A one-bedroom flat in Hackney, a semi in Stoke-on-Trent and a cottage with huge potential in a village just outside Bath are sold at online property auctions. Once renovated, the developers who bought them all hope to turn a profit on their investments.

Today's property development projects run from seven weeks to several years. Martin and Dion track progress on renovations in Bristol and Blackley and a building project on land in Stoke.