Business Details
Expert Loft & Home Extensions in London
Clapham Construction Service has specialised in loft and home extensions for over 20 years, delivering high-quality projects across London. Our team prioritises transparency, fixed pricing, and a 10-year warranty, ensuring clients receive exceptional value and reliability. With a focus on customer collaboration, we manage every project directly on-site, offering detailed specifications and honest advice.Our reputation is built on 73+ five-star reviews, reflecting our commitment to professionalism, skilled craftsmanship, and stress-free service. We specialise in transforming properties with bespoke solutions, from initial design to final completion, while maintaining open communication and accountability throughout.
Services
Loft Conversions
Home Extensions
Design & Planning
Free Consultation
Dormer Extensions
Hip to Gable
Mansard Conversion
Skylight Conversion
Highlights and features
- We offer over 20 years of specialist experience in loft and home extensions.
- Our fixed pricing ensures no hidden costs or unexpected charges.
- All projects include a 10-year warranty for long-term peace of mind.
- We provide detailed specifications and transparent project management.
- Our team of skilled professionals ensures high-quality craftsmanship and timely delivery.
What people say
Excellent service
Highly recommend
Stress-free process
Fixed pricing
Skilled team
Services
Loft Conversions
We specialise in transforming underutilised loft spaces into functional living areas. Our conversions include dormer, hip-to-gable, and mansard designs, tailored to meet individual needs. With fixed pricing and a 10-year warranty, we ensure transparency and quality craftsmanship. Our team manages every stage, from planning permissions to final finishes, guaranteeing a seamless experience.
Home Extensions
Our home extensions create additional space while enhancing property aesthetics. Services include rear, side, and wrap-around extensions, designed to integrate seamlessly with existing structures. We handle all aspects, from structural calculations to interior finishes, ensuring compliance with building regulations and client satisfaction.
Design & Planning
We offer comprehensive design and planning support, including 3D visualisations and party wall agreements. Our experts guide clients through permitted developments and conservation area restrictions. Free consultations ensure clarity on costs, timelines, and design options before work begins.
Free Consultation
Our no-obligation consultations assess property suitability for loft conversions or extensions. We provide fixed-price quotes, discuss design possibilities, and explain planning requirements. This service ensures clients make informed decisions with clear expectations about their project scope and budget.
Mansard Conversion
Mansard conversions maximise headroom and floor space by altering roof slopes on both sides. We handle complex structural changes, ensuring compliance with building regulations. Our team delivers bespoke solutions, from initial design to final finishes, with a focus on durability and aesthetic appeal.
People
Paul
Co-Owner & Project Manager
Paul oversees project management and client communication, ensuring seamless delivery of loft conversions and extensions. With over 20 years in construction, he specialises in structural design and client consultation, maintaining a hands-on approach to every project.
Dangis
Co-Owner & Site Supervisor
Dangis manages on-site operations and quality control, ensuring projects meet strict standards. His expertise in construction logistics and team coordination ensures timely, efficient delivery. He works closely with clients to address concerns and maintain transparency throughout the build process.
Questions
What areas do you serve?
We operate across London, including Balham, Battersea, Croydon, and Wimbledon, delivering bespoke loft and home extension solutions.
Do you offer fixed pricing?
Yes, all projects include fixed pricing with no hidden costs, agreed upfront to ensure budget certainty.
What warranties do you provide?
We offer a 10-year warranty on all projects, covering structural integrity and workmanship quality.
How long does a loft conversion take?
Most projects take 8-12 weeks, depending on complexity, with clear timelines provided during consultation.
Can you assist with planning permissions?
Yes, we handle planning applications, party wall agreements, and building regulation compliance as part of our service.
Are your builders insured?
All our contractors are fully insured, with public liability and employer liability coverage for client protection.
Reviews (7)
Matthew Maxwell
Nov 21, 2021
Report
Positive:Professionalism,Responsiveness
Very helpful in discussing options and giving advice on loft conversions, possibilities, impossibilities etc. Very friendly, straight-talking and informative. Would certainly recommend to anyone considering their loft options.
Very helpful in discussing options and giving advice on loft conversions, possibilities, impossibilities etc. Very friendly, straight-talking and informative. Would certainly recommend to anyone considering their loft options.
Charlotte Field
Jul 22, 2021
Report
I couldn't be more pleased with the job Clapham Construction did on my loft conversion and rear extension. The work was completed so quickly to a very high standard. Paul and Dangis were great with communication throughout and helped resolved 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!
Michael McKenna
Jul 21, 2021
Report
Our experience with this company was excellent from the initial consultation, through the building work on the rear dormer, to the final touches inside. The major structural work happened gratifyingly quickly (considering it was February), while the later internal work took a little longer. However it all worked out well and Paul and Dangis provided us with support throughout. Overall a really good experience for us, and really happy we went ahead with these guys.
John Fyfe
Jul 11, 2021
Report
Paul and Dangis are everything you want from your builders from the very get go. Approachable, honest, flexible, professional and most importantly, experts at what they do. We replaced our 1 room loft extension with a full hip to gable conversion and now have 3 wonderful rooms with so much more space. They listened to our needs, advised what they thought was best, and were always willing to tweak where required. We are exceptionally happy with the end result, and would welcome Paul and his team back any time for any future building works.
Clare Hulme
Jun 21, 2021
Report
Clapham Construction did a loft conversion for us and were really pleased with the end result. The process began with a really detailed chat with Paul about what we wanted and what was realistic for the space. The quote offered good value and having talked to neighbours whod used the company we were happy to go with them. The staff were quick and efficient and Paul and Dan kept in touch and visited frequently throughout to keep on top of the job and keep us in the loop.
Payments were split by stage, which is great as you can control your budget and know whats been delivered and when
Payments were split by stage, which is great as you can control your budget and know whats been delivered and when
Harry Morton
May 11, 2021
Report
I'll confess I am a bit picky when it comes to renovation work, dad was a builder. I ended up getting 10 or so quotes for the works, it we were a little caution from the passed. Dan and Paul came and spent the longest time with us just discussing our needs and planned use... we really appreciated this as no one else asked. There advise was then based completely on that, talking us out of some additional works that they felt wasn't needed... which we really appreciated. There quote was mid-range compared to others, but unlike most was fully inclusive and jargon free. We took the plunge feeling
Greg Clark
Apr 28, 2021
Report
I was considering making an offer on a property with an old, poor quality loft conversion which we were looking to update after purchase. Paul @ Clapham Construction was able to give me great advice and expertise on my options, and his honest advice was extremely valuable and ultimately saved us and hassle up front. Once we have identified a loft conversion project in the near future, Paul will be the first person I call. Thanks.
