Our Design Team can help you deliver the right look for your Loft conversion or Extension. All of our design works come with a 3D model available via a Free App so you can visualise the space before we finalise it for you.

To talk about your project, design options and how we can help... contac...

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Loft Bathrooms... As big as you want.

The bathroom, shower or Ensuite. Its often an area that we can help deliver a bit of a wow. Regardless of size. We can help you be clever, even on a budget to maximise space, often using reclaimed items and inexpensive fittings to give these spaces a bit of ...

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Communication... we have it nailed !

We take pride in our business, we the owners directly attend all Free home consultations, quote for every job and manage every project from the start of the design process until the day we hand over our keys and completion pack.

We attend your property dail...

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L-shaped Dormer? We have you covered.

L-shaped dormers, despite some local authority restrictions are still very popular. This is one we did in Brockley, complete with lowering ceilings and some bespoke carpentry. Anything can be built and designed to your specification. Always on time, always w...

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Clapham Construction Service can do it all. For all of our Loft Conversions and Extensions we provide services for Tiling, Decoration, Under floor heating. Everything you need. If you can find it on Pinterest, instagram, facebook or online we can match the look, style and design...

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On Time, On Budget, On the Point!

We specialise in these works, lowering ceilings, raising dormers and building bigger homes for growing families. We cover all of it, our unique method of working brings quick results, great quality and most importantly...... Easy, clear and Honest communication....

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Another new Job started in Tooting.

Rear Dormer with French doors and a Juliet balcony. We will also be undertaking some internal refurbishment works.

This project came recommended to us from an existing client. We aim to complete as quickly as the last project.

See more projects at www.cla...

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2 weeks ago
I am extremely happy with the services of Clapham construction and the outcome of the completed loft conversion. The workmen were tidy, polite and completed on the job instructions. I would highly recommend to all who dream of having a dream come true loft! Special thanks to owners/project managers Paul and Dangis, they been on site nearly every single day to check progress and keep me up to date. They did exactly what they were contracted to do and that’s why we Love them!!!
- Lorna C
a month ago
I found Clapham construction service on Youtube, when I was browsing, trying to educate myself on the process of a loft conversion. I was seduced by some lovely videos to be honest but invited them to quote for the works. To be honest without sounding so enthralled like some other reviews I’ve read… they did and acted exactly as they represented on the videos and website. I couldn’t complain about anything because they did exactly what they said on the tin. Having spoke to the owner a few times it seems they limit the number of jobs they do per year to ensure they the management can personally manage each job, that’s a good business model.
- George A
2 months ago
Clapham Construction Service completed our loft conversion. We are extremely pleased with the results. The work is of extremely high standards. It was important to us to have people we can trust. We are so happy – Thank you Dangis and Alfred. A word of caution for other builders - Originally, we took on another contractor who was £2000 cheaper, however it turns out that all they do is sell the project and sub contract the work to a 3rd party. When we received the contract to sign the first payment goes to the company and the remainder goes to the builders. The contract was actually between us and the builders… not the company. When I asked the company what this was about and what happens if the builders go bust… I couldn’t get a straight answer. Clapham Construction Service were straight and honest start to finish
- Frank W

Loft Conversion in London | Local builds

If a loft conversion in London or across the capital is what you want, or if you just simply want to see what you could get from the space you have, Clapham Construction Service can offer you the right advice and the design and build service you need. In addition to our bespoke Loft Conversions we operate a successful range of Home Extensions and Basements tailored for you, your home and your lifestyle 

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  • 020 3950 7957


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Suite 17, 264 Lavender Hill, Clapham Junction
SW11 1LJ
United Kingdom

Opening Hours

Mon:8:00 am – 8:00 pm
Tue:8:00 am – 8:00 pm
Wed:8:00 am – 8:00 pm
Thu:8:00 am – 8:00 pm
Fri:8:00 am – 8:00 pm
Sat:8:00 am – 8:00 pm
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