Dormer Loft Conversions
The dormer is Bristol's default loft conversion for a reason: it converts sloping roof into full-height room, usually under permitted development, and it suits terraces and semis alike.
A rear dormer pushes the roof slope outward into a flat-roofed box, creating standing room where there was crawl space. On a typical Victorian terrace that is enough for a double bedroom and en-suite; on a 1930s semi, often a generous bedroom plus storage in the eaves.
We build the dormer weathertight from the scaffold before opening up the ceiling below, which keeps the house dry and liveable throughout. Structure is engineered, insulated as a warm roof to current regulations, and finished in the cladding that suits the street — tile hanging, render or fibre cement.
Flat roof or pitched dormer?
Flat-roofed rear dormers give the most usable volume and are what permitted development allowances suit best. Pitched dormers look softer from the street and suit front elevations, but usually need planning permission.
Can I have a Juliet balcony or French doors?
Often yes on the rear — glazed doors with a guarding rail count differently from a projecting balcony, which normally needs planning. We design to keep you inside the rules you want to be inside.
- Typical use
- Double bedroom + en-suite
- Planning
- Usually permitted development
- On site
- 8–12 weeks
- Guide price
- from £40,000 + VAT
More loft conversions routes
Ready to talk about a dormer?
A visit costs nothing and commits you to nothing. We'll look at what your house can take, give you straight answers, and tell you plainly if the numbers don't stack up.
- You tell us the ideaThree quick questions — no essay required.
- We call within a working dayA real conversation about what your house can take.
- A visit, then an itemised quoteEvery line written down, and only if you want one.
- On site
- Mon–Fri, 8am–5pm
- Office calls
- until 6pm weekdays
- We reply
- within one working day