Assess your loft because some roof spaces are more easily converted than others.

Is there enough headroom at the centre under the ridge? You ideally need 8ft (2.4m) clearance, although you may find that you can still get a useful room from as little as 7ft. A quick check with a tape measure will suffice. Also try to assess whether your roof was built using purlins or trussed rafters. The former is easier to convert, but we have vast experience in converting the latter too.