The future is green: new-build homes. All new homes must be carbon neutral by 2016. Buy a low-cost home high on design and save thousands of pounds a year as well as cutting damaging carbon emissions. .... but it's quite a squash for all his family to fit in," says a neighbour. Houses similar to Johnson's, in nearby villages such as Long Crendon, Haddenham, Moreton and Great Haseley sell for between ?350000 and ?450000, according to the local branch of Knight Frank. ...