BuildExtensions
Your trusted partner in Design and Construction - we are over 20 years experienced and well-established building company based in Raynes Park, London.
We have an in-house architecture/Interior designer and building team.
18/12/2025
This stunning extension, completed by our team, has completely transformed the home into a bright, airy, and inviting space. The large glazed skylight floods the interior with natural light, while the open-plan layout creates the perfect balance between dining, relaxing, and entertaining.
18/12/2025
This stunning extension has completely transformed the home into a bright, airy, and inviting space. The large glazed skylight floods the interior with natural light, while the open-plan layout creates the perfect balance between dining, relaxing, and entertaining.
17/12/2025
Interior design within one of our extension projects.
From spatial flow to finishes, every detail was considered to ensure the extension feels seamless with the existing home.
15/12/2025
Loft Transformation in Progress
A smooth, step-by-step process that transforms unused loft space into a bright new room.
This project came from one of our previous clients, whose loft conversion we completed four years ago. They returned to us to redesign their family bathroom, and we’re grateful they chose our team once again.
The full transformation took just two weeks from start to finish. The bathroom is now a modern, luxurious space with a clean layout and high-quality finishes. Another project completed with care, precision and a very happy returning client.
11/12/2025
Every Stage of a Loft Conversion
1. Scaffolding installed for safe access.
2. Existing roof and structure removed.
3. New steel beams, joists and timber structure fitted.
4. High-performance insulation and new roofing materials installed.
5. Roof tiles, dormers or rooflights added for daylight.
6. First-fix electrics and plumbing completed.
7. Internal build, plastering and final finishes.
10/12/2025
When You Can’t Extend Outward, Go Downward
From excavation to final finishes, this entire space began as unused ground beneath the house. In central London, where extending outward is nearly impossible, every inch matters. We transformed the basement into a warm family room with valuable storage, turning restricted space into a practical and inviting part of the home.
This is the result of thoughtful design and precise construction, proving that even underground can become a place to live, gather and enjoy.
beforeandafter
08/12/2025
Transforming unused loft space into a bright new room.
From stripping back the old tiles to installing new structure, insulation, and a fresh slate finish, every stage is carried out with precision and care.
Our team focuses on strength, durability, and a clean finish that will last for decades.
05/12/2025
A full bathroom renovation finished with beautifully selected marble tiles.
Our client wanted a clean, modern space with high-quality materials and a premium finishand.
From the bespoke double vanity to the brass details and seamless marble patterns, every element was chosen to bring a luxurious, hotel-style feel into the home.
04/12/2025
Our client was extremely happy with the quality of the work and the final finish.
Seeing a space transform from outdated to modern, bright, and functional is why we love what we do.Our client was extremely happy with the quality of the work and the final finish.
RenovationProject UKHomes BeforeAndAfterHome HomeImprovement
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Telephone
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Address
London
SW208DN
Opening Hours
| Monday | 9am - 6pm |
| Tuesday | 9am - 6pm |
| Wednesday | 9am - 6pm |
| Thursday | 9am - 6pm |
| Friday | 9am - 6pm |