How much does a loft conversion cost in Bristol?

A Velux loft conversion in Bristol is bespoke and quoted per project. A dormer loft conversion is bespoke and quoted per project. Hip-to-gable conversions is bespoke and quoted per project. Final price depends on staircase position, en-suite inclusion, structural changes and finish level.

How long does a loft conversion take?

Velux conversions typically take 6–8 weeks on site. Dormer conversions take 8–12 weeks. Hip-to-gable conversions take 10–14 weeks.

Do I need planning permission for a Bristol loft conversion?

Most loft conversions fall under permitted development. Hip-to-gable conversions and any front-facing dormer often need full planning. Conservation areas always need planning consent.

Will I have enough headroom?

You need at least 2.2m of headroom in the centre of the loft for a useable conversion. We measure on the first site visit and tell you honestly whether the loft is workable, marginal, or too tight.

Home · Services · Loft Conversions Bristol

Loft Conversions Bristol

Loft conversions in Bristol.
Another bedroom, an office, a master suite.

A loft is the cheapest square metre you can add to a Bristol home. Done properly, it becomes the best room in the house. We design and build Velux, dormer, hip-to-gable and mansard conversions across BS3 to BS9 and beyond.

Free consultation →WhatsApp us

Why a loft

Add a room. Don't add a mortgage.

A typical Bristol loft conversion adds 15–25 sq m of usable space and 15–25% to the property value. For a family that's outgrown a Victorian terrace but loves the area, it's the cheapest way to stay put.

Most of our Bristol lofts are dormers, they fit Victorian and Edwardian terraces, give proper headroom, and don't need full planning. Hip-to-gable works well for 1930s semis in Henleaze and Westbury Park. Velux-only suits homes where the loft is already big.

Discuss your loft →

Types of loft

Four loft conversion types we build in Bristol.

Velux loft

The cheapest option, no change to the roofline, just rooflights and an internal fit-out. Good for big existing lofts.

6–8 weeks

Dormer

The Bristol classic. A box dormer at the rear gives proper headroom and a flat-ceiling bedroom. Usually permitted development.

8–12 weeks

Hip-to-gable

For semi-detached and end-of-terrace homes with hipped roofs. Squares off the side, opens up the whole loft. Common in BS9.

10–14 weeks

Mansard

The biggest gain, the entire roofline is rebuilt to give a near-full storey upstairs. Required in some conservation areas.

14–18 weeks

MB Design and Build loft conversion, finished interior

Bristol · dormer loft

What's included

Everything from headroom check to handover.

A Bristol loft conversion isn't just framing. It's stair design, fire compliance, soundproofing, insulation to current building regs, electrics, plumbing, plastering, decoration. We do all of it on a single contract.

Architectural drawings & structural engineering
Planning & building regs handled
Fire-rated staircase & doors
Insulation, electrics, plumbing, en-suite
Full decoration & finish
10-year workmanship guarantee

FAQ

Loft conversions Bristol, your questions, answered.

Loft conversions are quoted per project, Velux, dormer, hip-to-gable and mansard each have very different scopes. After a free site visit you receive a written ballpark, then a single fixed price after the design stage. Everything from fire-compliant staircase to decoration is included.

Velux 6–8 weeks. Dormer 8–12 weeks. Hip-to-gable 10–14 weeks. Mansard 14–18 weeks. Add 6–10 weeks of design and planning before site start.

Most rear dormers fall under permitted development. Hip-to-gable, mansard, side dormers and any conversion in a conservation area need full planning. We handle the application as part of the design stage.

2.2m clear in the centre of the loft is the minimum. We measure on the first visit and tell you honestly whether it's workable. If headroom is tight, a dormer or mansard often solves it.

Usually directly above the existing stairs to keep first-floor sleeping space. We design the staircase position as part of the architectural drawings and tell you which bedroom (if any) loses space.

Yes. Most of the work happens above the existing ceilings. There's a noisy week when we cut into the structure and a messy day when we install the staircase, but otherwise life carries on.

Other services