L-Shaped Dormer Conversions
Victorian terraces with a rear addition — the classic Bristol outrigger — can take a dormer over both roofs, joined into an L. It is how a terrace gains two rooms and a bathroom in one conversion.
The L-shaped dormer builds one dormer over the main roof and a second over the back addition, connected at the corner. On the right terrace that creates a main bedroom, a second room or study, and a bathroom — more like a new floor than a converted loft.
The junction between the two roofs is the craft moment: levels rarely align and the valley has to be re-engineered and weathered properly. It is detail-heavy carpentry, which suits us fine.
- Best for
- Terraces with rear additions
- Typical gain
- 2 rooms + bathroom
- Guide price
- from £50,000 + VAT
More loft conversions routes
Ready to talk about a l-shaped 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