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Capital costs for a typical 4000 m2 industrial unit
  element cost £ cost/m2 gifa £
   
   
Substructure 206 100 51.54
Excavate to reduce levels, disposal of excavated material from site 22 000 5.5
In situ concrete slab; granular sub base and so on; 35 KN/m2 127 900 31.98
Reinforced concrete ground beams 17 300 4.33
Reinforced concrete column portal bases 25 000 6.25
Reinforced concrete column portal bases to offices 4 100 1.03
Facing brickwork below damp-proof course; 300 mm high 9 800 2.45
External walls 100 000 25
Blockwork inner skin to external walls of warehouse 14 900 3.73
Facing brickwork at low levels 7 000 1.75
Vertical sheet cladding, profiled metal cladding 12 900 3.23
Vertical sheet cladding; Ward’s Moduclad DW 1000 horizontal    
flat panel cladding to suit additional height of building 48 300 12.08
Extra over vertical sheet cladding for fire protection 1 900 0.48
Curtain walling 15 000 3.75
Inner walls 15 500 3.88
Block main compartment wall 9 300 2.33
Fire lining to head of walls 1 900 0.48
Block walls to cores, reception and WCs 4 300 1.08
Floors 11 000 2.75
Precast concrete floor beams 11 000 2.75
Stairs 6 200 1.55
Steel cat ladder for roof access 1 000 0.25
Precast concrete staircase 5 200 1.3
Roof 162 800 40.7
Plastisol-coated profiled standing-seam metal-sheet roofing system;    
6° pitch; insulation; metal liner trays; 10% GRP profiled rooflights 133 700 33.43
Roof penetrations for services 2 200 0.55
Mansafe roof access system 12 900 3.23
Soffit to eaves 14 000 3.5
Frames 163 800 40.95
Steel portal frame including purlins and sheeting rails 112 000 28
Structural steel framing to offices 12 100 3.03
Fire protection and decoration to structural steelwork 39 700 9.93
External wall openings 30 200 7.55
Polyester powder-coated finished aluminium windows 1200 mm high 20 700 5.18
Cill boards and decoration 700 0.18
Electrically operated sectional overhead loading doors;    
3500 × 4500 mm; decoration; without vision panels 5 300 1.33
Double-skinned mild steel fire escape doors 3 500 0.88
Internal wall openings 5 200 1.3
Solid beech veneered internal single door to cores, WCs and so on 5 200 1.3
Balustrading 12 000 3
Stainless steel handrail and balustrade 7 500 1.88
Painted steel handrail and balustrade 4 500 1.13
Internal wall finishes 11 200 2.8
Two coats plaster; one mist and two full coats eggshell emulsion 8 200 2.05
Render and white glazed wall tiling (full height) 800 0.2
Paint to internal face of walls in warehouse and workshop 2 200 0.55
Floor finishes 14 200 3.55
Cement and sand screed; 75 mm thick 3 500 0.88
Carpet tiles; allow PC sum £15/m2 supply 6 000 1.5
Ceramic tiling and screed to reception 1 500 0.38
Ceramic tiling to WCs including screed and skirting 800 0.2
Softwood skirting; decoration 1 500 0.38
Ceramic tiled skirting to reception 300 0.08
Matwell; frame and mat 600 0.15
Stair finishes 1 000 0.25
Carpet tiles to treads of flight of stairs; nosings 1 000 0.25
Ceiling finishes 7 900 1.98
Suspended ceiling; 600 × 600 mm mineral fibre tiles;    
exposed T-grid system; fire breaks 7 700 1.93
Suspended ceiling; 600 × 600 mm mineral fibre tiles;    
exposed T-grid system; to WCs 200 0.05
Internal drainage 21 900 5.48
Soil and vent to WCs 1 200 0.3
Eaves and parapet gutters and fittings;    
bituminious paint to inside surfaces 16 400 4.1
External aluminium rainwater pipes and fittings;    
polyester powder-coated finish 4 300 1.08
Water supply 3 600 0.9
Cold water installation 1 700 0.43
Hot water installation 800 0.2
Local hot water heaters 800 0.2
Builders’ work 300 0.08
Space heating 21 500 5.38
Low-pressure hot water radiator heating to first-floor offices 19 800 4.95
Builders’ work 1 700 0.43
Ventilation 9 500 2.38
Mechanical ventilation to WCs 9 000 2.25
Builders’ work 500 0.13
Power supplies 46 200 11.55
Sub-mains distribution to first floor and reception 5 900 1.48
Twin switched socket outlets to cores/reception 600 0.15
Skirting trunking to offices 9 800 2.45
600 × 600 mm recessed lighting to offices/reception 14 200 3.55
600 × 600 mm lighting to WCs/cores 2 100 0.53
Emergency lighting to warehouse 1 700 0.43
Lightning protection 5 700 1.43
Power to overhead doors 1 000 0.25
Working drawings and manuals 3 500 0.88
Builders’ work 1 700 0.43
Lifts 31 500 7.88
Eight-person passenger lift 26 000 6.5
Lift pit base 4 000 1
Builders’ work 1 500 0.38
Security 700 0.18
Fire alarm conduit to offices 700 0.18
General fittings 3 650 0.91
Duct panel full height to WC 1 200 0.3
Vanity top/base unit 1 250 0.31
WC partition two-door 1 200 0.3
Sanitary fittings 4 800 1.2
Lavatory basins 500 0.13
WC suites 600 0.15
Urinals 200 0.05
Mirrors 1 200 0.3
Disabled WC/hand basin complete with grab rails and so on 2 300 0.58
General siteworks 238 900 59.73
Excavate to reduce levels; remove from site 26 300 6.58
Service yard and feeder road comprised of concrete;    
reinforcement and granular sub-base 125 000 31.25
Car parking area comprising macadam paving 28 000 7
Pedestrian paving 11 500 2.88
Soft landscaping to planting beds 25 600 6.4
External watering points and landscaping maintenance 2 000 0.5
Steel painted bollards to loading doors 1 400 0.35
External lighting 13 300 3.33
External floodlight to goods door 800 0.2
Crossover works 5 000 1.25
Drainage 96 200 24.05
Drainage; pipework; surrounds; brick manholes;    
trapped gullies; sewer connections 96 200 24.05
Installations 13 400 3.35
Water supply 900 0.23
440 V electrical supply 2 600 0.65
100 mm diameter PVCu duct 3 200 0.8
Gas supply 1 500 0.38
Service trenches 5,200 1.3
Preliminaries 222 000 55.5
Preliminaries 200 000 50
Inflation to start on site 22 000 5.5
Total 1 460 950 365.24
 
Maintenance costs for a 4000m2 industrial unit over 25 years  
Basic project     Project typical of current market trends      
Specification Capital cost Maintenance costs/year Specification Capital cost Maintenance costs/year Comments
Roof            
Profiled steel sheet 112 000 9 000 Standing seam roof 133 700 7 500 Maintenance costs for basic project exclude potential disruption to tenants’ operation caused by effect of roof leaks.
Insulation (0.45 U-value) 16 000 4 200 Insulation (0.25 U-value) 32 000 3 700 Improved insulation is particularly attractive to tenants of larger units and those with specific heating requirements.
External walls            
Brickwork cavity wall 44 000 120 Profiled steel sheet composite cladding panel 13 000 1 100 Damage to brickwork is more difficult to match, which can have longer-term effects on building aesthetics.
           
Gutters            
Valley gutter 9 500 275 Eaves gutter 16 500 150 Leaking valley gutters can have long-term corrosion implications on steel frames
Protection            
No protection to openings – 600 Steel bollards to door openings, high-profile kerbs to vulnerable areas 4 400 100 Bollards may need replacing.
           
           
External surfaces            
60 mm block paviours 15 000 160 80 mm block paviours 17 500 0 Replacement of paviours to damaged areas can cause considerable disruption to tenants’ operations.
Landscaping            
Low-quality 15 000 1 700 High-quality low-maintenance 26 000 1 400 Low-quality landscaping may need to be replaced more regularly.