A loft here runs into the same front and back distinction as everything else in Market Harborough, and in Little Bowden it is decisive.
Because the Article 4 direction there covers front elevation alterations, anything that changes the front roofline is firmly a planning matter. A front dormer is not permitted development anywhere in any case, but in Little Bowden even a rooflight on the front slope needs treating as an application rather than an assumption. Rear dormers and rear rooflights are a far easier conversation and are usually where the space wants to go.
Head height is the other early question and it is the one that most often ends the discussion. On the older housing near the centre the roofs were not built for standing room, and a steep looking roof can still leave you short of two metres along the walking line once the floor build up and insulation are in. We measure at the quotation rather than after.
The estate housing around the town is trussed, which means the structure gets reworked rather than strengthened. Routine work for us and not the same job or the same price as opening up a cut roof.
The permitted development volume allowance is forty cubic metres on a terrace and fifty on a semi or detached house. Escape, fire separation and stair position are all Building Regulations matters. Our loft conversion page goes through the structural options and the order the work happens in.