Loft Conversion Builder London
Turn your unused attic space into something amazing with FOX HOME BUILDERS & DOUBLE GLAZING, your trusted loft conversion builder in London. Whether you need a new bedroom, home office, or a stylish en-suite, we design and build bespoke loft conversions that add space, value, and comfort to your home.
Professional Loft Conversions Across London
Loft conversions are one of the most cost-effective ways to extend your living space without sacrificing garden area. At FOX HOME BUILDERS, we bring years of experience in transforming London lofts into stunning.
We specialise in home building services across North, East, South, and West London, including expert extensions, loft conversions, and new builds. Explore our full range of services by visiting our Home Building page to discover how we can transform your property.
We specialise in:
- Dormer Loft Conversions
- Velux (Rooflight) Conversions
- Mansard Conversions
- Hip to Gable Conversions
- L-Shaped Loft Conversions
Why Choose Us as Your Loft Conversion Builder in London?
Skilled & Certified Builders
Full Design-to-Completion Service
Planning Permission & Building Regulations Support
Transparent Quotes – No Hidden Fees
Clean, Safe, and Timely Work
100% Customer Satisfaction Guaranteed
Our team handles everything from architectural design and structural planning to electrical work, insulation, flooring, and final finish. We manage your entire project with precision, so you can sit back and enjoy your new space stress-free.
Planning Permission & Regulations, Serving Homes Across London.
Most loft conversions in London fall under permitted development, but we’ll help you confirm what's required. If planning permission is needed, we’ll take care of the paperwork and liaise with your local council to make sure everything runs smoothly and legally.
Our Double Glazing division offers premium aluminium and uPVC solutions. As trusted double glazing suppliers and manufacturers in London, we deliver quality and performance you can rely on.
No matter where you are in London, FOX HOME BUILDERS & DOUBLE GLAZING is your reliable partner for quality loft conversions.
Frequently Asked Questions
In many cases, no. Most loft conversions fall under Permitted Development Rights, which means you won’t need planning permission if the work meets specific criteria. However, if your home is in a conservation area or the conversion exceeds certain limits, permission may be required. We’ll assess your situation and handle all the necessary permissions and paperwork for you.
The timeline depends on the type and complexity of the conversion:
- Velux Conversions: 3–5 weeks
- Dormer or Hip to Gable: 6–8 weeks
- Mansard or L-Shaped: 8–10+ weeks
We’ll give you a clear schedule and regular progress updates throughout the project.
It depends on your roof shape, available space, and what you want to use the new room for. We offer free consultations to evaluate your loft and recommend the best type—whether it’s a Dormer, Velux, Mansard, or L-Shaped conversion. We always tailor the design to your home and needs.
Yes—loft conversions are one of the best ways to increase your home’s value. On average, a well-built loft conversion can add up to 20% to your property's market value, especially in London where space is at a premium.
We offer a full end-to-end service, including:
✔️ Architectural Design & Structural Engineering
✔️ Planning Permission & Building Regs
✔️ Steel Installation & Flooring
✔️ Insulation, Windows & Roofing
✔️ Electrics, Plumbing & Plastering
✔️ Final Finishes (Paint, Flooring, Fixtures)
Everything is managed by our expert team so you can enjoy a smooth, stress-free experience.