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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Jigsaw build have designed a very simple guide of what kind of costs you can expect for your basement build. There are many different types of basement extensions that can be added to your home, each projects is dependant on many different factors and final price can only be determined by a site visit. This basement cost is just guideline only.

Basement conversion on existing cellar From £200,000

This type of basement is for a home that has a cellar or basement already in the home. This type of basement conversion involves lowering the existing cellar floor to make more height and space. There are many different factors that needed to be taken into consideration like, the waterproofing system needed, the condition of the ground, if there is a river nearby, headroom required. The basement extension will be carried out by professional builders.

New Basement Dug out From £250,000

This type of cellar conversion is for a property that does not have basement or cellar at all. The house will need careful underpinning will take place stage by stage. The foundations will be made strong before any other work can be carried out. The soil is removed and a new cellar will be created. Then steel beams will be placed under load bearing walls as support. Your cellar will be made water proof. Tanking and membrane must be fitted throughout the cellar.

New Build Basement Conversion From £300,000

When constructing a new build house you can add a basement conversion to your property. Jigsaw Builds basement team will excavate the land and construct a basement. The foundation of the new build basement will be made deep or piling may be used. Due to this cellar being a new build property all the waste, water, gas and electrical utilities have to be installed. Jigsaw builds team of professional basement builders will manage your cellar conversion design to completion stage.

Multi Level Basement Conversion From £400,000

The multi-level basement extension is the most complex basement conversion to build but at the same time it is the most beneficial basement conversion. The cellar is constructed on 2 or 3 levels below ground level and the possibilities are endless to what can be built. This type of cellar conversion is built in and around central London as the cost to build is high, therefore it is only worth building on a valuable property so that price increase can match build cost.

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Initial Advice is Always Free, Book Your Basement Survey Now

Jigsaw Build offer a free site survey will all our basement extension projects. One of our surveyors will come to your property to take a look at your cellar area. They will then suggest the different types of cellar extension designs that would be suited to your home. They will tell you the benefits and disadvantages of each basement conversion. They will explain the basement planning process to you, this will give you an idea what kind of costs are involved and how long your basement will take to build. Call or Email to book your free basement conversion quotation.

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