About buildLONDON Basements

Our basement conversion and construction division creates living and work spaces for residential and commercial properties.


We construct new basements, and expand existing basements, to create kitchens, family and games rooms, gyms, home cinemas, offices and storage areas. All excavation, underpinning and structural waterproofing are carried out by our specialist engineering and construction teams, as is the design & decorative work in creating these new rooms.


Our team includes surveyors and structural engineers whose experience of creating basements enables us to give customers a reliable opinion, almost immediately, on the viability, challenges and potential cost of a project.


Designs and drawings are prepared by our in-house architects, and we handle all planning permission and building regulations applications on the customer’s behalf. Qualified project managers with extensive experience of basement construction ensure each job is completed on schedule and on budget and to our exacting quality standards.


In addition to handling all aspects of the basement’s construction, we will take care of all finishing interior works including flooring and decoration, spa’s and swimming pools and can design and build bespoke furniture to maximize the potential of the new spaces.


See the results of this commitment >


warranty_icon        10 Year Warranty


When you choose buildLONDON to refurbish or build your basement, you receive a 10-year warranty once the work is completed.


For some of the products and systems we install, such as waterproofing, we also provide our clients with a 30-year warranty to ensure the right solution to any issue.


We are confident about our work and we commit to it by providing you with a fully insurance-backed warranty. If you experience any problems with a project due to our work within a 10-year period, we will take care of it at our own cost.


Insurance-backed, means that the warranty is covered even if we are unable to fulfill this obligation.


All the information and paperwork is included in your completion pack, with the direct contact details of our service department, which is ready to resolve any issues.


Additionally, we provide comprehensive insurance for all works and liabilities, which we undertake throughout the construction project. This type of coverage is provided to also satisfy home insurers and mortgage companies. A copy of all the information is provided to you prior to any work.


service_icon        Service Areas


Our Company is based in South London, but we provide our services in any area within Greater London.

You will be surprised, but we have probably already had a project close to you, or even in the very same street.


We also offer our services in the Home Counties.

We have completed hundreds of projects in these areas and provided excellent service.


online_icon        Online Estimate

We are aware that for our clients the cost of creating an ideal home is an important factor in the decision to start the process. According to that, we genuinely offer a FREE Project Consultation and Quotation. The only thing you have to do is Contact Us to arrange an appointment. During the appointment our experienced and knowledgeable team will discuss with you all possible options for your future basement and the most important aspects for you to consider.

Want an Estimate? We also offer an Online Estimate service. This online estimate tool is created to give our clients an idea about the potential costs of a future project. Simply select answers from the multiple-choice options for each extension element and the system will provide you with an estimated price for the potential build.

There are illustrations and a Help button available to assist in your answers as well. If you have any further questions or would like a complete consultation and prices, we are happy to help you.


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