Turn that dusty, dark void above your head into cash in your pocket. A Building Group loft conversion is the smartest investment in Cambridge.
Get Your Free Cambridge QuoteSee what your Cambridge neighbours say about our loft conversion work.
"I actually miss having the builders around! Friendly, funny, and polite team. They became part of the family during our Cambridge project."
"Building Group transformed our Cambridge property's unused loft into two beautiful bedrooms. Excellent communication throughout and competitive pricing."
"The structural work was done quickly and safely. As a Cambridge local, I appreciated their knowledge of local planning rules."
"Fantastic loft conversion in our Cambridge home. The team was professional, tidy, and finished on time. Our new master bedroom with ensuite is stunning."
"Building Group provided excellent advice on the best layout for our Cambridge terrace. The result is better than we imagined."
"We were worried about the disruption, but the team at Building Group were incredibly considerate of our home in Cambridge."
See more genuine Cambridge customer reviews and loft conversion project galleries.
Read More ReviewsTransform your Cambridge 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 Cambridge, we create bespoke solutions tailored to your lifestyle.
Our experienced Cambridge team handles every aspect of your loft conversion project. From initial design and planning permission through to final decoration, we ensure your Cambridge conversion maximizes space, natural light, and property value.
Choose the perfect conversion type for your Cambridge property to maximize space and value
The most cost-effective option for Cambridge properties using roof windows for natural light. Perfect for Cambridge homes with adequate headroom.
Add valuable floor space and headroom to your Cambridge property with single or multiple dormers. Popular choice in Cambridge for space optimization.
Transform sloping hip roofs into vertical gable walls in your Cambridge home, significantly increasing usable floor space. Ideal for Cambridge semi-detached properties.
The premium option for Cambridge properties creating maximum space with near-vertical walls. Perfect for period properties in Cambridge.
Your Cambridge property needs minimum 2.3m headroom at the highest point and sufficient floor area for conversion. Our Cambridge specialists provide free assessments to determine if your loft is suitable and advise on the best conversion type for your Cambridge property and budget. Most Cambridge conversions fall under permitted development rights, but we handle all planning and building regulations applications where required.
Most terraced and semi-detached homes in Cambridge 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 Cambridge housing stock.
Living in a terraced or semi-detached house in Cambridge? We manage the Party Wall Notice process with your neighbors to ensure works can start on time.
Comprehensive evaluation of your Cambridge loft space, structural assessment, and advice on the best conversion type for your property.
Architectural drawings, 3D visualizations, and planning permission applications for Cambridge properties. We handle all regulatory approvals.
Steel beam installation, floor strengthening, and staircase construction by qualified Cambridge engineers.
Velux roof windows, dormer construction, and window installations to maximize natural light in Cambridge homes.
Complete bathroom installations including plumbing, electrical work, and luxury fixtures in your Cambridge loft.
Plastering, decorating, flooring, and interior design services to create beautiful Cambridge living spaces.
Professional space assessment
Architectural drawings and approvals
Professional loft specialists
Professional loft conversions throughout Cambridge city centre, including period properties, modern homes, and conservation areas requiring specialist Cambridge planning expertise.
Expert loft conversion services across all Cambridge suburban areas. Specializing in semi-detached, detached, and terraced properties throughout Cambridge.
Specialist conversions for Cambridge's Victorian, Edwardian, and period properties. Sympathetic designs maintaining character while maximizing space.
Expert handling of Cambridge conservation area requirements. We navigate planning restrictions and create beautiful conversions that comply with local regulations.
Cambridge Loft Conversions Completed
Average Cambridge Customer Rating
Years Serving Cambridge
Cambridge Building Control Approved
With over 15 years of experience in Cambridge, we understand local planning requirements, building regulations, and architectural styles. Our Cambridge team delivers exceptional loft conversions that enhance your property value.
Hip-to-gable conversion creating master bedroom with ensuite in a Victorian Cambridge terrace. Added 30sqm of living space.
Project Value: £48,000
Dormer loft conversion in modern Cambridge semi-detached. Created two bedrooms and bathroom for growing family.
Project Value: £42,000
Mansard conversion in Cambridge conservation area. Luxury master suite with dressing room and ensuite.
Project Value: £65,000
"I actually miss having the builders around! Friendly, funny, and polite team. They became part of the family during our Cambridge project."
- James Walker, Cambridge
"Building Group transformed our Cambridge property's unused loft into two beautiful bedrooms. Excellent communication throughout and competitive pricing."
- Maria Garcia, Cambridge
"The structural work was done quickly and safely. As a Cambridge local, I appreciated their knowledge of local planning rules."
- Charlotte Robinson, Cambridge
Loft conversion costs in Cambridge vary based on type, size, and specifications. Typical Cambridge 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 Cambridge quotes include structural work, insulation, electrics, plastering, and building control fees. Contact us for a free Cambridge survey and detailed quote.
A transparent guide to typical conversion costs in the Cambridge 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 Cambridge properties and subject to survey.
Senior Structural Specialist
"I oversee all loft conversions in the Cambridge 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 StudiesDon't move, improve! Let our specialists design the perfect loft conversion for your Cambridge home.
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