Is your house feeling a bit tight? Let our Bath team perform some magic. We turn cramped attics into spacious sanctuaries.
Get Your Free Bath QuoteSee what your Bath neighbours say about our loft conversion work.
"Fast, efficient, and friendly. Turned our dark Bath attic into a bright, airy yoga studio. Thank you Building Group!"
"They finished ahead of schedule! In the building trade! Unheard of! Best crew in Bath by a mile."
"Cannot recommend them enough for loft conversions in Bath. They handled all the planning permission and the build was smooth."
"Top quality dormer conversion. Added significant value to our Bath property. Friendly team and very clean working environment."
"Our hip-to-gable conversion has completely changed our family life. We finally have the space we need in Bath without moving."
"Building Group were the only company to spot a potential issue with our chimney in Bath and solved it before starting. True experts."
See more genuine Bath customer reviews and loft conversion project galleries.
Read More ReviewsTransform your Bath 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 Bath, we create bespoke solutions tailored to your lifestyle.
Our experienced Bath team handles every aspect of your loft conversion project. From initial design and planning permission through to final decoration, we ensure your Bath conversion maximizes space, natural light, and property value.
Choose the perfect conversion type for your Bath property to maximize space and value
The most cost-effective option for Bath properties using roof windows for natural light. Perfect for Bath homes with adequate headroom.
Add valuable floor space and headroom to your Bath property with single or multiple dormers. Popular choice in Bath for space optimization.
Transform sloping hip roofs into vertical gable walls in your Bath home, significantly increasing usable floor space. Ideal for Bath semi-detached properties.
The premium option for Bath properties creating maximum space with near-vertical walls. Perfect for period properties in Bath.
Your Bath property needs minimum 2.3m headroom at the highest point and sufficient floor area for conversion. Our Bath specialists provide free assessments to determine if your loft is suitable and advise on the best conversion type for your Bath property and budget. Most Bath conversions fall under permitted development rights, but we handle all planning and building regulations applications where required.
Most terraced and semi-detached homes in Bath 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 Bath housing stock.
Living in a terraced or semi-detached house in Bath? We manage the Party Wall Notice process with your neighbors to ensure works can start on time.
Comprehensive evaluation of your Bath loft space, structural assessment, and advice on the best conversion type for your property.
Architectural drawings, 3D visualizations, and planning permission applications for Bath properties. We handle all regulatory approvals.
Steel beam installation, floor strengthening, and staircase construction by qualified Bath engineers.
Velux roof windows, dormer construction, and window installations to maximize natural light in Bath homes.
Complete bathroom installations including plumbing, electrical work, and luxury fixtures in your Bath loft.
Plastering, decorating, flooring, and interior design services to create beautiful Bath living spaces.
Professional space assessment
Architectural drawings and approvals
Professional loft specialists
Professional loft conversions throughout Bath city centre, including period properties, modern homes, and conservation areas requiring specialist Bath planning expertise.
Expert loft conversion services across all Bath suburban areas. Specializing in semi-detached, detached, and terraced properties throughout Bath.
Specialist conversions for Bath's Victorian, Edwardian, and period properties. Sympathetic designs maintaining character while maximizing space.
Expert handling of Bath conservation area requirements. We navigate planning restrictions and create beautiful conversions that comply with local regulations.
Bath Loft Conversions Completed
Average Bath Customer Rating
Years Serving Bath
Bath Building Control Approved
With over 15 years of experience in Bath, we understand local planning requirements, building regulations, and architectural styles. Our Bath team delivers exceptional loft conversions that enhance your property value.
Hip-to-gable conversion creating master bedroom with ensuite in a Victorian Bath terrace. Added 30sqm of living space.
Project Value: £48,000
Dormer loft conversion in modern Bath semi-detached. Created two bedrooms and bathroom for growing family.
Project Value: £42,000
Mansard conversion in Bath conservation area. Luxury master suite with dressing room and ensuite.
Project Value: £65,000
"Fast, efficient, and friendly. Turned our dark Bath attic into a bright, airy yoga studio. Thank you Building Group!"
- Lisa Chen, Bath
"They finished ahead of schedule! In the building trade! Unheard of! Best crew in Bath by a mile."
- Daniel Evans, Bath
"Cannot recommend them enough for loft conversions in Bath. They handled all the planning permission and the build was smooth."
- Sarah Jenkins, Bath
Loft conversion costs in Bath vary based on type, size, and specifications. Typical Bath 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 Bath quotes include structural work, insulation, electrics, plastering, and building control fees. Contact us for a free Bath survey and detailed quote.
A transparent guide to typical conversion costs in the Bath 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 Bath properties and subject to survey.
Senior Structural Specialist
"I oversee all loft conversions in the Bath 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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View All Case StudiesGet the extra space you need without the stress of moving. Expert advice for Bath families.
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