‘Absolutely any extension is going to change the look of your house,’ says architect Melanie Clear, founder of Clear Architects. ‘A double storey ... a bedroom in the existing property ...

A double-storey extension gives you all the ... is likely to be much cheaper if it's an existing space with no structural changes needed. Or whether you will need to fully excavate beneath the house ...

In those cases, loft extensions may provide the space you need for an extra bedroom or two. If you live in a detached or semi-detached house, a two storey side extension ... exercise is to collect ...