A professionally managed loft conversion in Croydon can increase your property’s value by 15–20% and is a cost-effective way to gain significant living space without moving. As local Croydon specialists, we deliver a complete design and build service, navigating Croydon’s specific planning regulations to transform your attic into a valuable, functional room. The average project takes between 4 and 12 weeks to complete.
Loft Conversions Croydon
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What are the Best Loft Conversion Types for Croydon Homes?
Croydon’s diverse architecture is suitable for several types of loft conversions. We can recommend the ideal solution for your property, whether it’s a terraced, semi-detached, or detached house.
- Dormer Loft Conversion: The most popular choice in Croydon, a dormer extends vertically from the roof, creating a box shape with ample headroom and floor space. It is highly versatile and suitable for most property types.
- Hip-to-Gable Loft Conversion: This is the perfect solution for end-of-terrace or detached homes. The sloped ‘hip’ side of the roof is replaced with a vertical ‘gable’ wall, maximising the interior space.
- Velux (Skylight) Conversion: This is the most cost-effective and least disruptive option. It involves fitting skylight windows into the existing roofline without altering its structure, making it ideal for brightening up an attic space.
Key Takeaways
What it is: A project to convert your unused loft into a modern living area, such as a bedroom, home office, or playroom.
Why do it: Adds substantial market value and usable space to your property more affordably than a home extension.
Who it's for: Homeowners and landlords throughout the London Borough of Croydon.
Typical Timeline: A standard loft conversion in Croydon is typically finished within 8–10 weeks.
Have your say…
Testimonials
Case Study: Dormer Loft Conversion in Purley, CR8
For a family in a 1930s semi-detached house in Purley, we designed and built a large rear dormer conversion. The project created a spacious master bedroom and a modern en-suite bathroom, finished in just 10 weeks. This added an estimated £95,000 to the home's market value.
– The Davies Family, Purley

Posted on Nicholas Carpenter12/04/2023Trustindex verifies that the original source of the review is Google. Clapham Construction have done a great job on our loft conversion and we are very pleased with how smoothly the project went, and the brilliant loft space that we now have. Paul - thank you especially for guiding us through all the stages before and during the build. Their workmen were hard working from start to finish, efficient, and obviously very skilled. They were also polite, helpful and really tidy. We had great communication by email with their office, and with Paul in person and on the WhatsApp group - thank you. Our family in USA are now looking forward to staying with us in comfort this summer and beyond!Posted on Bianca Hamilton16/03/2023Trustindex verifies that the original source of the review is Google. Paul, Dangis and the team are simply top notch. They did such a high-quality job on a tight timeframe and communicated so well throughout. They were a pleasure to work with, handled all elements of the build from start to finish and kept disruption as minimal as they could. Couldn’t recommend them more highly if I tried.Posted on Mindy Lee29/01/2023Trustindex verifies that the original source of the review is Google. Thank you Clapham Construction! Your team were friendly, efficient, and highly motivated. The project ran to schedule with effective overlapping of tasks to allow for minimum disruption. Paul kept us actively involved at each stage of the process, so we always knew what was happening when, which was really reassuring. If we ever had a question, he would talk it through with us in person and offer advice without any pressure or expectation. The work is completed to an excellent standard. All the construction workers where kind, considerate, friendly, polite and kept our house as clean and tidy as possible. This took so much of the stress out of living on site during the works with a young son. Even the neighbours commented on how polite and considerate the builders had been. We would highly recommend this team for anyone thinking of undertaking a loft conversion in the future.Posted on Shayan Bokhari29/12/2022Trustindex verifies that the original source of the review is Google. Paul, Dangis and their team were excellent given we had some obstacles with the council on design, they accommodated what we required. The work was very professional and communication was on point. We are very happy with our end result and any teething issues they resolved quickl. I would recommend the team to anyone. Thanks again for all your hard work.Posted on Laila A29/12/2022Trustindex verifies that the original source of the review is Google. Really lovely team - all professional, friendly and was great to have Dangis and Paul popping in regularly and being on the ball with the project. Happy with our new loft, all work done to an excellence standard, any follow up questions or issues dealt with quickly. Would highly recommend. Thank you very much.Posted on Dani Carter25/10/2022Trustindex verifies that the original source of the review is Google. Absolute professionals is the first thing that comes to mind when I think of Clapham Construction service. And there are two further things you need to know about them: they are brilliant at what they do and they are generous in spirit. Throughout our project Paul and Dangis answered our naive questions with warmth and care. They helped guide us at every turn, and almost certainly saved us money by making sure we considered all the options we had before making key decisions. But not just customer care, the building work is also top notch. The build itself was a well oiled process, coordinated with skill. I was initially worried about getting an anonymous loft company I'd never heard of in (after getting 8 different quotes from a variety of places including famous local ones) and being part of the 'box on the roof' brigade. Yet somehow, they have created build magic with some tweaks on 'a little bit of height' here, and 'a little configuration' there. We keep marvelling at the sturdiness and smoothness of the physical build even now, and the army of highly skilled teams they have were a pleasure to host in the house while we worked from home. And finally the most important bit - the money stuff- our Loft extension (including bathroom) was completed on time and more or less on budget. The additional costs were the unforseen - (yikes a victorian chimney needs dismantling!) and a few flourishes that we ourselves added to the mix - (can the door handles be gold?). Any additional build costs were communicated efficiently and immediately. Our experience of Clapham Construction is that they are patient, hugely knowledgable, and detail orientated with a wealth of incredible advice. Don't delay on getting them on your project!Posted on Mikey Johns22/09/2022Trustindex verifies that the original source of the review is Google. We spoke to a few companies to quote our dormer loft conversion but were immediately impressed speaking to Dangis & Paul and went with Clapham CS. We’re really happy with the end result which has given us some much needed extra space. Progress was quick, these guys are very experienced and know exactly what they’re doing. They’ll talk you through your plans and give you honest advice at key stages when you need to make a decision, very patient with us too! Would definitely recommend, they’ve done numerous houses in our neighbouring streets too, end results always look great.Posted on Maria Luisa McKendry18/09/2022Trustindex verifies that the original source of the review is Google. Highly recommend this company. As first time buyers and first time renovators we couldn't be happier with their service. Paul and Dangis are very professional and thorough, at no times does it feel like corners are cut. They are able to provide genuine advice and guidance while being accommodating ensuring a stress free process.Posted on Stuart Williams18/09/2022Trustindex verifies that the original source of the review is Google. Clapham Construction completed our kitchen extension for us. We’re really pleased with the results, and it has changed the whole place. The price was agreed upfront and there were no hidden extras. Good communication throughout the whole process on WhatsApp and Dan showed great building experience. They had the whole team from build, kitchen fitting through to finishing the garden off available in house so made it a lot easier. Thanks guys.Posted on Tom Forman05/09/2022Trustindex verifies that the original source of the review is Google. We are delighted with our new loft conversion, Clapham Construction did a great job. They were highly professional, no hidden costs, and with friendly employees who treated the rest of the house with respect. We would not hesitate to recommend them.Google rating score: 5.0 of 5, based on 54 reviews
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How Much Does a Loft Conversion Cost in Croydon?
The cost of a loft conversion in Croydon depends on the project’s size, type, and complexity. On average, you can expect to invest between £32,000 and £52,000.
- Velux Conversions: Average cost is around £50,500.
- Dormer Conversions: Typically cost about £45,000.
- Hip-to-Gable Conversions: Prices range from £40,000 to £65,000.
Do I Need Planning Permission for a Loft Conversion in Croydon?
In many cases, a loft conversion in Croydon falls under ‘Permitted Development’ rights, meaning a full planning application is not required. However, these rights have strict limits, and permission is typically needed if your property is a listed building or located in one of Croydon’s conservation areas. Our experienced team manages this entire process, handling any necessary applications with the local council to ensure full compliance.
Your Trusted, Local Croydon Experts
With decades of experience, we are a leading loft conversion company serving Croydon and the surrounding areas. Our reputation is built on outstanding results and reliable service.
- Fully Certified & Compliant: All our work strictly adheres to UK Building Regulations to ensure structural safety and energy efficiency.
- 10-Year Guarantee: Every loft conversion is backed by a ten-year warranty for your complete peace of mind.
- Fully Insured: We carry comprehensive public liability insurance.
- Transparent Process: We manage every stage of the project, from the initial architectural drawings to the final touches, ensuring you are kept informed throughout.
Loft Conversion Complete Process
Survey & quote → Planning/PD checks with Croydon Council → Structural engineering and party-wall support → Average 9-week build overseen by your project manager → Building-control certificate, snag-free handover & warranty pack.
We provide a detailed, fixed-price quote following a free and comprehensive site survey.
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 Croydon Conversion Specialists
With over 20 years of experience, we are one of the leading loft conversion companies serving Croydon. Our reputation is built on delivering exceptional quality and a transparent, professional service.
If you’d like more information on loft conversions in Croydon 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.
View Our Work in Croydon
Ready to Begin Your Croydon Loft Conversion?
Your ideal living space is just one conversation away. Contact our specialists today to discuss your loft conversion in Croydon and arrange a free, no-obligation site survey and quote.

