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Get Your Free Brecon QuoteSee what your Brecon neighbours say about our loft conversion work.
"Building Group were the only company to spot a potential issue with our chimney in Brecon and solved it before starting. True experts."
"Cannot recommend them enough for loft conversions in Brecon. They handled all the planning permission and the build was smooth."
"The 10-year guarantee gave us peace of mind. A trustworthy company serving the Brecon area."
"Finally, a builder who turns up when they say they will! Restored my faith in tradesmen. Top job in Brecon."
"I used to hit my head on the rafters. Now I can do jumping jacks in my new Brecon bedroom. Incredible transformation."
"We were worried about the disruption, but the team at Building Group were incredibly considerate of our home in Brecon."
See more genuine Brecon customer reviews and loft conversion project galleries.
Read More ReviewsTransform your Brecon property's unused loft space into beautiful, functional living areas with our professional loft conversion services. Whether you need an extra bedroom, home office, or playroom in Brecon, we create bespoke solutions tailored to your lifestyle.
Our experienced Brecon team handles every aspect of your loft conversion project. From initial design and planning permission through to final decoration, we ensure your Brecon conversion maximizes space, natural light, and property value.
Choose the perfect conversion type for your Brecon property to maximize space and value
The most cost-effective option for Brecon properties using roof windows for natural light. Perfect for Brecon homes with adequate headroom.
Add valuable floor space and headroom to your Brecon property with single or multiple dormers. Popular choice in Brecon for space optimization.
Transform sloping hip roofs into vertical gable walls in your Brecon home, significantly increasing usable floor space. Ideal for Brecon semi-detached properties.
The premium option for Brecon properties creating maximum space with near-vertical walls. Perfect for period properties in Brecon.
Your Brecon property needs minimum 2.3m headroom at the highest point and sufficient floor area for conversion. Our Brecon specialists provide free assessments to determine if your loft is suitable and advise on the best conversion type for your Brecon property and budget. Most Brecon conversions fall under permitted development rights, but we handle all planning and building regulations applications where required.
Most terraced and semi-detached homes in Brecon have a 40-50 cubic meter allowance for roof extensions without full planning permission. We handle all Lawful Development Certificate applications for you.
Every conversion we build is inspected by approved inspectors to ensure compliance with Part B (Fire Safety) and Part L (Insulation) of the building regulations specific to Brecon housing stock.
Living in a terraced or semi-detached house in Brecon? We manage the Party Wall Notice process with your neighbors to ensure works can start on time.
Comprehensive evaluation of your Brecon loft space, structural assessment, and advice on the best conversion type for your property.
Architectural drawings, 3D visualizations, and planning permission applications for Brecon properties. We handle all regulatory approvals.
Steel beam installation, floor strengthening, and staircase construction by qualified Brecon engineers.
Velux roof windows, dormer construction, and window installations to maximize natural light in Brecon homes.
Complete bathroom installations including plumbing, electrical work, and luxury fixtures in your Brecon loft.
Plastering, decorating, flooring, and interior design services to create beautiful Brecon living spaces.
Professional space assessment
Architectural drawings and approvals
Professional loft specialists
Professional loft conversions throughout Brecon city centre, including period properties, modern homes, and conservation areas requiring specialist Brecon planning expertise.
Expert loft conversion services across all Brecon suburban areas. Specializing in semi-detached, detached, and terraced properties throughout Brecon.
Specialist conversions for Brecon's Victorian, Edwardian, and period properties. Sympathetic designs maintaining character while maximizing space.
Expert handling of Brecon conservation area requirements. We navigate planning restrictions and create beautiful conversions that comply with local regulations.
Brecon Loft Conversions Completed
Average Brecon Customer Rating
Years Serving Brecon
Brecon Building Control Approved
With over 15 years of experience in Brecon, we understand local planning requirements, building regulations, and architectural styles. Our Brecon team delivers exceptional loft conversions that enhance your property value.
Hip-to-gable conversion creating master bedroom with ensuite in a Victorian Brecon terrace. Added 30sqm of living space.
Project Value: £48,000
Dormer loft conversion in modern Brecon semi-detached. Created two bedrooms and bathroom for growing family.
Project Value: £42,000
Mansard conversion in Brecon conservation area. Luxury master suite with dressing room and ensuite.
Project Value: £65,000
"Building Group were the only company to spot a potential issue with our chimney in Brecon and solved it before starting. True experts."
- Daniel Evans, Brecon
"Cannot recommend them enough for loft conversions in Brecon. They handled all the planning permission and the build was smooth."
- Jennifer Wright, Brecon
"The 10-year guarantee gave us peace of mind. A trustworthy company serving the Brecon area."
- Andrew Martin, Brecon
Loft conversion costs in Brecon vary based on type, size, and specifications. Typical Brecon prices: Velux conversions £20,000-£30,000, Dormer conversions £35,000-£45,000, Hip-to-gable £40,000-£55,000, Mansard conversions £45,000-£65,000. All Brecon quotes include structural work, insulation, electrics, plastering, and building control fees. Contact us for a free Brecon survey and detailed quote.
A transparent guide to typical conversion costs in the Brecon area (2025 Estimates)
| Conversion Type | Suitability | Timeframe | Price Range |
|---|---|---|---|
| Velux (Roof Light) | Existing headroom > 2.3m | 4-6 Weeks | £20k - £30k |
| Dormer (Rear) | Semis & Terraces | 6-8 Weeks | £35k - £50k |
| Hip-to-Gable | End-terrace & Semi-detached | 8-10 Weeks | £45k - £60k |
| Mansard | Period Properties / London Styles | 10-12 Weeks | £50k - £75k+ |
*Prices are indicative for Brecon properties and subject to survey.
Senior Structural Specialist
"I oversee all loft conversions in the Brecon area. My job is to ensure your project meets local building regulations while maximizing every inch of space. I'm happy to visit your property for a preliminary structural assessment."
Four recent loft conversions across the UK — from a London mansard within a conservation area to an L-shaped Manchester dormer, a Birmingham hip-to-gable, and a Leeds rear dormer. Tap any project for the full case study.
Loft
Mansard loft conversion on a London Victorian terrace within a conservation area — full mansard build raising the rear roof line, slate-clad cheeks to match the neighbours, two double bedrooms with private en-suites, and a sky-lit landing. Approval secured under full planning, not Permitted Development.
Loft
L-shaped rear dormer loft conversion on a Victorian terrace — turning unused roof space into two double bedrooms and a shared en-suite, with two Velux windows to the front, a glass balustrade to the new staircase, and matching slate-grey finish to blend with the original roof.
Loft
Rear dormer loft conversion turning unused roof space into a master bedroom and en-suite, with two Velux roof windows to the front and a slim glass balustrade to the new staircase.
Loft
Hip-to-gable conversion with rear dormer on a 1930s semi-detached — squaring off the original hipped roofline to gain full standing headroom, creating a master bedroom with built-in wardrobes and a generous en-suite, plus a third Velux to the front for natural light.
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