All new homes built in the last five years have been required to meet the minimum energy efficiency standards of Part L of the Building Regulations. The Part L standard for new homes was raised by 20 per cent. in 2006. This requirement will progressively increase leading up to the Zero Carbon target from 2016.
There are a number of homes that have been built to higher standards than regulation requires at this time. These homes may have been built for a number of different reasons through various schemes, such as the Code for Sustainable Homes.