Adam was desperate to remain living in London, but with house prices shooting up, the choice of homes on offer was small, as were the homes themselves. Adam bought one of the thinnest homes in the country. At just six foot wide in places, this former alleyway was dark and barely habitable - can Katy possibly find a way to unlock its potential? In Walsall, Hardeep and Rupinder have plenty of room for their family, but it's in all the wrong places. They regularly have their extended family over but Rupinder does all the cooking in a tiny kitchen and a ramshackle lean-to which has seen better days. Piers designs them the ultimate sociable space and encourages them to orientate their home on the garden.