The Code for
Sustainable Homes is an Assessment Methodology introduced by the BRE. In the
guide IP 4/05 the
BRE explore the perceived extra costs associated with achieving code for
sustainable homes at various levels.
Some typical percentage increases are listed below.
Project Type / Level Sought
Pass
Good
Very Good
Excellent
House
0.0
0.4
1.7
6.9
Office
-
-0.4
-0.3
3.4
Health Care
-
-
0
1.9
CSH Code for Sustainable Homes may force you consider passive
ventilation which is why there are cost reductions associated with the
offices built to CSH.