A professionally managed loft conversion in Wimbledon is a proven method to add significant living space and increase your property’s value by up to 20%. As local loft conversion specialists with over two decades of experience, we deliver a complete design and build service for your attic conversion in Wimbledon, handling everything from planning with Merton Council to the final build, typically in 8-12 weeks.
Loft Conversions Wimbledon
Interested in Wimbledon Loft Conversions? Contact Us Today
What are the Best Loft Conversion Types for Wimbledon Homes?
Wimbledon’s diverse property landscape, from Victorian terraces to semi-detached family homes, is perfectly suited for several types of conversions. We can recommend the ideal solution for your home.
- Dormer Loft Conversion: The most popular choice in Wimbledon. A dormer is a structural extension that projects vertically from the roof, creating a box shape with ample headroom and floor space, ideal for a new master suite.
- L-Shaped Dormer Conversion: Perfect for Edwardian and Victorian properties, this connects two dormer conversions to form an ‘L’ shape, dramatically increasing space.
- Velux (Skylight) Conversion: The most cost-effective attic conversion Wimbledon homeowners can choose. Skylights are fitted flush into the existing roofline, requiring minimal structural change.
- Hip-to-Gable Conversion: An excellent solution for detached or end-of-terrace homes, replacing a sloped ‘hip’ roof with a vertical ‘gable’ wall to maximise the internal area.

Key Takeaways
What it is: Transform your unused attic into a functional, light-filled room like a bedroom, home office, or en-suite bathroom.
Why do it: Add valuable living space without moving, and boost your property’s market value.
Who it’s for: Homeowners and landlords in Wimbledon and South West London.
Typical Timeline: Most loft conversions in Wimbledon are completed within 8–12 weeks.
Have your say…
Testimonials
Case Study: Dormer Loft Conversion in Wimbledon
We transformed a loft in a family home into a spacious master bedroom and a modern en-suite bathroom. The project included large Velux windows for maximum natural light and was completed on time and on budget, adding significant value and functional space for the growing family.
The work was completed so quickly to a very high standard. Paul and Dangis were great with communication throughout and helped resolve any potential issues with building control and surrounding the party wall award.
I wouldn't hesitate to use them again and would definitely recommend their services!"
– Charlotte Field (Review via Trustpilot)

Posted on Andy Brown19/02/2026Trustindex verifies that the original source of the review is Google. From the initial meeting to the final finishing touch, Paul, Dangis and their team were great! We knew exactly what to expect each week, we had lots of photos and drone videos of work happening when we couldn’t see. They were full of advice and suggestions when we couldn’t visualise the end result. They left our home as clean and as tidy as they possibly could (we were living in the house as they were working around us). We are really pleased with the end result and with the building experience! Great time, fantastic work ethic and brilliant result!Posted on Rebecca Barrett15/12/2025Trustindex verifies that the original source of the review is Google. We can’t thank Paul, Dangis, and the team, enough for their hard work on our house. The house is everything we had imagined and more. We increased our scope multiple times throughout the process, and the team helped us seamlessly, and were always there to answer questions and support our plans. We only have good things to say about Clapham Construction, and will definitely be recommending them to all our friends and family. Thanks again!Posted on Helen Stevens03/09/2025Trustindex verifies that the original source of the review is Google. I cannot speak highly enough of Clapham Construction. Paul and Dangis were a dream to work with from start to finish. Everything was communicated so well and they provided honest, transparent and clear advice throughout; I felt supported and guided through all the decisions and they helped me make more bespoke decisions such as our windows and floor which weren’t necessarily easy! Everyone who came to work on the loft was excellent and it has all been completed to a high standard. The loft is beautiful and we just can’t believe how much space we have and how well done everything is. I would (and have!) recommend to anyone! Thank you Paul and Dangis - and we will be coming straight back to you for the next project!Posted on Georgia Beales01/08/2025Trustindex verifies that the original source of the review is Google. We’ve had our dormer loft conversion for coming up to three years now and haven’t had any major issues in this time. Any minor snagging issues have been dealt with quickly by Clapham. The whole process from start to finish was seamless. All the builders were very friendly and considerate too. Will continue to recommend this company to anyone who needs a loft done and will not hesitate to use again in the future. Thank you!Posted on Danilo Rico07/07/2025Trustindex verifies that the original source of the review is Google. Clapham construction service was extremely professional, the project was finished before the plan and we are so happy with our new space. Problems were resolved quickly and efficiently throughout the process. This was one of our best investment that not only added value to our property but also a significant improve of our quality of life.Posted on Joel Prime02/07/2025Trustindex verifies that the original source of the review is Google. I had a loft conversion completed by Clapham Construction Service earlier this year and couldn't be happier with the results. Paul and Dangis were on site every day and kept me fully informed throughout the entire process. Their communication, professionalism, and attention to detail were outstanding. I felt completely confident in their work from start to finish. Highly recommended for anyone looking for reliable and high-quality building services.Posted on Jane Ansell08/05/2025Trustindex verifies that the original source of the review is Google. We recently completed a double mansard loft conversion with Clapham Construction Service, and were very happy with the whole design and build process from start to finish. Paul and Dangis were great to work with, providing clear communication and always being available to answer questions or discuss options. Their team are also excellent, with all the trades doing a great job, very professional and respectful of the rest of our house. Inevitably with a build project there were a couple of issues that cropped up along the way, but CCS were excellent at helping resolve them. We are delighted with the final loft and the extra space, and have already recommended them to others!Posted on Jamie Garratt24/01/2025Trustindex verifies that the original source of the review is Google. We have just completed a loft conversion with Clapham Construction and it was great! We are so pleased with the new loft we have in our house, but the process of working with CC was really good. They were easy to engage with from the outset, the price was competitive and the actual construction was quick and efficient. Obviously it was a major building project with all the mess and decisions you’d expect, but it was made a lot easier and less stressful working with Paul, Dangis and the team. They completed the project on time and on budget and we enjoyed working with them - that is more than almost anyone we know can say about similar projects! We’d definitely recommend them.Posted on Christina Ansong16/10/2024Trustindex verifies that the original source of the review is Google. We had an exceptional experience with Clapham Construction for our loft conversion. Paul, Dangis, and the whole team were fantastic from start to finish. They transformed our attic into two beautiful loft rooms and a bathroom, exceeding our expectations with their attention to detail. The entire project was completed at an impressive speed without compromising quality. The team showed great care throughout, ensuring everything was done to the highest standard. Their service was professional, friendly, and stress-free. We’re absolutely thrilled with the results and would highly recommend Clapham Construction!Posted on Ayan Sengupta31/08/2024Trustindex verifies that the original source of the review is Google. We have recently used Clapham Construction Services for loft conversion to add a bedroom and a bath in the house. We are very happy with the end-to-end experience with Paul, Dangis and the entire CCS team for high quality work done in quick time and with a very collaborative approach. Our overall project went into some unexpected blockers, but Paul and Dangis patiently helped us to resolve all the matters, kept us updated with timely communication and have been very flexible to guide us. They brought in a fantastic team to complete the work fast and in a cost-efficient manner. We will recommend CCS any day as a trusted team for home transformation projects.Google rating score: 5.0 of 5, based on 83 reviews
Interested in Wimbledon Attic Conversions? Contact Us Today
Do I Need Planning Permission for a Loft Conversion in Wimbledon?
Many loft conversions fall under ‘Permitted Development’ (PD) rights and do not require a full planning application. However, these rights are subject to strict limits, and permission is often required for properties in conservation areas. Our team has extensive experience with the London Borough of Merton’s planning department and will manage all necessary building regulations and applications for you.
How Much Does a Loft Conversion Cost in Wimbledon?
- Velux / roof-light: £50k–£60k
- Hip to Gable with Rear Dormer: £48k–£60k
- L-shaped dormer: £55k–£70k
- Mansard loft conversion: £65k–£85k
All prices include design, structural calculations and building-control fees. A no-obligation site survey confirms the exact cost.
Loft Conversion Complete Process
Free consultation & laser survey → Fixed-price proposal within 72 hours → Architectural drawings + Merton Council PD/planning paperwork → Structural engineer, party-wall and build-over agreements (if needed) → 8-10 week build with weekly client walkthroughs → Completion pack: building-control certificate, electrical test report & ten-year warranty.
For more information about costs of loft conversions, use our loft price calculator, and take a look at our in-depth loft conversion cost guide.
View Our Design and Build Process
Check out the work of our amazing teams and what we can achieve in your home
Ready For An Exact Figure For Your Loft Conversions
Book your free on-site survey and receive a fixed-price quotation within 72 hours. Call 020 3950 7957 or email [email protected].
Your Trusted, Local Wimbledon Conversion Specialists
With over 20 years of experience, we are one of the leading loft conversion companies serving Wimbledon. Our reputation is built on delivering exceptional quality and a transparent, professional service.
If you’d like more information on loft conversions in Wimbledon and how we can help you, please don’t hesitate to contact us today. Our team have an incredible amount of knowledge within this specific area so regardless of what you’re looking to achieve with your loft conversion and the style of home you have, we can make it happen. Simply call us today on 0203 950 7957.
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Ready to Begin Your Wimbledon Loft Conversion?
Your ideal living space is just one conversation away. Contact our specialists today to discuss your loft conversion in Wimbledon and arrange a free, no-obligation site survey and a detailed, fixed-price quote.


