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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