Season 4

George visits a flat-pack tin church. There's also a luxury converted chapel, ice carving in a Liverpool wonderland and a catch-up with some of George's best builds of the year.

A 70s fire engine is transformed into a mobile shop. Can a dilapidated pony trailer be made into a holiday retreat? And George and Will reveal their wilderness cabin in all its glory.

George visits a spectacular treehouse in Scotland. A Doctor Who-inspired shed in Macclesfield. And a glass lodge in Italy's Dolomite mountains.

George visits a floating pool in a converted barn in Italy. He meets a couple making a home from portable office cabins and a schoolteacher who found a pond under her garden decking.

George visits a derelict Victorian railway signal box being turned into a garden summer house in Cumbria, a lakeside glass house in Italy, and a VW campervan conversion in Derby.

George meets newlyweds investing their life savings in a dilapidated yacht. His Italian road trip takes in a stunning treehouse, and his wilderness lodge starts to take shape.

The Italian road trip takes in possibly the world's coolest fire station. DIY enthusiasts Ben and Michelle want to build a summer house using disused shipping pallets.

George meets a man trying to build a UFO-styled house; a woman making a garden room using material including earth, straw and human hair; and visits a floating swimming pool in Italy.

George plans a woodland retreat for less than the price of a family holiday and visits a breathtaking property in Italy.