Loft conversion drawings in Hammersmith and Fulham

Flats and houses

Only 24.6 per cent of households in the borough live in a house, and 32.1 per cent own their home. Where a house has been converted into flats, the loft is rarely a private space.

Permitted development for a roof enlargement applies to houses, not flats, so a converted building needs planning permission and usually the freeholder's consent. We ask about the lease, the roof space and any shared ownership before we spend time on design.

Historic England lists 268 entries in the borough, and a listed house also needs listed building consent for roof alterations.

Surveying a London terrace roof

A terrace roof may have a rear outrigger, a butterfly or valley roof between two pitches, shared chimney stacks and party walls that rise above the slate. We survey all of it: ridge height, pitch, rafter depth, the outrigger and the existing stair, set on one datum with the floors below.

That survey shows how much new floor a rear dormer or an outrigger roof can add, and where the stair lands. The structural engineer works from the same measurements, and the later building regulations drawings in Hammersmith and Fulham agree with the planning set.

Party walls matter here too, because a dormer on a terrace usually needs to bear on or close to a wall shared with a neighbour. We flag early when the project will need a party wall award.

The same goes for neighbours' light and outlook. A new dormer is visible from the gardens behind, and in a close-knit street an objection from next door can slow a decision, so we show clearly how far the dormer sits from each boundary and how it relates to the windows beside it.

Timing at Hammersmith and Fulham council

The council decided 506 householder applications in its latest published year and granted 97.8 per cent. Only 79.8 per cent, however, were decided within eight weeks or an agreed extension.

That timing figure is a reason to allow extra time. The figures cover all household projects in the borough and do not predict yours, but they are good reason to submit a complete, well-explained set the first time, because a request for more information resets the clock.

What the drawings include and what they cost

A loft set for the borough shows the existing and proposed floor plans, the new stair, the roof in section, all four elevations and the location and block plans. Loft conversion drawings start at £695 including VAT, fixed before you commit, and are normally ready about a week after the survey.

A second chartered technologist checks every sheet before it goes anywhere. If the council asks for changes, we redraw at no extra charge until the application is decided.

Other drawings and neighbouring boroughs

For the roof form in detail, see dormer loft conversion drawings in Hammersmith and Fulham. A rear extension at the same time? Rear extension drawings in Hammersmith and Fulham cover that. The whole range is at architectural drawings in Hammersmith and Fulham. Nearby, compare Ealing and Kensington and Chelsea.