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Apartment shell and core – cost breakdown
Ìý£ element cost£/³¾2 gross internal floor area% of total cost
Substructure595,00085.008.51
Substructure, piled foundations, pile caps, ground slab, site excavation and disposal, dewatering etc 1000 m2 @ 550
Allowance for drainage 1000 m2 @ 35
Allowance for lift pits etc 2 @ 5000
Frame and upper floors1,322,500188.9318.93
Insitu reinforced concrete frame and upper floors, 250 mm thick slabs, 225 mm blade columns, allowance for forming openings 6650 m2 @ 150
Balconies, primary and secondary frame, decking, balustrading 65 @ 5000
Roof120,80017.261.73
Flat roof coverings, single ply membrane, insulation, ballast; allowance for details to upstands 1000 m2 @ 75
Extra for roof terraces and paving to terraces 350 m2 @ 45
Allowance for roof drainage, roof sundries 1000 m2 @ 15
Roof access equipment, latchways, cat ladder, access hatch, safety balustrade Item @ 15,000
Stairs144,00020.572.06
RC concrete stairs, mild steel balustrades and handrails, carpet to treads/risers 14 @ 7000
Extra over for enhanced finishes to entrance level staircases 2 @ 5000
Balustrade and parapet to terraces; polyester powder coated steel 120 m @ 300
External walls, windows and doors1,866,000266.5726.70
Unitised curtain walling; polyester powder coated insulated aluminum spandrel panels; sealed double-glazed tilt and turn windows 4000 m2 @ 450
Extra for doors to balconies, allowance for single leaf doors, ironmongery 65 @ 800
Entrance doors, aluminium framed glazed door and screen 1 @ 10000
External fire escape doors, metal, polyester powder coated finish to match curtain walling 2 @ 2000
Internal walls and partitions287,00041.004.11
Core walls, insitu concrete, 225 thick 420 m2 @ 100
Party walls to apartments and corridors; dense concrete block to comply with ºÚ¶´ÉçÇø Regulations Part E; head restraint, fire stopping 4900 m2 @ 50
Internal doors135,00019.291.93
Fire doors to cores and corridors; hardwood architraves/frames, including basic ironmongery 60 @ 750
Fire doors to risers; hardwood architraves / frames, including basic ironmongery 20 @ 500
Apartment entrance doors; solid core doors, hardwood architraves/frames, including basic quality security ironmongery 100 @ 800
Wall finishes90,00012.861.29
Plasterboard to concrete and blockwork, with specialist painted finish; entrance hall 500 m2 @ 50
Plasterboard to concrete and blockwork, with emulsion paint finish; lift lobbies and corridors 2600 m2 @ 25
Floor finishes94,10013.441.35
Feature ceramic floor tiles, sand cement screed; entrance hall 50 m2 @ 120
Heavy duty carpet, sand cement screed; corridors 1050 m2 @ 60
Ceramic tile, sand cement screed; lift lobbies 170 m2 @ 100
Skirtings, surface fixed skirting, painted mdf 810 m @ 10
Ceiling finishes41,6005.940.60
Painted plasterboard with feature bulkheads; reception 50 m2 @ 100
Painted plasterboard on battens; lift lobbies and corridors 1220 m2 @ 30
Furniture and fittings15,0002.140.21
Allowance for reception area fittings; mailboxes, signage, mats and matwells, artwork Item @ 15,000
Sanitary fittings7,0001.000.10
Allowance for cleaners sinks 14 @ 500
Disposal installations98,00014.001.40
Allowance for rainwater disposal; downpipes and connections to below-ground drainage 7000 m2 @ 3
Allowance for soil, waste and overflow installations; stacks and connections to below-ground drainage 7000 m2 @ 11
Water installations125,70017.961.80
Allowance for cold water storage tanks, booster pumps, mains distribution pipework, trace heating, water softener/conditioner etc 7000 m2 @ 15
Hot and cold water services to landlord’s areas, including local water storage heaters 1220 m2 @ 17
Space heating and ventilation161,20023.032.31
Electric panel heaters; landlord’s areas 1220 m2 @ 3
Central extract system for bathrooms; ductwork, extract fans 7000 m2 @ 20
Reception area air treatment Item @ 7500
Supply and extract; plantroom areas Item @ 10000
Electrical installations177,90025.412.55
Allowance for mains switchgear, cabling, containment and landlord’s distribution boards 7000 m2 @ 10
Small power; landlord’s areas 1220 m2 @ 6
Power supply to mechanical services 7000 m2 @ 5
Lighting installation to landlord’s areas, including emergency lighting 1220 m2 @ 30
Feature lighting to entrances Item @ 15000
Earthing and bonding 7000 m2 @ 2
Lift installation180,00025.712.58
Lift installation; 13-person firefighting lifts serving seven storeys 2 @ 90000
Protective installations50,6007.230.72
Allowance for dry riser inlets 1220 m2 @ 30
Lightning protection 7000 m2 @ 2
Communications installations123,70017.671.77
Allowance for fire alarm system to landlord’s areas 1220 m2 @ 35
Allowance for telephone containment only 7000 m2 @ 4
Allowance for TV/Satellite system; central aerial and distribution 7000 m2 @ 4
Allowance for CCTV and access control to perimeter Item @ 25000
Special Installations28,0004.000.40
Allowance for localised controls for cold water system 7000 m2 @ 4
Builder’s work in connection48,0006.860.69
Forming holes and chases; firestopping. Allow 5% Item @ 48000
Preliminaries and contingencies1,276,000182.2918.26
Testing and commissioning of building services installations. Allow 2.5% of services cost Item @ 25000
Contractor’s overheads, site establishment and site supervision, excluding design fees. Allow 16% Item @ 918000
Design reserve and contingency. Allow 5% Item @ 333000
Total shell-and-core cost6,987,100998.16100.00
Total shell-and-core cost (£/³¾2 net saleable floor area)1,249.93