Kevin McCloud follows the last of the self-build projects, as married couple Pauline and Godfrey seek to downsize to a modular, factory-built home that is erected in just two weeks.

A couple of engineers plan an upside-down house. Garrie is building the largest project on the street. The stakes are high though as his wife Sue has health issues.

A pair of 20somethings take a risk building their first home together using an untested method. And a father and son hope to bond building a family home with space for all.

Paul and Blanka hope to build an ambitious and cheap eco-home. But the project costs the family more than they bargained for - not just financially.

In Oxfordshire, two couples make their own homes, getting on the property ladder as part of Britain's biggest self-build project. The effort pushes one pair close to breaking point.

Terry and Olwen, and their neighbour Lynn - all three of retirement age and the most senior builders on the street - set out to create two unique, bespoke new homes.