Two coastal properties on the Gower Peninsular and in Suffolk as well as a small piece of land in Yardley are sold at auction. Martin, Martel and Jacqui follow the developers' progress, all of whom have to battle rising material costs.

A house with a quirky layout in Maidstone, a flat in North Shields and an office in Bognor Regis with planning permission for a flat above it are all sold at online auctions. Martin and Martel check out the properties - all ripe for development - and meet the people who reckon they can make some money from their auction investments.