The changes to Part L building regulations provide an uplift to existing energy efficiency standards for homes and are designed to be an interim step to more stringent legislation under the Future Homes Standard in 2025.
Under the new Part L changes, all new homes will be required to produce 31% less CO2 than is acceptable under the current Part L.
The new proposals include the requirement to install waste water heat recovery to all showers, heating systems flow temperatures to be no more than 55 degrees, and Solar PV and/or Low Carbon Heating technologies to be installed.