An inventor plans a futuristic, wheelchair-friendly house for his family in a double-decker bus, all for just £20,000, and a family trade in their costly London life for a debt-free home amid 35 acres of Welsh countryside. Elsewhere, Sarah visits a mortgage-free eco-property in Shropshire, and a salvaged caravan made into a home for just £3,500.

• Sarah Beeny

• Sarah Beeny
• Damion Burrows
• Max McMurdo