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
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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

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! 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. 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. 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. 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. 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! 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. 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. 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. 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
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.

