Testimonials
"Lee completed a dormer to the rear conversion on my house and I can not fault the work. He is extremely professional and precise with his workings which has left my loft looking pristin..."
A dormer loft conversion is one of the most effective ways to add a full, usable room to your Bristol home. By extending vertically out from the existing roof slope, a dormer creates a box-shaped structure with full-height walls, a flat or pitched roof, and significantly more headroom than the original loft space allows.
Dormer conversions suit most Bristol property types from the Victorian and Edwardian terraces of Clifton, Redland and Bishopston to the semi-detached homes of Bedminster and Southville. Most rear dormers fall under permitted development, meaning no planning permission is required.
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We produce full architectural drawings and handle any planning applications or permitted development sign-off on your behalf. Most rear dormers in Bristol fall under permitted development, but we confirm this for your specific property before any work begins.
The existing roof slope is opened up and a timber-framed dormer structure is built out, typically with a flat felt or EPDM roof. Steel beams are installed where needed to carry the new loads, and the party wall process is managed if applicable.
Once the structure is weathertight we complete the internal works; insulation, plasterboard, flooring, staircases, electrics and any en-suite plumbing. You receive a fully finished room ready to use.
All dormer conversions require building regulations approval regardless of planning status. We manage the full building control process, including sign-off, so your conversion is fully certified and compliant.
Dormer conversions suit a wide range of properties and budgets. Here's what to consider.
A rear dormer loft conversion in Bristol typically costs between £35,000 and £55,000 depending on size, specification and finish. This includes structural work, internal fit-out, building regulations and our project management. All projects are quoted on a fixed-price basis — no surprises during the build.
Most rear dormer conversions in Bristol fall under permitted development rights, meaning no formal planning application is required. Exceptions include conservation areas, listed buildings and Article 4 direction zones covering parts of Clifton, Redland and other historic Bristol neighbourhoods. We assess your property's planning status as part of our free consultation.
A typical dormer loft conversion in Bristol takes 8 to 12 weeks from start to completion. The structural and weatherproofing phase usually takes 2 to 3 weeks, with internal works following through to decoration and final sign-off.
A well-executed dormer conversion typically adds 15 to 25% to the value of a Bristol home. Properties in high-demand areas such as Clifton, Redland and Bishopston often see returns toward the upper end of that range. Adding a bedroom, particularly one with an en-suite is consistently one of the highest-value home improvements in the Bristol property market, and in most cases the cost of the conversion is recovered in full on resale.
Every dormer loft conversion we complete in Bristol comes with our 10-year structural guarantee as standard. We're NAPIT registered and Gas Safe certified, and all work is completed to full building regulations approval.
Not sure if a dormer is the right option for your home? We offer a free, no-obligation consultation at your property. We'll assess your loft space, talk through your options and provide an honest recommendation, whether that's a dormer, hip-to-gable, Velux or something else entirely.
Book Your Free ConsultationWe carry out cut roof loft conversions across Bristol and the surrounding area including Clifton, Redland, Bedminster, Southville, Keynsham, Long Ashton, Portishead, Nailsea and Clevedon.
"Lee completed a dormer to the rear conversion on my house and I can not fault the work. He is extremely professional and precise with his workings which has left my loft looking pristin..."
Find out about how a loft conversion can improve your home, important steps to consider and the type of conversions we offer to Bristol & surrounding areas
See the difference Concept Space & Design Loft Conversions can make and the time, detail and effort we put into every aspect of your conversion from start to finish
Thank you for visiting us today.
With over 21 years of combined experience in the loft conversion industry, whether it’s to create extra space for a new addition to the family, a place to relax or to work. It is our privilege and passion to deliver you a fully bespoke design and build package to create your dream home.
Lee Western
Managing Director