Don't compromise on quality. Our Olney loft specialists use only premium materials and fully qualified tradespeople for your peace of mind.
Get Your Free Olney QuoteSee what your Olney neighbours say about our loft conversion work.
"Top quality dormer conversion. Added significant value to our Olney property. Friendly team and very clean working environment."
"They finished ahead of schedule! In the building trade! Unheard of! Best crew in Olney by a mile."
"Building Group were the only company to spot a potential issue with our chimney in Olney and solved it before starting. True experts."
"The neighbors are jealous, the kids are happy, and the house value went up. The trifecta! Best investment in Olney."
"I actually miss having the builders around! Friendly, funny, and polite team. They became part of the family during our Olney project."
"Great experience from the quote to the final sign-off. The project manager kept us updated every week on our Olney build."
See more genuine Olney customer reviews and loft conversion project galleries.
Read More ReviewsTransform your Olney 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 Olney, we create bespoke solutions tailored to your lifestyle.
Our experienced Olney team handles every aspect of your loft conversion project. From initial design and planning permission through to final decoration, we ensure your Olney conversion maximizes space, natural light, and property value.
Choose the perfect conversion type for your Olney property to maximize space and value
The most cost-effective option for Olney properties using roof windows for natural light. Perfect for Olney homes with adequate headroom.
Add valuable floor space and headroom to your Olney property with single or multiple dormers. Popular choice in Olney for space optimization.
Transform sloping hip roofs into vertical gable walls in your Olney home, significantly increasing usable floor space. Ideal for Olney semi-detached properties.
The premium option for Olney properties creating maximum space with near-vertical walls. Perfect for period properties in Olney.
Your Olney property needs minimum 2.3m headroom at the highest point and sufficient floor area for conversion. Our Olney specialists provide free assessments to determine if your loft is suitable and advise on the best conversion type for your Olney property and budget. Most Olney conversions fall under permitted development rights, but we handle all planning and building regulations applications where required.
Most terraced and semi-detached homes in Olney 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 Olney housing stock.
Living in a terraced or semi-detached house in Olney? We manage the Party Wall Notice process with your neighbors to ensure works can start on time.
Comprehensive evaluation of your Olney loft space, structural assessment, and advice on the best conversion type for your property.
Architectural drawings, 3D visualizations, and planning permission applications for Olney properties. We handle all regulatory approvals.
Steel beam installation, floor strengthening, and staircase construction by qualified Olney engineers.
Velux roof windows, dormer construction, and window installations to maximize natural light in Olney homes.
Complete bathroom installations including plumbing, electrical work, and luxury fixtures in your Olney loft.
Plastering, decorating, flooring, and interior design services to create beautiful Olney living spaces.
Professional space assessment
Architectural drawings and approvals
Professional loft specialists
Professional loft conversions throughout Olney city centre, including period properties, modern homes, and conservation areas requiring specialist Olney planning expertise.
Expert loft conversion services across all Olney suburban areas. Specializing in semi-detached, detached, and terraced properties throughout Olney.
Specialist conversions for Olney's Victorian, Edwardian, and period properties. Sympathetic designs maintaining character while maximizing space.
Expert handling of Olney conservation area requirements. We navigate planning restrictions and create beautiful conversions that comply with local regulations.
Olney Loft Conversions Completed
Average Olney Customer Rating
Years Serving Olney
Olney Building Control Approved
With over 15 years of experience in Olney, we understand local planning requirements, building regulations, and architectural styles. Our Olney team delivers exceptional loft conversions that enhance your property value.
Hip-to-gable conversion creating master bedroom with ensuite in a Victorian Olney terrace. Added 30sqm of living space.
Project Value: £48,000
Dormer loft conversion in modern Olney semi-detached. Created two bedrooms and bathroom for growing family.
Project Value: £42,000
Mansard conversion in Olney conservation area. Luxury master suite with dressing room and ensuite.
Project Value: £65,000
"Top quality dormer conversion. Added significant value to our Olney property. Friendly team and very clean working environment."
- Robert Smith, Olney
"They finished ahead of schedule! In the building trade! Unheard of! Best crew in Olney by a mile."
- Robert Smith, Olney
"Building Group were the only company to spot a potential issue with our chimney in Olney and solved it before starting. True experts."
- Robert Smith, Olney
Loft conversion costs in Olney vary based on type, size, and specifications. Typical Olney 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 Olney quotes include structural work, insulation, electrics, plastering, and building control fees. Contact us for a free Olney survey and detailed quote.
A transparent guide to typical conversion costs in the Olney 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 Olney properties and subject to survey.
Senior Structural Specialist
"I oversee all loft conversions in the Olney 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 StudiesThe only way is up, baby! Let's raise the roof on your Olney property today.
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