How to Repair Foundations with Underpinning

Adding a London basement underneath a garden is an innovative, space-saving solution when building up isn’t an option. If the footprint of your house isn’t big enough, extending the construction works into the garden can have many benefits.
But what are the considerations when planning a garden basement project? Knowles share their expert tips on how to prepare before the build begins.
Before any basement project can begin, you must ensure you obtain is the planning permissions. Attaining the correct planning permissions can sometimes be more challenging than the actual construction project itself, but it’s an unavoidable necessity that’s best done sooner rather than later.
Typically, most councils advise to expect around eight weeks to process the application. If the project is taking place in London, it’s worth keeping in mind that the Royal Boroughs of Kensington and Chelsea have restricted basements to a maximum of one storey, so it is worth investigating your local planning permissions restrictions before drafting any sketches, although an esteemed architect should be able to guide you through this process.
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Adrian Jenkins
Important basement surveys
To meet planning requirements, surveys will need to be instructed to ensure your garden is suitable for the build. For example, a geo-technical survey will need to be carried out to assess the soil structure and investigate any potential issues with the water table. An arboricultural survey will also need to take place to discover whether the basement dig may also affect the health of surrounding trees. This part of the process will also identify any potential issues that fall under the Tree Preservation Order. Once the necessary surveys have been completed, you can begin planning the shape, size and layout of the garden basement.
Important basement surveys
Whilst garden basements usually create less noise for neighbours as the construction work takes place away from the home, instructing a team such as Knowles who are ‘Considerate Constructors’ certified will ensure a smooth, efficient and socially-aware project that manage and facilitate any local or neighbourhood issues, giving peace of mind to all involved and affected.
A mindful basement contractor will prioritise keeping neighbours up to date on the project, keep work within normal business hours and make sure the lines of communication stay open throughout the duration of the garden basement project.
Garden basement ideas
With no loss of light or additional space, the garden’s aesthetics can remain intact, but what about the basement itself? From home cinemas to wine cellars, spa areas to indoor swimming pools, the high ceilings that a garden basement can provide can is a gateway for a whole range of living areas.
Whether homeowners prefer big, open-plan spaces or distinctly designed separate areas, collaborating with professional basement builders can ensure the finished project perfectly fits the brief.
Whilst also adding significant value to your property, a premium built garden basement can be the highlight of any home. Knowles is the trusted partner for principal architects, developers and estates across London and is the first choice for all subterranean projects. Knowles has over 20 years of experience in the highly specialised field of basement construction across London. If you require a consultation for an upcoming basement project, get in touch with one of our basement experts today on 0207 313 4169 or via email at info@knowles.uk.com.