an explanation...
The Code for Sustainable Homes is an environmental assessment rating method for new homes, which assesses environmental performance in a two stage process using objective criteria and verification, the first at design stage and then at post construction. There is generally less awareness of the contribution that good building design can make to reducing pollution and improving the environment.

The UK government is committed to addressing both causes and consequences of climate change.

Building sustainable homes requires us to minimise all sorts of environmental impacts in addition to carbon dioxide emissions, such as water use, waste generated and materials for building.

The code represents good or best practice. Each credit is technically feasible and can be delivered by the building industry. From 1st May 2008 it is mandatory for a Code Sustainability Certificate or a NIL rated certificate to be included in a Home Information Pack (HIP).

This applies to all new homes that are marketed for sale.

The code is intended as a single national standard to guide industry in the design and construction of sustainable homes. It is a means of driving continuous improvement, greater innovation and exemplary achievement in sustainable home building.