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The benchmarks
Client satisfaction with product 82%
Client satisfaction with service 74%
Client satisfaction with process 80%
Defects 3.1 call-backs per unit
Predictability - cost +0.64%*
Predictability - time + 6.5%*
Productivity 26.2m2 per week
Safety 1 incident per 12 500m2 built
Build cost £759m2
Build time 63 weeks, for site of 20-39 units
Build waste 2.93 skips per unit
* Measure based on differentiation in £/weeks between proposed cost/programme at contract stage and delivered cost/programme at handover
Productivity
Number of units Best practice m2 per week Poorest practice
m2 per week		 Average
Productivity rate
m2 per week
1-9 units 23.2 5.6 12.35
10-19 units 39.6 8.1 18.8
20-39 units 50.8 19.3 35.4
40-59 units 73 37.4 50
60+ units 84.1 46.2 65.3
Build cost
Substructure
(£ per m2)		 Superstructures
(£ per m2)		 Finishes
(£ per m2)		 Externals
(£ per m2)		 On-Costs
(£ per m2)		 Totals
(£ per m2)
All Schemes £89.00 £286.00 £115.00 £147.00 £122.00 £759.00
1-9 units £69.00 £311.00 £121.00 £137.00 £163.00 £801.00
10-19 units £85.00 £329.00 £109.00 £147.00 £116.00 £786.00
20-39 units £84.00 £262.00 £110.00 £106.00 £104.00 £666.00
40-59 units £98.00 £246.00 £146.00 £176.00 £111.00 £777.00
60+ units £102.00 £294.00 £81.00 £165.00 £143.00 £785.00
Build time
Best practice time (weeks) Poorest time (weeks) Average time (weeks)
1-9 units 19 104 40
10-19 units 30 134 56
20-39 units 44 87 63
40-59 units 61 91 77
60+ units 78 165 118