Specializing in complex loft projects across High Wycombe. Whether you need a simple Velux install or a full hip-to-gable conversion, we can help.
Get Your Free High Wycombe QuoteSee what your High Wycombe neighbours say about our loft conversion work.
"The structural work was done quickly and safely. As a High Wycombe local, I appreciated their knowledge of local planning rules."
"We were worried about the disruption, but the team at Building Group were incredibly considerate of our home in High Wycombe."
"Building Group turned my scary spider attic into a 5-star hotel suite. My guests in High Wycombe never want to leave!"
"The best decision we made for our High Wycombe house. The extra office space is perfect. Great attention to detail from the whole team."
"Exceptional value for money. We got quotes from three High Wycombe firms and Building Group offered the best spec for the price."
"Professional service from start to finish. Our hip-to-gable conversion has added so much space to our High Wycombe home. Quality workmanship."
See more genuine High Wycombe customer reviews and loft conversion project galleries.
Read More ReviewsTransform your High Wycombe 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 High Wycombe, we create bespoke solutions tailored to your lifestyle.
Our experienced High Wycombe team handles every aspect of your loft conversion project. From initial design and planning permission through to final decoration, we ensure your High Wycombe conversion maximizes space, natural light, and property value.
Choose the perfect conversion type for your High Wycombe property to maximize space and value
The most cost-effective option for High Wycombe properties using roof windows for natural light. Perfect for High Wycombe homes with adequate headroom.
Add valuable floor space and headroom to your High Wycombe property with single or multiple dormers. Popular choice in High Wycombe for space optimization.
Transform sloping hip roofs into vertical gable walls in your High Wycombe home, significantly increasing usable floor space. Ideal for High Wycombe semi-detached properties.
The premium option for High Wycombe properties creating maximum space with near-vertical walls. Perfect for period properties in High Wycombe.
Your High Wycombe property needs minimum 2.3m headroom at the highest point and sufficient floor area for conversion. Our High Wycombe specialists provide free assessments to determine if your loft is suitable and advise on the best conversion type for your High Wycombe property and budget. Most High Wycombe conversions fall under permitted development rights, but we handle all planning and building regulations applications where required.
Most terraced and semi-detached homes in High Wycombe 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 High Wycombe housing stock.
Living in a terraced or semi-detached house in High Wycombe? We manage the Party Wall Notice process with your neighbors to ensure works can start on time.
Comprehensive evaluation of your High Wycombe loft space, structural assessment, and advice on the best conversion type for your property.
Architectural drawings, 3D visualizations, and planning permission applications for High Wycombe properties. We handle all regulatory approvals.
Steel beam installation, floor strengthening, and staircase construction by qualified High Wycombe engineers.
Velux roof windows, dormer construction, and window installations to maximize natural light in High Wycombe homes.
Complete bathroom installations including plumbing, electrical work, and luxury fixtures in your High Wycombe loft.
Plastering, decorating, flooring, and interior design services to create beautiful High Wycombe living spaces.
Professional space assessment
Architectural drawings and approvals
Professional loft specialists
Professional loft conversions throughout High Wycombe city centre, including period properties, modern homes, and conservation areas requiring specialist High Wycombe planning expertise.
Expert loft conversion services across all High Wycombe suburban areas. Specializing in semi-detached, detached, and terraced properties throughout High Wycombe.
Specialist conversions for High Wycombe's Victorian, Edwardian, and period properties. Sympathetic designs maintaining character while maximizing space.
Expert handling of High Wycombe conservation area requirements. We navigate planning restrictions and create beautiful conversions that comply with local regulations.
High Wycombe Loft Conversions Completed
Average High Wycombe Customer Rating
Years Serving High Wycombe
High Wycombe Building Control Approved
With over 15 years of experience in High Wycombe, we understand local planning requirements, building regulations, and architectural styles. Our High Wycombe team delivers exceptional loft conversions that enhance your property value.
Hip-to-gable conversion creating master bedroom with ensuite in a Victorian High Wycombe terrace. Added 30sqm of living space.
Project Value: £48,000
Dormer loft conversion in modern High Wycombe semi-detached. Created two bedrooms and bathroom for growing family.
Project Value: £42,000
Mansard conversion in High Wycombe conservation area. Luxury master suite with dressing room and ensuite.
Project Value: £65,000
"The structural work was done quickly and safely. As a High Wycombe local, I appreciated their knowledge of local planning rules."
- Helen Baker, High Wycombe
"We were worried about the disruption, but the team at Building Group were incredibly considerate of our home in High Wycombe."
- Emily Lewis, High Wycombe
"Building Group turned my scary spider attic into a 5-star hotel suite. My guests in High Wycombe never want to leave!"
- Sarah Jenkins, High Wycombe
Loft conversion costs in High Wycombe vary based on type, size, and specifications. Typical High Wycombe 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 High Wycombe quotes include structural work, insulation, electrics, plastering, and building control fees. Contact us for a free High Wycombe survey and detailed quote.
A transparent guide to typical conversion costs in the High Wycombe 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 High Wycombe properties and subject to survey.
Senior Structural Specialist
"I oversee all loft conversions in the High Wycombe 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 StudiesTake the first step towards a bigger, better home. Contact our High Wycombe team for friendly advice.
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