| Cost breakdown |
| | Element cost (£) | Cost /m2 gfa (£) | % of total cost |
| Substructure | 208 100 | 88.22 | 5.85 |
| Foundations: 450/600 mm diameter piles, 12 m deep, removing spoil | | 80 @ | £730 |
| Allowance for testing | | item @ | £15 000 |
| Pile caps: formwork with fine smooth finish to exposed surfaces | | 80 @ | £250 |
| Insitu reinforced concrete suspended slab, reinforcement @ 170 kg/m3 | | 1240 m2 @ | £80 |
| Damp-proofing: liquid asphaltic bitumen, vapour barrier, insulation | | 1240 m2 @ | £12.50 |
| Frame | 131 600 | 55.79 | 3.7 |
| Insitu reinforced concrete shear walls: average 200 mm thick, special smooth finish, reinforcement @ 175 kg/m3 | | 125 m2 @ | £90 |
| Insitu reinforced concrete columns: average 300 x 300 mm, special smooth finish, reinforcement @ 175 kg/m3 | | 180 m @ | £45 |
| Insitu reinforced concrete columns: 300 mm diameter, special smooth finish, reinforcement @ 175 kg/m3 | | 100 m @ | £70 |
| Fabricated and erected grade 43 steel frame: beams, purlins, cladding rails, based on 70 kg/m2 | | 45 t @ | £1,100 |
| Fabricated and erected grade 43 steel frame: trusses and build-up girders, based on 70 kg/m2 | | 19 t @ | £1,800 |
| Additional steelwork | | item @ | £12 000 |
| Surface finishes: blast cleaning, two-coat primer | | 1900 m2 @ | £5 |
| Upper floors | 105 800 | 44.85 | 2.97 |
| Insitu reinforced concrete suspended slab: average 280 mm thick, special smooth finish, reinforcement @ 170 kg/m3 | | 1175 m2 @ | £90 |
| Roof | 341 500 | 144.76 | 9.6 |
| Insitu reinforced concrete suspended slab: average 230 mm thick with upstands etc, special smooth finish to soffit, reinforcement @ 200 kg/m3 | | 300 m2 @ | £110 |
| Structural timber: pitched roof members in treated sawn softwood, average size 100 x 50 mm, individual supports, cappings etc | | 880 m2 @ | £12 |
| Coated stainless steel sheeting: U-profile structural liner, 18 mm water/boilproof plywood, insulation | | 1860 m2 @ | £95 |
| Extra for insulated gutters | | 150 m @ | £65 |
| Extra for perimeter treatments, facias, copings, flashings, etc | | 540 m @ | £25 |
| Patent glazing: double-glazed laminated rooflight, powder-coated aluminium glazing bars | | 240 m 2 @ | £250 |
| Allowance for louvre panels to rooflights | | item @ | £20 000 |
| Single-ply PVCu roofing: fully adhered membrane, insulation pre-cut to falls, vapour barrier | | 240 m2 @ | £75 |
| Stairs | 55 500 | 23.53 | 1.56 |
| Precast concrete stairs and half-landings: two numbers, overall rise 2.85, special smooth finish | | item @ | £12 000 |
| Insitu concrete stairs and steps: five number, overall rise 6 m, fine smooth finish to soffit | | item @ | £6,000 |
| Isolated balustrades: average 1.1 m high stainless steel handrail, toughened glass panel | | 25 m @ | £500 |
| Isolated handrails: stainless steel, 50 mm diameter | | 40 m @ | £150 |
| Mild steel screens: 50 x 50 mm rolled hollow section framing, 3 mm thick mild steel sheet both sides, associated mild steel handrails | | 30 m2 @ | £300 |
| Access ladder and roof-level gantry | | item @ | £10 000 |
| External walls | 148 600 | 62.99 | 4.18 |
| Hardwood rainscreen cladding: unseasoned English oak, Douglas fir framing, vapour barrier, 180 mm thick mineral wool insulation | | 546 m2 @ | £150 |
| Stainless steel flushing | | 160 m @ | £42 |
| Glass-reinforced cement panel cladding: steel-stud framing, insulation, mastic joints | | 160 m2 @ | £275 |
| Glass-reinforced cement soffit cladding: steel-stud framing, insulation, mastic joints | | 80 m2 @ | £200 |
| Windows and external doors | 273 700 | 116.02 | 7.69 |
| Steel-framed glazed screens, double-glazed units with 6 mm toughened glass outer pane and 10 mm laminatd glass inner pane | | 500 m2 @ | £300 |
| Extra for sliding window assemblies | | 200 m2 @ | £220 |
| Extra for polyester powder-coated doors sets | | 6 @ | £1,200 |
| Steel doors: 1.5 x 3 m, galvanised polyester powder-coated, rolled hollow section steel frame, stainless steel door furniture | | 6 @ | £5,500 |
| Steel doors: 1.1 x 2.8 m polyester powder-coated, one-hour fire-rating, galvanised steel channel frame, stainless steel door furniture | | 11 @ | £2,150 |
| External roller blinds: acrylic canvas, gear-operated, 2 m projection | | 110 m2 @ | £130 |
| Windows boards, trims and accessories | | item @ | £15 000 |
| Internal walls and partitions | 61 300 | 25.99 | 1.72 |
| Partitions: 100 mm thick dense aggregate common blockwork | | 550 m2 @ | £18 |
| Partitions: 100 mm thick dense aggregate facing blockwork | | 300 m2 @ | £32 |
| Metal and stud partition: two layers of plasterboard each face, insulation, skim coat | | 100 m2 @ | £35 |
| Glazed screens: stainless and mild steel plates and channels, 15 mm clear-float toughened glass, 100 mm obscure-float toughened glass, butt joints, silicone sealant | | 115 m2 @ | £250 |
| Cubicle paritions | | item @ | £2,500 |
| Laminate-faced duct panels: sawn-softwood framing | | item @ | £7,000 |
| Internal doors | 117 200 | 49.68 | 3.29 |
| Flush doors: sheet-steel, reinforced solid core, oak-veneer facings, factory-applied lacquer finish, mild steel door frame, 30-minute fire-rating, stainless steel door furniture | | 35 @ | £1,950 |
| Flush doors: sheet stell, reinfoced solid core, oak-vener facings, factory-applied lacquer finish, mild steel door frame, 30-minute fire-rating, stainless steel door furniture | | 19 @ | £1,450 |
| Steel doors and frames: factory-glazed, polyester powder-coated finish, one-hour fire-rating, vision panels | | 7 @ | £1,850 |
| Glass doors: 12 mm armourplate glass, floor spring, pivot fixings | | 6 @ | £1,400 |
| Wall finishes | 31 800 | 13.48 | 0.89 |
| Dry-lining: sawn-softwood framing, two layers plasterboard, skim coat | | 50 m2 @ | £15 |
| Dry-lining: sawn-softwood framing, moisture-resistant plasterboard, skim coat | | 870 m2 @ | £12 |
| Plaster: 10 mm thick, bonding agent, galvanised steel beading | | 695 m2 @ | £16 |
| Ceramic tiling | | 125 m2 @ | £50 |
| Decorations: emulsion paint, one mist coat, two top-coats | | 1600 m2 @ | £2 |
| Floor finishes | 232 200 | 98.43 | 6.52 |
| Timber narrow striop flooring: English oak boarding, tongue-and-groove joints, softwood battens | | 1500 m2 @ | £125 |
| Sand: cement screed: average 75 mm thick, wood float finish | | 1185 m2 @ | £17 |
| 600 x 600 mm polished concrete floor tiles | | 100 m2 @ | £205 |
| Medium-density fibreboard skirtings | | 760 m @ | £4 |
| Mats and matwells: stainless steel frame, coir matting | | item @ | £1,000 |
| Ceiling finishes | 57 100 | 24.21 | 1.61 |
| Suspended ceilings: metal pantiles, clip-on suspension system, 150-500 mm suspension | | 40 m2 @ | £45 |
| Suspended ceilings: vinyl-faced non-asbestos panels, 150-500 mm suspension | | 60 m2 @ | £35 |
| Dry-lining: one layer plasterboard, drywall primer, galvanised steel support channel | | 1550 m2 @ | £25 |
| Extra for plasterboard acoustic panels | | 730 m2 @ | £16 |
| Decorations: emulsion paint, one mist coat, two top-coats | | 1550 m2 @ | £2 |
| Furniture and fittings (Excluding display fittings and exhibition fit-out) | 165 000 | 69.94 | 4.64 |
| Roller-blinds and light deflectors to gallery rooflights | | item @ | £90 000 |
| Allowance for fittings to reception: desk, entry-control barrier | | item @ | £20 000 |
| Allowance for fittings to shop: counter, turnstile | | item @ | £10 000 |
| Allowance for fittings to education room: curtains, workbenches, shelving, sinks, etc | | item @ | £12 000 |
| Allowance for office desks and shelving | | item @ | £10 000 |
| Allowance for fittings to workshops, stores and staff rooms | | item @ | £18 000 |
| Allowance for cloakroom fittings | | item @ | £5,000 |
| Sanitary fittings | 14 900 | 6.32 | 0.42 |
| Urinals, WCs, wash-hand basins and fittings | | 23 @ | £550 |
| Extra for fitting to disabled toilet | | 1 @ | £350 |
| Shower: tray, door, thermostatic control | | 1 @ | £1,200 |
| Cleaners' sinks | | 2 @ | £370 |
| Kitchen equipment | 65 000 | 27.55 | 1.83 |
| Kitchen and servery equipment | | item @ | £65 000 |
| Disposal installations | 8 000 | 3.39 | 0.22 |
| Siphonic drainage rainwater disposal system and PVCu soil and vent installation systems | | item @ | £8,000 |
| Water installations | 33 000 | 13.99 | 0.93 |
| Water mains distribution | | 2359 m2 @ | £3 |
| Cold water storage and distribution | | 2359 m2 @ | £6 |
| Hot water systems: calorifier, pumps, distribution pipework | | 2359 m2 @ | £5 |
| Space heating and air treatment | 481 200 | 203.98 | 13.52 |
| Gas installation | | item @ | £4,000 |
| Heating installation: boilers, pumps, distribution, flue | | 2359 m2 @ | £35 |
| Hiross underfloor heating system | | 1184 m2 @ | £40 |
| Air-conditioning to gallery areas: supply, extract, chilled water installation, condensate drainage | | 1175 m2 @ | £250 |
| Kitchen extract ventilation | | item @ | £13 000 |
| Toilet extract ventilation | | item @ | £12 000 |
| Thermal insulation and trace heating | | item @ | £28 500 |
| Electrical installations | 298 800 | 126.66 | 8.4 |
| Mains and sub-mains installations | | 2359 m2 @ | £18 |
| Power supply to mechanical plant | | item @ | £25 000 |
| Small power installation | | 2359 m2 @ | £20 |
| Lighting and general luminaires | | 2359 m2 @ | £55 |
| Display lighting to galleries: track-mounted feature spotlights | | item @ | £45 000 |
| Emergency lighting installation | | 2359 m2 @ | £4 |
| Lift installation | 24 100 | 10.22 | 0.68 |
| Eight-person lift: electro-hydraulic, serving two floors, speed 0.4 m/second | | item @ | £24 100 |
| Protective installation | 5 300 | 2.25 | 0.15 |
| Lightning protection | | item @ | £3,500 |
| Earthing and bonding | | item @ | £1,800 |
| Communications | 40 200 | 17.04 | 1.13 |
| Fire alarm: fully addressable analogue system, smoke detectors, call points | | 2359 m2 @ | £8 |
| Telephone and data wiring | | 2359 m2 @ | £2.50 |
| Television aerial installation | | item @ | £1,400 |
| Public address system | | item @ | £7,000 |
| Security: intruder detection, closed-circuit television, etc | | item @ | £7,000 |
| Special installations | 35 400 | 15.01 | 0.99 |
| Building management system | | 2359 m2 @ | £15 |
| Builder's work in connection | 30 000 | 12.72 | 0.84 |
| Forming holes, chases etc, allow 3% | | item @ | £30 000 |
| Preliminaries and contingencies | 593 100 | 251 42 | 16.67 |
| Management costs, site establishment and site supervision, allow 15% | | item @ | £444 800 |
| Contingency sum, allow 5% | | item @ | £148 300 |
| Total cost, building only | 3,558,700 | 1,508.56 | 100 |
