Cost model: Supermarkets | Features

New build supermarket with 50,000 ft² sales area
	element cost	cost/m² gfa £	% of total cost
Supermarket shell
Substructure	348,000	46.2151	19.26
Pad foundations and ground beams 6960 m² @ £15
150 mm reinforced concrete ground floor slab; 175 mm granular fill, powerfloated finish; including formation of below floor ducts to checkout areas only 6960 m² @ £35
Frame	362,300	48.1142	20.05
Steel propped portal frame, cold rolled purlin sections, surface treatment, excluding decorations; allowance based on 41 kg/m² 286t @ £1,050
Fire casing to columns and beams under first floor, including cavity barriers 570 m² @ £28
Structural steel frame to form first floor 50t @ £920
Upper floors	28,500	3.7849	1.58
Holorib decking and insitu concrete topping to first floor 570 m² @ £50
Roof	447,700	59.4555	24.78
Standing seam aluminium roof, curved to 172 m radius, including inner liner tray 5500 m² @ £40
Eaves detail to roof cladding 170 m @ £135
Single layer polymeric roof covering, built-up system including 85mm insulation board and inner liner tray to flat roof areas to front of store 1640 m² @ £50
Allowance for rainwater goods, including syphonic drainage to standing seam roof Item @ £30,000
Allowance for mansafe system and hatches to flat roof Item @ £15,000
Profiled metal pvf2 coated cladding to form canopy, including secondary steelwork, flashings and decoration 210 m² @ £370
Stairs	20,000	2.6560	1.11
Reinforced concrete stairs to first floor level; galvanised steel balustrade and handrails 2nr @ £10,000
External walls, windows and doors	225,200	29.9070	12.46
Profiled galvanised steel built-up cladding system, 120mm quilt insulation with white inner liner sheet; polyester powder coating 890 m² @ £35
Feature cladding band to store front and customer restaurant, composite cladding system with bonded liner and insulation 675 m² @ £20
Allowance for louvres, flashings and detailing 65 m² @ £850
Allowance for column casings Item @ £10,000
Polyester powder coated aluminium shopfronts; double glazed with safety glass; including 4nr double manual doors and frames 300 m² @ £310
Aluminium windows; polysester powder coated; sealed double glazed units 25 m² @ £260
Softwood framed, metal lined external doorsets, including ironmongery and decoration 17nr leaves @ £750
Allowance for shutters to loading bay doors Item @ £3,000
Disposal installations	125,300	16.6401	6.93
Below slab drainage, manholes, covers, etc 6960 m² @ £18
Protective installations	4,000	0.5312	0.22
Allowance for lightning protection Item @ £4,000
Preliminaries and contingency	246,000	32.6693	13.61
Contractor's site establishment and supervision @ say 6% Item @ £94,000
Contractor's overheads and profit @ say 4% Item @ £66,000
Contingency @ say 5% Item @ £86,000
TOTAL CONSTRUCTION COST (Shell only, rate based on GIFA)	1,807,000	239.98	100.00

New build supermarket with 50,000 ft² sales area
	element cost	cost/m² gfa £	% of total cost
Supermarket fit-out
Internal partitions & doors	237,000	31.47	4.71
Internal metal stud partitions, including sundry metalwork 2160 m² @ £55
Fire protection / stopping 2160 m² @ £20
Carpentry and joinery including internal doors and frames and trucking doors Item @ £50,000
Security and fire shutters generally Item @ £25,000
Internal finishes	338,200	44.91	6.72
300 x 300 terrazzo flooring to sales area 5100 m² @ £35
Checkout duct covers Item @ £25,000
Allowance for Aluminium access covers and frames Item @ £5,000
150 x 150 white wall tiles to bakery, including epoxy grout 440 m² @ £32
150 x 150 ceramic floor tiles to bakery, prep areas, serveries and WC's, including epoxy grout, skirtings, angles, etc 540 m² @ £45
Vinyl sheet flooring to back-up areas, including skirtings, trims, DPM 425 m² @ £48
Allowance for other miscellaneous wall / floor finishes Item @ £25,000
Suspended ceilings to domestic areas and customer WC's 465 m² @ £45
Allowance for insitu finishes, including screeding, etc Item @ £25,000
Fittings and equipment	1,309,000	173.84	26.01
Allowance for internal signage Item @ £18,000
Allowance for trolley protection rails Item @ £20,000
Allowance for ATM / cash office Item @ £30,000
Specialist joinery to create front brand wall Item @ £20,000
Shopfitting to Pharmacy Item @ £30,000
Allowance for gondolas to sales floor generally 4,645 m² @ £38
Servery, plant and equipment to bakery Item @ £260,000
Shopfitting to specialist areas including hot food, deli, meat and fish, salad bar, etc Item @ £130,000
Allowance for checkouts (not including service desk and kiosk) 30nr @ £3,000
Allowance for miscellaneous shopfitting/specialist items, etc Item @ £150,000
Fitting out to customer restaurant (excluding catering equipment) 300 m² @ £835
Fitting out to staff WCs Item @ £16,000
Fitting out to staff dining room Item @ £45,000
Allowance for fit-out to staff offices / meeting room / training room Item @ £15,000
Allowance for racking to bulk stock areas Item @ £50,000
Compactor Item @ £8,000
Water installations	30,000	3.98	0.59
Allowance for plumbing and water installation Item @ £30,000
Services equipment	734,800	97.58	14.60
Refrigeration distribution installation complete; including pipework and installation Item @ £150,000
Refrigeration plant, including packs and condensers (2nr 200kW dual temperature systems) Item @ £140,000
Refrigeration cabinets to shopfloor, including mixture of full height glass door cabinets, opentop cabinets, etc 4,645 m² @ £85
Packaged coldstores including controls, etc Item @ £50,000
Space heating, air treatment and ventilation	468,900	62.27	9.32
Ventilation ductwork including insulation, grilles, diffusers, etc 7,530 m² @ £26
Air treatment plant, air handling units and central boiler plant supplying 18 m2/s at 30degC 7,530 m² @ £21
Pipework to heating system Item @ £95,000
Allowance for special attenuation Item @ £20,000
Electrical installation	507,500	67.40	10.08
Mains and sub-mains 7,530 m² @ £11
Trays and trunking 7,530 m² @ £6
Small power 7,530 m² @ £7
General lighting to sales floor (800-1,000 lux) 4,645 m² @ £28
Allowance for feature lighting to sales floor 4,645 m² @ £10
Back of house lighting 2,885 m² @ £15
Power to services installations; containment Item @ £27,000
Allowance for electrical works to specific departments / customer restaurant Item @ £80,000
Lift installations	100,000	13.28	1.99
Allowance for 8 person goods lifts to first floor 2nr @ £30,000
Scissor lift to service yard Item @ £20,000
Dock levellers / shelters 2nr @ £10,000
Protective installations	154,600	20.53	3.07
Allowance for sprinkler installation 7,530 m² @ £20
Earthing and bonding Item @ £4,000
Communications installation	154,400	20.50	3.07
Fire alarm installation 7,530m² @ £8
Public address system 7,530m² @ £1
Telephone installation Item @ £5,000
Structured cabling Item @ £20,000
Allowance for CCTV installation 19nr @ £1,400
Security Tagging Item @ £35,000
Special installations	270,000	35.86	5.37
BMS / controls Item @ £85,000
Allowance for catering equipment to customer restaurant (115 covers) Item @ £185,000
Builder's work	150,000	19.92	2.98
Allowance for builder's work in connection with services say @ 6% Item @ £150,000
Preliminaries and contingency	578,000	76.76	11.49
Contractor's site establishment and supervision @ say 6% Item @ £267,000
Contractor's overheads and profit @ say 4% Item @ £189,000
Contingency @ say 2.5% Item @ £123,000
TOTAL CONSTRUCTION COST (Rate based on GIFA of extended store)	5,032,400	668.30	100.00

New build supermarket with 50,000 ft² sales area
	element cost	cost/m² gfa £	% of total cost
External works
Site works	797,000	105.84	28.98
Allowance for site preparation 22,000 m² @ £9
Tarmac surfacing to car park and access road 13,000 m² @ £20
Concrete surfacing to service yard 1,200 m² @ £35
Paving to front of store 800 m² @ £40
Signage and street furniture Item @ £50,000
Trolley bays Item @ £5,000
Allowace for soft landscaping, including topsoiling Item @ £140,000
Boundary fencing Item @ £70,000
Drainage	132,000	17.53	4.80
Allowance for drainage and sewer connections 22,000 m² @ £6
External services	331,000	43.96	12.04
BWIC underground services Item @ £61,000
External lighting installations including BWIC 15,000 m² @ £8
Allowance for utilities supplies, directs and diversions Item @ £150,000
Minor building works	1,165,000	154.71	42.36
Allowance for stand alone substation/pump house; complete Item @ £15,000
Allowance for 6 pump PFS, including car wash and jet wash Item @ £450,000
Allowance for kiosk Item @ £450,000
Allowance for section 106 / 278 works Item @ £250,000
Preliminaries and contingency	325,000	43.16	11.82
Contractor's overheads, site establishment and supervision @ say 8% Item @ £194,000
Contingency @ say 5% Item @ £131,000
TOTAL CONSTRUCTION COST (External works only, rate based on GIFA)	2,750,000	365.20	100.00
TOTAL CONSTRUCTION COST (Rate based on GIFA)	9,589,400	1,273.48

Cost breakdown
	element cost	cost/m² gfa £	% of total cost
Supermarket extension
Works to existing	215,000	28.33	4.20
Allowance for repairs and alterations to existing shell, including redecoration Item @ £215,000
Extension to shell	1,241,300	163.54	24.26
Extension to rear sales wall including removal of equipment; demolition of existing; pad foundations and floor slab, steel frame, external walls and doors to match existing, tiled roof structure, incorporation of new M&E with existing systems, internal finishes 280 m² @ £690
Ditto to non-entrance side extension 1,115 m² @ £940
Fitting out	2,575,800	339.37	50.35
Part refurbishment / part new shopfitting to existing sales area and new shopfitting to extended area including M&E works 4,365 m² @ £535
Allowance for changes to back-up areas Item @ £175,000
Internal finishes, branding and signage 4,365 m² @ £15
External works	280,000	36.89	5.47
Allowance for external works, including groundworks, foul and surface water drainage, services diversions, fencing, and street furniture Item @ £280,000
Preliminaries and contingency	804,000	105.93	15.72
Contractor's overheads, site establishment and supervision @ say 13% Item @ £560,000
Contingency @ say 5% Item @ £244,000
TOTAL EXTENSION COST (Rate based on GIFA of extended store)	5,116,100	674.06	100.00
Supermarket refurbishment
Remedial works / finishes	1,028,800	823.04	52.29
Removal of existing asbestos contaminated ceiling and replacement with metal tile suspended ceiling; to sales floor 1250 m² @ £130
Repair and make good existing sales area floor finishes, including overlay with vinyl, 1250 m² @ £85
Additional lighting to sales floor Item @ £45,000
Refrigeration plant / infrastructure costs Item @ £155,000
Upgrade / remedial works to M&E services Item @ £385,000
Internal finishes, branding and signage Item @ £60,000
Alteration works to existing customer entrance Item @ £50,000
Changes to back-up areas Item @ £65,000
Fitting out	497,800	398.24	25.30
Refurbishment of store including new and reused shopfittings; associated M&E works 1250 m² @ £305
Allowance for new checkouts Item @ £65,000
Allowance for new staff restaurant and other back of house works Item @ £50,000
External works	25,000	20.00	1.27
Allowance for limited external works Item @ £25,000
Preliminaries and contingency	416,000	332.80	21.14
Contractor's site establishment and supervision @ 10% Item @ £155,000
Additional cost of nightworks and 24hr working Item @ £50,000
Allowance for special attendances Item @ £40,000
Contractor's overheads and profit @ 4.5% Item @ £77,000
Contingency @ say 5% Item @ £94,000
TOTAL REFURBISHMENT COST (Rate based on sales floor area)	1,967,600	1,574.08	100.00