Loft Conversions Extensions


Clapham Construction has specialised in Loft Extensions, Loft Conversions & Home Extensions for over 20 years.

Our delivery promise

Stunning Looks & Functionality

Full Accountability

We own our business, we sell you our service and then we manage your project for you directly on site.

10 Year Protection

All our projects come with a 10 year protection warranty. Our warranty cover is one of our key elements.

Unbeatable Prices

Our prices, like us, are straight forward and laid out right at the beginning and do not change unless you want it to, prices are fixed, guaranteed!

100% Customer Focus

Just ask our clients, they will not only tell you, but show you what we do and what sets us apart in the market.

Detailed Specification

We offer full specifications so you know exactly what you’re getting. No surprises.

Who we are + What we do

Loft Extension Specialists

Welcome to Clapham Construction Service, a construction company serving the London area. Here at Clapham Construction, we provide our clients with a first-class service thanks to our 20 years of experience within the construction and home renovation industry.

From our specialist loft conversions to our stunning home extensions, we go above and beyond to create that much needed extra space in your home where you need it most.

Whether you’re looking to increase your property’s value or simply make it more liveable for your growing family, we can help make your home extension dreams a reality.

Contact us

Looking For Loft Extension
Services in London?

Whether you’re looking for a loft conversion in London or a 100% bespoke home extension on the outskirts, it all begins with our free consultations in which you’ll receive honest feedback and advice about the project you have in mind.

Contact usBook a consultation
By far the best team I’ve ever worked with. They truly understood the look I was going for and completely nailed it!

It all begins with our free consultations!

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illustration of loft conversion

Loft Conversions + Extensions

Loft conversions are without a doubt our speciality. From creating a small loft conversion in the space you have available to creating entirely new floors, here at Clapham Construction Service, we can make your loft conversion work for you. 

illustration of home extension

Home Extensions

House extensions can create a stunning transformation to any home, adding extra living space and creating an entirely new look that reflects the unique style of its owners. 

Case Studies

View our 3D Virtual Tours

Loft conversions are a truly incredible addition to any home. Not only do they add vital square footage to your liveable space but they do so without having to sacrifice any of your outdoor garden areas. They can add up to 20% to your property’s value making them not just a great addition in terms of your lifestyle but a great investment. 

Here at Clapham Construction Services, we provide a free consultation for anyone looking to add a loft conversion to their home. During these consultations, we inspect your property to establish whether it’s suitable for a loft conversion while finding out more about your style and what you’re hoping to achieve. It’s also incredibly important, however, that during this time we introduce ourselves to you as a company. The fastest way to get an idea of what we can help you achieve is through looking at our previous work. We’re proud to boast an extensive portfolio and while this used to consist of a portfolio of images, we’re now proud to boast a selection of virtual tours.

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Whats included in a Free Consultation?

A no obligation Fixed Price quotation

Our free consultations can usually last from 20 minutes to one hour depending on whether you just want a fixed price quote, or you would like some advice on your options and knowledge on what’s involved in undertaking a Loft or Extension project. 

Review the suitability of your property for the proposed project.

Conduct some prior planning research to review your options.

Discuss specifications and options available for the works.

Discuss things to budget for… beyond our works to complete the build.

And much more…
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