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Elemental cost analysis
Cost of element Cost per m2 gfa*
Element    
Substructure (4.11% of contract sum) 458 101 34.75
Superstructure    
Frame 404 859 30.71
Upper floors 791 409 60.03
Roofs 611 484 46.38
Stairs 128 347 9.74
External walls 3 056 369 231.84
Windows and external doors including internal walls and partitions 863 087 65.47
internal doors 267 123 20.26
Group element total (54.95%) 6 122 678 464.44
Internal finishes    
Wall finishes 196 852 14.93  
Floor finishes 416 786 31.62  
Ceiling finishes 227 078 17.23  
Group element total (7.55%) 840 716 63.77
Fittings and furnishings (3.78%) 421 491 31.97
Services    
Sanitary appliances 95 404 7.24
Services equipment
Disposal installations 91 526 6.94
Water installation 157 238 11.93  
Heat source
Space heating/air treatment 721 933 54.76
Ventilation systems 283 364 21.49
Electrical installations 1 005 699 76.29
Gas installations
Lift and conveyor systems 350 538 26.59  
Protective installations
Communication installations 193 706 14.69  
Special installations 79 774 6.05  
Builder’s work in connection 113 049 8.58  
Builders on-cost and profit
Group element total (27.75%) 3 092 231 234.56
External works    
Site works 157 461 11.94
Drainage 41 134 3.12
External services
Minor building works 7 512 0.57
Group element total (1.85%) 206 107 15.63
Subtotal 11 141 324 845.13
Preliminaries (5.40%) 601 763 45.65
Subtotal 11 743 087 890.78
Contingencies (3.41%) 400 619 30.39
   
TOTAL CONTRACT SUM 12 143 706 921.16
   
*gross floor area (internal), 13 183 m2