Kevin McCloud meet Graeme and Melanie who have huge ambitions for a home in Hackney. They plan to build on a tiny twin garage plot with no surrounding land that cost them £275,000 on a traditional Victorian terraced road. Architect Graeme has come up with an unapologetically modernist, bright red-clad design laid out to maximise space over three floors and has set out just 12 months to build it.

An ambitious couple set out to build a revolutionary eco home in the Cotswolds, which will not only use very little energy, it will also produce four times the energy it needs. Environmental consultant Duncan is planning to manage the project himself, moving out of the London home he shares with solicitor Liz to live near the site. But although he is totally committed, he has never faced anything like this before, and almost inevitably the technically complex 18-month build, while living apart takes its toll on the couple.