The products feature some of Halifax’s competitive interest rates. They are designed to incentivize buyers who consider builders green credentials as part of their home buying decision process. The products also offer extended completion dates up to February 2009, offering borrowers the option to secure a mortgage even though their property may not be ready for several months.

Andrew Bowes, head of Halifax, said: We are actively involved in sustainable housing. Our focus has always been on encouraging homebuilders and homeowners to be more energy efficient. Launching an exclusive set of products to support this is the next logical step.