Residential – Basement Extension

Basement Extensions

Basement Extension Case Studies

Basements don’t have to be dank or dingy spaces where you just store old paint tins anymore. You can transform this oft neglected space into a light and airy extra room for your home. This is a great idea in London where space is at a premium and you might not have space for a single storey extension or a double storey extension. A cool basement kitchen in Lambeth, cozy living room in Bromley, underground swimming pool in Dorking, or even a teenager’s haven in Durham are well within your reach with Extension Architecture’s planning, design and project management expertise.

It is likely that a basement conversion in London will need planning permission, whether you are retrofitting a basement or using an existing one. What’s more, the requisite means of escape and light that are generally needed in basement extensions or cellar conversions means carefully developed building regulation drawings need completing by an experienced architect. 

Here at Extension Architecture we have decades worth of experience between us and can advise you on all aspects of extending or converting your basement or cellar.

For inspiration, take a look at the London basement extension case studies below, or get in touch to find out more about how we could help you get the most from your property.


Case Studies of work we have completed along the way

See the full range projects we have completed for our satisfied customers: Click on the relevant icon below to find out more!

What are you planning ?


Single Storey Extension

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Double Storey Extension

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Convert to Flat

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Loft Conversion

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Basement Extension

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3D Visualisation

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New Builds

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Change of Use

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Steph Fanizza, Architectural Design & Team Manager

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