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 Plans consultancy providing advice across the UK on a range of projects from small residential to large scale, major regeneration schemes. Jigsaw Plans consultancy providing advice across the UK on a range of projects from small residential to large scale, the UK on a range of projects the UK on a range of projects major regeneration schemes. the UK on a range of projects.

Basement conversion on existing cellar From £110,000

A Mansard loft conversion is commonly found on three storey properties. A mansard loft extension use the full floor space of a loft a conversion. The loft conversion is built with brickwork to the sides and the loft is raised from the front and rear of the property. The mansard loft conversion has the best height out of all the loft conversion types. This type of loft conversion is more commonly found and around central London. This type of loft conversion requires planning permission approval form your local authority. A mansard loft extension is more like a full floor conversion meaning that it does not feel like a loft conversion but feels like part of the original property. This is the type of loft conversions most commonly found in and round the city of London. This is the type of loft conversions most commonly found in and round the city of London.

New Basement Dug out From £130,000

A Mansard loft conversion is commonly found on three storey properties. A mansard loft extension use the full floor space of a loft a conversion. The loft conversion is built with brickwork to the sides and the loft is raised from the front and rear of the property. The mansard loft conversion has the best height out of all the loft conversion types. This type of loft conversion is more commonly found and around central London. This type of loft conversion requires planning permission approval form your local authority. A mansard loft extension is more like a full floor conversion meaning that it does not feel like a loft conversion but feels like part of the original property. This is the type of loft conversions most commonly found in and round the city of London. This is the type of loft conversions most commonly found in and round the city of London.

Multi Level Basement Conversion From £300,000

A Mansard loft conversion is commonly found on three storey properties. A mansard loft extension use the full floor space of a loft a conversion. The loft conversion is built with brickwork to the sides and the loft is raised from the front and rear of the property. The mansard loft conversion has the best height out of all the loft conversion types. This type of loft conversion is more commonly found and around central London. This type of loft conversion requires planning permission approval form your local authority. A mansard loft extension is more like a full floor conversion meaning that it does not feel like a loft conversion but feels like part of the original property. This is the type of loft conversions most commonly found in and round the city of London. This is the type of loft conversions most commonly found in and round the city of London.

New Build Home Basement Conversion From £150,000

A Mansard loft conversion is commonly found on three storey properties. A mansard loft extension use the full floor space of a loft a conversion. The loft conversion is built with brickwork to the sides and the loft is raised from the front and rear of the property. The mansard loft conversion has the best height out of all the loft conversion types. This type of loft conversion is more commonly found and around central London. This type of loft conversion requires planning permission approval form your local authority. A mansard loft extension is more like a full floor conversion meaning that it does not feel like a loft conversion but feels like part of the original property. This is the type of loft conversions most commonly found in and round the city of London. This is the type of loft conversions most commonly found in and round the city of London.

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