Basements2 min read

Adding a basement to a West London home

Basement contractors in London. We design, engineer and build basements under one contract. Basement cost in London, the 2026 figures.

In the bustling and modern urban environment of London, space is a luxury. This is especially so in sought-after areas. Examples are Fulham, Chelsea, South Kensington, Mayfair, and Belgravia. Homeowners looking to expand their living spaces often find the solution beneath their feet. It means adding a basement under their existing home. That is the work NU Projects does across West London.

What goes in a basement

We excavate and build basements under occupied London houses. The rooms down there are usually the ones that do not need daylight. Extra bedrooms, utility rooms and home cinemas have all come out of these projects. So have wine cellars. So have swimming pools, gyms, saunas and self-contained flats. Moving those below ground frees the floors above for living space.

The borough rules

In the diverse landscape of London, each borough has its own regulations. They govern basement construction. These requirements encompass various aspects. They include traffic management plans, site construction management plans and soil testing. They also include structural engineering calculations, eco-home assessments and flood risk assessments. Other specialised documents are prepared by expert consultants.

Assembling that documentation is slow. It costs several thousand pounds before a single spade goes in. That is why it is not work for somebody doing their first one. We obtain planning approvals for basements. This is part of the same contract as the design and the build. We can tell you early what is likely to be achievable at your property.

See one being built

You may be considering a basement. You may want to see the process rather than read about it. If so, we can arrange a visit to a live basement project. Send us the details and we will set it up.

In short

In space-constrained West London, a basement offers a multitude of benefits. You may need extra bedrooms, a cinema or a self-contained flat. Either way, a basement is usually the only direction left. Before you appoint anybody, read the ten checks worth making. Also read planning a basement conversion for the surveys and the sequence.

To speak to someone about your project, fill in the contact form. You can also call 020 7731 6841 or email info@nuprojects.co.uk. Or use the WhatsApp link in the bottom right-hand corner of the screen. We reply the same day.

This is the work we do. Basement contractors in London, or ask for a cost estimate.

Published 2 October 2023. Written by the NU Projects studio, edited since for house style and accuracy.

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