Need extra space for a growing family? Our Marlow loft conversions provide the perfect solution, adding valuable square footage to your existing home.
Get Your Free Marlow QuoteSee what your Marlow neighbours say about our loft conversion work.
"Professional service from start to finish. Our hip-to-gable conversion has added so much space to our Marlow home. Quality workmanship."
"Honest, reliable and skilled. Our mansard loft in Marlow looks incredible. They finished exactly on budget."
"Fast, efficient, and friendly. Turned our dark Marlow attic into a bright, airy yoga studio. Thank you Building Group!"
"We are delighted with our Velux conversion in Marlow. The builders were respectful and the finish is high quality. Highly recommended."
"Great experience from the quote to the final sign-off. The project manager kept us updated every week on our Marlow build."
"The neighbors are jealous, the kids are happy, and the house value went up. The trifecta! Best investment in Marlow."
See more genuine Marlow customer reviews and loft conversion project galleries.
Read More ReviewsTransform your Marlow 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 Marlow, we create bespoke solutions tailored to your lifestyle.
Our experienced Marlow team handles every aspect of your loft conversion project. From initial design and planning permission through to final decoration, we ensure your Marlow conversion maximizes space, natural light, and property value.
Choose the perfect conversion type for your Marlow property to maximize space and value
The most cost-effective option for Marlow properties using roof windows for natural light. Perfect for Marlow homes with adequate headroom.
Add valuable floor space and headroom to your Marlow property with single or multiple dormers. Popular choice in Marlow for space optimization.
Transform sloping hip roofs into vertical gable walls in your Marlow home, significantly increasing usable floor space. Ideal for Marlow semi-detached properties.
The premium option for Marlow properties creating maximum space with near-vertical walls. Perfect for period properties in Marlow.
Your Marlow property needs minimum 2.3m headroom at the highest point and sufficient floor area for conversion. Our Marlow specialists provide free assessments to determine if your loft is suitable and advise on the best conversion type for your Marlow property and budget. Most Marlow conversions fall under permitted development rights, but we handle all planning and building regulations applications where required.
Most terraced and semi-detached homes in Marlow 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 Marlow housing stock.
Living in a terraced or semi-detached house in Marlow? We manage the Party Wall Notice process with your neighbors to ensure works can start on time.
Comprehensive evaluation of your Marlow loft space, structural assessment, and advice on the best conversion type for your property.
Architectural drawings, 3D visualizations, and planning permission applications for Marlow properties. We handle all regulatory approvals.
Steel beam installation, floor strengthening, and staircase construction by qualified Marlow engineers.
Velux roof windows, dormer construction, and window installations to maximize natural light in Marlow homes.
Complete bathroom installations including plumbing, electrical work, and luxury fixtures in your Marlow loft.
Plastering, decorating, flooring, and interior design services to create beautiful Marlow living spaces.
Professional space assessment
Architectural drawings and approvals
Professional loft specialists
Professional loft conversions throughout Marlow city centre, including period properties, modern homes, and conservation areas requiring specialist Marlow planning expertise.
Expert loft conversion services across all Marlow suburban areas. Specializing in semi-detached, detached, and terraced properties throughout Marlow.
Specialist conversions for Marlow's Victorian, Edwardian, and period properties. Sympathetic designs maintaining character while maximizing space.
Expert handling of Marlow conservation area requirements. We navigate planning restrictions and create beautiful conversions that comply with local regulations.
Marlow Loft Conversions Completed
Average Marlow Customer Rating
Years Serving Marlow
Marlow Building Control Approved
With over 15 years of experience in Marlow, we understand local planning requirements, building regulations, and architectural styles. Our Marlow team delivers exceptional loft conversions that enhance your property value.
Hip-to-gable conversion creating master bedroom with ensuite in a Victorian Marlow terrace. Added 30sqm of living space.
Project Value: £48,000
Dormer loft conversion in modern Marlow semi-detached. Created two bedrooms and bathroom for growing family.
Project Value: £42,000
Mansard conversion in Marlow conservation area. Luxury master suite with dressing room and ensuite.
Project Value: £65,000
"Professional service from start to finish. Our hip-to-gable conversion has added so much space to our Marlow home. Quality workmanship."
- Sarah Jenkins, Marlow
"Honest, reliable and skilled. Our mansard loft in Marlow looks incredible. They finished exactly on budget."
- Maria Garcia, Marlow
"Fast, efficient, and friendly. Turned our dark Marlow attic into a bright, airy yoga studio. Thank you Building Group!"
- Jessica Green, Marlow
Loft conversion costs in Marlow vary based on type, size, and specifications. Typical Marlow 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 Marlow quotes include structural work, insulation, electrics, plastering, and building control fees. Contact us for a free Marlow survey and detailed quote.
A transparent guide to typical conversion costs in the Marlow 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 Marlow properties and subject to survey.
Senior Structural Specialist
"I oversee all loft conversions in the Marlow 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 StudiesStop fighting over the bathroom! Add an ensuite to your Marlow loft and restore family peace.
Book Free Marlow Loft Survey