Welcome to Jigsaw Build one of London's leading basement extension companies

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Jigsaw Builds basement extensions are bespoke and designed to your style

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Jigsaw Builds basement conversions can open up your homes unused floor space

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Jigsaw Build can build a a full garden basement extension

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Why move out when you can extend down and make a basement extension

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Jigsaw Build offer a plans to completion service with our basement extensions

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Welcome to Jigsaw Build, specialists in all types of basement conversions and cellar conversions. Jigsaw Build can turn your unused cellar space into a bespoke and unique living space, we offer a complete plans to completion service for our customers. Jigsaw Build use high end basement builders to make your cellar space just the way you want it. Each basement conversion comes with a 10 year guarantee and other completion certificates.

Jigsaw Build is one of London's most bespoke basement builders

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Completed Projects

See Our Completed Basement Projects

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Book Your Free Basement Quotation

Jigsaw Build offer a free site survey will all our basement extensions projects. One of our surveyors will come to your property to take a look at your property. They will have chat with you about what you are trying to achieve and what is the purpose of your cellar conversion project. They will explain the basement conversion planning process to you, this will give you an idea what kind of costs are involved and how long your basement conversion will take to build. Call or Email to book your free basement extension quotation.

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