GS Renovation converts lofts in Dulwich, where SE21 runs from period villas near Dulwich Park to bay-fronted Victorian and Edwardian terraces with rear closet wings. The stock takes a good loft, but Dulwich carries a layer of consent that most of South London does not, and we plan around it from the start.
Dormers and L-shapes on SE21 terraces
On a bay-fronted Dulwich terrace with a closet wing, the L-shaped dormer is the layout that pays. It wraps the main rear roof and the wing, so you get a double bedroom with standing height plus a shower room over the wing rather than one awkward space. On the larger period villas the roofs are deeper and a straight rear dormer, or in some cases a rooflight conversion with no added volume at all, is enough to make a good room.
Every scheme starts with a tape measure at the ridge. Roughly 2.2m to 2.4m of existing height is the working threshold; below it you are looking at lowering the ceilings of the rooms beneath or lifting the roof, which is a far bigger and more visible job. Chimney stacks, purlin positions and the depth of the wing all shape where the stair can land, and the stair position, not the roof, is what most often dictates the final layout.
Consents: Southwark, conservation areas and the Dulwich Estate
Southwark Council decides planning, and large parts of SE21 sit within conservation areas where permitted development for roof extensions is withdrawn. Beyond that, many Dulwich properties are subject to the Dulwich Estate's scheme of management, which requires the Estate's own consent for external alterations. Estate consent and planning permission are two different processes and neither substitutes for the other, so both belong in the programme before scaffolding is booked.
Building regulations sit on top of both and are not negotiable. The stair enclosure becomes a protected escape route to a final exit under Part B, with fire doors and interlinked alarms; the stair itself is set by Part K; new floor joists are sized by the structural engineer and carried on steels bearing on padstones, not on the old ceiling joists. Where the house is terraced or semi-detached, party wall notices go to the adjoining owners before work starts.
- Rooflight conversions where the roof line must not change
- Protected stair enclosure and fire doors to Part B
- Building control inspections booked at floor, steel and completion
- Trussed roofs redesigned before any web is cut
- Interlinked mains-powered smoke alarms
Why Choose GS Renovation in Dulwich
Dulwich lofts need the consent sequence handled properly, and GS Renovation builds the programme around it: planning or a lawful development certificate through Southwark, Estate consent where the scheme of management applies, party wall notices, then the engineer's steelwork and a watertight dormer. Fully insured, building control compliant, and 30+ years of hands-on structural experience behind the founder.
- Interlinked mains alarms fitted and certified
- Itemised pricing, so you can see what every stage costs
- A dedicated project manager from first survey to handover
- Water tank removed and the system converted where it blocks the space
- Rated 4.9 from 31 reviews on MyBuilder
- Straight advice on what is and is not worth spending money on