Double Your House for Half the Money

In Horndean, Hampshire, Sarah meets Pete and Teressa Mitchie and their two kids. They urgently need more space, but six weeks into the build their builder pulls out and Tress is forced to take on project managing. Is a prefabricated loft built off-site the answer to the Mitchie's needs? In Porchester near Portsmouth, free spirits Ben and Kathryn want to create a floating home at sea, gambling £35,000 to buy an ex-military barge to transform into their dream home. But there are major set-backs in store...