The Arnolds live in East Dulwich and have a small son, with another baby on the way as well. They desperately want planning permission to open up their kitchen and turn their home into the perfect family friendly living space. However this involves filling in their side return - something that might adversely affect their neighbours' outlook. They have a budget of 60 thousand pounds - how much extra space will that buy them?It is not just families with new babies who need more space. More and more young adults are financially unable to fly the nest and need extra room in their parents' homes. Ed White wants to create a suite for daughter Hannah. Ed's got an impressive model railway, which runs like clockwork - but when it comes to planning approval, everything is coming off the rails.