GS Renovation builds loft conversions across Peckham, on the Victorian terraces running off Peckham Rye and the larger period houses towards Dulwich. Whole houses with a surviving closet wing convert well; flats carved out of them generally do not. We coordinate the engineer, build the steel and run Southwark Council building control.
What an SE15 roof will give you
Measure ceiling joists to ridge before anything else, looking for roughly 2.2m to 2.4m. Peckham's taller Victorian houses usually clear it and some of the smaller later terraces do not. Where the rear closet wing is intact, an L-shaped dormer covering the main slope and the wing gives a double bedroom plus an en suite instead of one room squeezed under a slope, and that is why the same roof can be worth £55,000 to £80,000 of work rather than £45,000 to £65,000.
Those are indicative London ranges for 2026, and they move with the specification, the stair position and whether the roof needs restructuring. A rooflight conversion, at roughly £30,000 to £45,000, remains the sensible choice where the ridge is tall, the budget is fixed and you want a study or a spare room. Where a house falls inside one of Southwark's conservation areas, a mansard may be the only additional volume an officer will support.
Southwark Council, leaseholds and regulations
A lot of SE15 period houses are now two or three flats. If you own the top one, the roof space is very unlikely to be included in your lease, and converting it means dealing with the freeholder over the sale or licence of that space, a lease variation and the block's insurance. Some freeholders will engage, many will not. We assess the lease position honestly at the survey instead of quoting for work that cannot lawfully start.
For whole houses, permitted development often covers a loft within the commonly cited 40 cubic metre terrace allowance and its conditions, unless the house is listed, sits in a conservation area or is caught by an Article 4 direction. Southwark building control then inspects the fire strategy under Part B with a protected stair to a final exit, the stair under Part K, and the engineer's steel and floor. Party wall notice on both neighbours is served by you.
- Ventilation paths kept clear at eaves and ridge
- Water tank removal and conversion to a sealed system
- Building control inspections booked at floor, steel and completion
- Rooflight conversions where the roof line must not change
- New floor joists independent of the existing ceiling
Trusted Loft Conversion in Peckham
Peckham owners choose GS Renovation because we handle the structural heart of the job ourselves: steel between party walls, altered roofs, the new floor and a fire-safe stair, with Southwark Council building control at each stage. Founder Abdelaaziz Saaid brings 30+ years of hands-on experience to SE15. Fully insured, rated 4.9 from 31 MyBuilder reviews, and quotations cost nothing.
- Founder-led team with 30+ years of hands-on experience
- Water tank removed and the system converted where it blocks the space
- Free, no-obligation quotations
- Straight advice on what is and is not worth spending money on
- Neighbours given notice before the noisy stages
- Staircase set out to Part K within the space you have