELEMENT TOTAL 352.20 23.61

PRELIMINARIES 160.81 10.78

CONTINGENCIES 71.61 4.80

TOTAL 1491.43 100.00

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