• Basement Extension Case Study 03

    Basement Extension Case Study 03

    This is the ‘one that got away’.  A below garden basement extension to a prominent Grade 2 listed building, which Shape Architecture gained planning permission for in WindsorSadly our Client decided not to buildIt remains one of our favourite basement projects though, both because of gaining permission to such a listed property in a sensitive location and also the quality of the series of dramatic spaces it created.  As with all of our projects the design process was a combination of sketching and exploring design issues with 3D computer modelsWhen drawing ideas we quite typically design by drawing a series of sectionsThis was particularly the case here as we explored how the ground floor and its proposed orangery extension integrated with the basement, garden and the existing buildingThe result is a curved roof whose curve then extends into the below garden basement extension in the form of a curved ceilingGeometry, form and a limited palette of high quality materials are key to the success of this designThe breakfast area is designed as an independent organic platform in the garden setting from which the stair to the basement flows downThe success of the planning application, which we gained at the first attempt is also derived from the supporting statements that accompany the drawingsThese include a Design and Heritage statement which we wrote to demonstrate our detailed understanding of the ‘Heritage Asset’ we were adaptingConstruction Methodology and Traffic Management plans were also submitted.

    Link to Windsor Basement Project

    For more information on our basement extension in Windsor, please follow the link: 


    Contact Shape Architecture

    Should you wish to discuss ideas you have for a basement projectWe would be happy to chat with you. 


    Can you build a basement below a garden?

    Yes of course and there are many advantages.  As with any other form of development there are also planning restrictions.  A key factor is the common limitation not to exceed 50% of the depth of the garden in forming a below garden basement.  A deep garden with easy access can be an ideal location to form a new basement.  Not having to prop and support a house over the excavation is obviously a significant advantage.  Thereafter the prime issue is bringing day light and natural ventilation into the below garden basement.  Here we have created below garden basements with a series of lightwells supported by glazed panels over set within a paving zone.  Changes in landscape levels also allow strips of high-level glazing such as at this Case Study project in Windsor.