Rob Hodgson and Kay Ralph plan to build an architectural monument high on a cliff top. They want to build a sleek glass-fronted house inspired by the cliff-top villas of California.

Rebecca Sturrock has returned to her family home in Cornwall with her partner Gregory Kewish and a highly ambitious plan. Together they will transform a small, damp, single-storey bungalow into a cutting-edge home on a budget of just pounds 80,000. With rain and wind hammering the site, however, it soon becomes dangerously clear they may have bitten off more than they can chew.

Peter Berkin and his wife Chard have decided to build a new home at the bottom of their garden. Problem is, right from the start they can't agree on any part of the design - even the basic shape.

A young farmer and architect in Northern Ireland hopes to make a home out of four large shipping containers welded together to form a giant cross.

Tracy Fox and husband Steve want to build an 'urban shed' out of industrial materials in an old milk yard in south east London. But the choice of unorthodox materials proves challenging and costly.

Natasha Cargill wants to build a home shaped like two enormous periscopes in rural Norfolk. But a limited budget and tight planning restrictions start to take their toll.

Andy and Nicki Bruce try to build an experimental flood-proof floating house on an island in the River Thames. But building such a complex design on a site with limited access is not easy.

Kevin McCloud returns to a remote part of France and a restoration project of a dilapidated manor house started back in 2003 by Denise Daniel and Doug Ibbs.

Kevin McCloud returns to a unique Japanese-Welsh fusion home in the Wye Valley to see how the improvised building weathered one of the wettest winters on record.

Kevin McCloud returns to Devon for an update on one of the most inspirational builds he has ever witnessed. Marine Captain Jon White and wife Becky were living happily in a small cottage in Devon when in June 2010, while serving in Afghanistan, Jon stepped on an improvised explosive device.