A professionally executed loft conversion in Dartford is an excellent investment, adding significant living space and boosting your property’s value. As local specialists, we provide a complete design-and-build service that navigates Dartford’s specific planning requirements to create a seamless attic conversion. Projects are typically completed in 8 to 11 weeks.
Loft Conversions Dartford
Interested in Loft Conversions Dartford? Contact Us Today
What Loft Conversion Types Suit Dartford Properties?
Dartford’s housing stock is varied, making it suitable for several conversion types. We help you choose the best option for your home’s style and your family’s needs.
- Dormer Loft Conversion: The most popular choice for Dartford homes. A dormer is a vertical extension from the roof’s slope, creating a box shape that adds generous headroom and usable floor space.
- Hip-to-Gable Loft Conversion: An ideal solution for detached or end-of-terrace properties. This conversion extends the sloping ‘hip’ roof at the side of your property into a vertical ‘gable’ wall to maximise the internal loft area.
- Velux (Skylight) Conversion: The most straightforward and cost-effective attic conversion Dartford homeowners can choose. We install skylight windows directly into the existing roofline, requiring minimal structural changes.

Key Takeaways
What it is: A project that transforms your unused attic into a functional living space, such as a master bedroom, home office, or playroom.
Why do it: To gain valuable space and increase your home's market value more affordably than moving or building a traditional extension.
Who it's for: Homeowners and property investors throughout Dartford and the surrounding Kent area.
Typical Timeline: Most loft conversions in Dartford are completed within an 11-week timeframe.
Have your say…
Testimonials
Case Study: Dormer Attic Conversion on Derwent Road, Dartford
We transformed the attic of a property on Derwent Road into a functional and cosy living area with a walk-in wardrobe. The flat back dormer design maximised both space and natural light, and the project was completed in 11 weeks, perfectly meeting the client's needs.
– The Williams Family, Dartford

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 Dartford Attic Conversions? Contact Us Today
How Much Does a Loft Conversion Cost in Dartford?
The cost for a loft conversion in Dartford can range from approximately £26,250 to £33,750 or more, depending on the project’s size, type, and final specifications.
- Velux Conversions: Typically start from £40,000.
- Dormer Conversions: Generally start from £30,000.
- Hip-to-Gable Conversions: Usually start from £40,000.
View Our Design and Build Process
Check out the work of our amazing teams and what we can achieve in your home
Loft Conversion Complete Process
Free survey → Feasibility design & planning support with Dartford Borough Council → Chartered-engineer calculations → 8-11 week build managed by a dedicated site PM → Certificate of completion plus long-term guarantee.
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.
We provide a detailed, fixed-price quote after a comprehensive and free site survey.

Get Your Dartford Loft Converted Today
Your Trusted, Local Dartford Conversion Specialists
We have over 20 years of experience delivering high-quality loft conversions across Dartford and South East London. Our reputation is built on reliability, transparency, and superior craftsmanship.
- Fully Certified & Compliant: All work strictly adheres to UK Building Regulations to guarantee safety, structural integrity, and thermal efficiency.
- 10-Year Structural Guarantee: Every loft conversion we complete is backed by a ten-year warranty for your total peace of mind.
- Fully Insured: We carry comprehensive public liability insurance for every project.
- Transparent Process: We manage every step, from initial drawings to final building control sign-off, ensuring you are informed and confident throughout the build.
Do I Need Planning Permission for a Loft Conversion in Dartford?
Many loft conversions are considered ‘Permitted Development’ (PD), meaning they don’t require a full planning application, provided they meet specific criteria. These rules concern the extension’s size and appearance. For instance, the additional space cannot exceed 40 cubic metres for a terraced house or 50 cubic metres for a detached or semi-detached home. Our team has extensive experience with Dartford’s local planning process and will handle all necessary applications to ensure your project is fully compliant.

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 Dartford Conversion Specialists
With over 20 years of experience, we are one of the leading loft conversion companies serving Dartford. Our reputation is built on delivering exceptional quality and a transparent, professional service.
If you’d like more information on loft conversions in Dartford 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 Dartford






Ready to Start Your Dartford Loft Conversion?
Your ideal living space is just one conversation away. Contact our specialists today to discuss your loft conversion in Dartford and arrange a free, no-obligation site survey and a detailed, fixed-price quote.


