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Loft conversions

Loft Conversions

The Loft Conversion London team are the best Loft Conversion Specialists in the industry. Loft Conversions in London are the solution for growing families and people looking to add quick and easy space to their properties. A Loft Conversion can be completed within just a few weeks



The House Extension London Team are excellent at creating all types of Extensions. Single or Double Storey, Side Return and the latest designer Glass Extensions are built within weeks. Kitchens, Living areas and Entertainment areas are some of the most popular types of House Extensions

Basement Conversions


The Basement Conversion London Team are specialists in Converting Basements in London. Basement Conversions are now very popular within London recently. A London Basement Conversion can be a new self contained flat a gym a cinema room or an addition of many new rooms to the property

Basement Conversions London

Basement conversions are becoming very popular within London recently. They add maximum space and are built for a variety reasons. A London Basement Conversion can be a new Self Contained Flat a Gym with Swimming Pool a Home Cinema or an addition of many New Rooms to the property. Underground single or multi car parks complete with automatic lift operation are also designed and installed. A basement conversion is an excellent option and provides an excellent return on investment.

At Builders GB we can extend or convert existing cellars or completely excavate, create and install a completely brand new basement with a head height of above 2.6 meters or more if required. A basement conversion adds between 30% to 60% and sometimes more of new habitable space to properties as Basement Conversions can be created to extend under front and back garden areas depending on the ground condition. Natural light is available within a Basement Conversion using the latest products and natural light distribution tricks including light wells for maximum daylight within Basement Conversions.basement conversions london

Our unique Basement Conversion method keeps mess to a minimum. The house is not affected by mess or dust as everything is excavated from below the front window. The same area is used for access throughout the basement conversion project. Dirt is automatically transferred from below the home into awaiting skips.

The Basement Conversion specialist Structural Engineers are very highly experienced in all type of Basement Conversions they meticulously oversee each and every stage of the basement construction process with the Basement Conversion Architects that specialise in Basement Conversions only. The Structural Engineers work with the Architects and carefully plan each individual aspect and oversee that all underpinning and structural supports are correctly fixed at every stage of the project.

Party Wall Agreements are required for most basement conversions. Our surveyors compile a detailed condition report including checking the exact condition of the ground, structures and qualities of the properties concerned. The Party Wall Agreements are awarded before work commences and they include detailed structural engineering plans for the project and also include set conditions of the works.

Only the latest waterproofing technology is used. A plastic cavity membrane is installed that enfolds and covers every area of the new basement conversion completely. This system allows all water to be pumped and directed straight into the drainage system of the property. This method keeps the property structure safe from any pressure and removes moisture from every area around the basement conversion completely.

SAVE MONEY with FREE Architecture FREE Structural Calculations & FREE Decorating. These offers are worth a few thousand pounds and are available on every new London Basement Conversion.

Please click here to contact us or give us a call on 0800 019 0470 should you require any further information about any of our services or to arrange a quotation.


100 New Bond Street, Mayfair, London, W1S 1SP