Homes designed and built from April 2008 will be scored in nine different categories of sustainable design, including energy, water and waste, and receive a score of between zero and six stars.
The move comes as the government moves towards its target of all new homes emitting zero carbon from 2016.
Speaking at the Eco Build 2008 conference, housing minister Caroline Flint said: “By requiring a rating for all new homes against the Code for Sustainable Homes in the run up to 2016, we are making the standards that different homes reach more transparent and are creating an important incentive for house builders to provide greener, more sustainable homes."
Ms Flint's full speech
'Greater transparency for buyers'
The UK Green Building Council welcomed the move. Chief executive Paul King said: “The Code for Sustainable Homes will fundamentally change the way we build and buy new homes in this country.”
“Buyers of new homes, for the first time, will see how green their home is - not just on its carbon emissions, but on other vital issues such as water consumption and impact on biodiversity.”
Mr King added: “This will help stimulate the market for green building as consumers demand more sustainable homes that have lower energy bills, are built producing less needless waste and that are great places to live.”