Create the home you've always wanted. Our Slough loft experts turn dark, dusty attics into bright, functional, and beautiful rooms.
Get Your Free Slough QuoteSee what your Slough neighbours say about our loft conversion work.
"We were worried about the disruption, but the team at Building Group were incredibly considerate of our home in Slough."
"Honest, reliable and skilled. Our mansard loft in Slough looks incredible. They finished exactly on budget."
"I was expecting dust everywhere, but they left my Slough house cleaner than they found it. Wizards, not builders!"
"If you want a loft in Slough, just book these guys. Seriously. Don't waste time with anyone else. Building Group is the real deal."
"I actually miss having the builders around! Friendly, funny, and polite team. They became part of the family during our Slough project."
"The 10-year guarantee gave us peace of mind. A trustworthy company serving the Slough area."
See more genuine Slough customer reviews and loft conversion project galleries.
Read More ReviewsTransform your Slough 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 Slough, we create bespoke solutions tailored to your lifestyle.
Our experienced Slough team handles every aspect of your loft conversion project. From initial design and planning permission through to final decoration, we ensure your Slough conversion maximizes space, natural light, and property value.
Choose the perfect conversion type for your Slough property to maximize space and value
The most cost-effective option for Slough properties using roof windows for natural light. Perfect for Slough homes with adequate headroom.
Add valuable floor space and headroom to your Slough property with single or multiple dormers. Popular choice in Slough for space optimization.
Transform sloping hip roofs into vertical gable walls in your Slough home, significantly increasing usable floor space. Ideal for Slough semi-detached properties.
The premium option for Slough properties creating maximum space with near-vertical walls. Perfect for period properties in Slough.
Your Slough property needs minimum 2.3m headroom at the highest point and sufficient floor area for conversion. Our Slough specialists provide free assessments to determine if your loft is suitable and advise on the best conversion type for your Slough property and budget. Most Slough conversions fall under permitted development rights, but we handle all planning and building regulations applications where required.
Most terraced and semi-detached homes in Slough 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 Slough housing stock.
Living in a terraced or semi-detached house in Slough? We manage the Party Wall Notice process with your neighbors to ensure works can start on time.
Comprehensive evaluation of your Slough loft space, structural assessment, and advice on the best conversion type for your property.
Architectural drawings, 3D visualizations, and planning permission applications for Slough properties. We handle all regulatory approvals.
Steel beam installation, floor strengthening, and staircase construction by qualified Slough engineers.
Velux roof windows, dormer construction, and window installations to maximize natural light in Slough homes.
Complete bathroom installations including plumbing, electrical work, and luxury fixtures in your Slough loft.
Plastering, decorating, flooring, and interior design services to create beautiful Slough living spaces.
Professional space assessment
Architectural drawings and approvals
Professional loft specialists
Professional loft conversions throughout Slough city centre, including period properties, modern homes, and conservation areas requiring specialist Slough planning expertise.
Expert loft conversion services across all Slough suburban areas. Specializing in semi-detached, detached, and terraced properties throughout Slough.
Specialist conversions for Slough's Victorian, Edwardian, and period properties. Sympathetic designs maintaining character while maximizing space.
Expert handling of Slough conservation area requirements. We navigate planning restrictions and create beautiful conversions that comply with local regulations.
Slough Loft Conversions Completed
Average Slough Customer Rating
Years Serving Slough
Slough Building Control Approved
With over 15 years of experience in Slough, we understand local planning requirements, building regulations, and architectural styles. Our Slough team delivers exceptional loft conversions that enhance your property value.
Hip-to-gable conversion creating master bedroom with ensuite in a Victorian Slough terrace. Added 30sqm of living space.
Project Value: £48,000
Dormer loft conversion in modern Slough semi-detached. Created two bedrooms and bathroom for growing family.
Project Value: £42,000
Mansard conversion in Slough conservation area. Luxury master suite with dressing room and ensuite.
Project Value: £65,000
"We were worried about the disruption, but the team at Building Group were incredibly considerate of our home in Slough."
- William Turner, Slough
"Honest, reliable and skilled. Our mansard loft in Slough looks incredible. They finished exactly on budget."
- George Adams, Slough
"I was expecting dust everywhere, but they left my Slough house cleaner than they found it. Wizards, not builders!"
- Joseph Clark, Slough
Loft conversion costs in Slough vary based on type, size, and specifications. Typical Slough 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 Slough quotes include structural work, insulation, electrics, plastering, and building control fees. Contact us for a free Slough survey and detailed quote.
A transparent guide to typical conversion costs in the Slough 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 Slough properties and subject to survey.
Senior Structural Specialist
"I oversee all loft conversions in the Slough 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.
Want to see the rest of our portfolio?
View All Case StudiesWe are working in Slough right now. Call us to arrange a viewing of our current projects near you.
Book Free Slough Loft Survey