London Basement has long been at the forefront of specialist basement and structural construction projects across London and the Home Counties. Over the years, we’ve built a reputation as the trusted partner for both private homeowners and professional partners, including Architects, Structural Engineers, Developers, Contractors, and QS firms.
We combine deep technical expertise with a commitment to clarity, compliance and client confidence, ensuring every project is delivered with precision and transparency.
Choosing London Basement means partnering with a team that combines specialist expertise, proven experience, and a commitment to quality at every stage of your project. Trusted by homeowners, developers, and leading industry professionals alike, London Basement transforms spaces into functional, valuable, and long-lasting additions to any property.
Backed by three decades of specialist experience and proven track record across London
Fixed‑price contracts and phased delivery models designed to ensure efficient predicable delivery
Proven sequencing, compliance overlays, and governance frameworks to ensure quality and safety
Trusted by a wide range of private clients and leading industry professionals across London and beyond
We provide a complete, end-to-end service that covers every stage of complex below and above ground structural works - from initial consultation and design through to excavation and construction. Our team manages every aspect of the process, coordinating engineering, safety, and compliance to ensure each project is delivered on time and to the highest standards. Whether it’s deep foundations, retaining structures, or full basement developments, we handle every detail with precision and care.
Basement
Construction
New build and retrofit basements that transform homes and developments
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Structural
Alterations
Underpinning, extensions, and complex modifications to existing structures
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We specialise in new-build and retrofit basements that transform homes and developments, adding valuable living space and long-term property value. Whether you’re looking to create a luxury entertainment suite, a home gym, cinema room, wine cellar, or simply extend your usable space, our team delivers tailored solutions that seamlessly integrate with your existing structure. From initial design and waterproofing strategy to excavation and structural works, we handle the entire process with care and precision. Every basement we construct is built to meet the highest standards of safety and performance, creating beautiful, functional spaces beneath your home that feel every bit as inviting as those above ground.
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We deliver complete structural shell and core packages for multi-disciplinary projects, ensuring every element is engineered for strength, stability, and integration with the wider build. Our expertise covers reinforced concrete frames, steel frames, retaining walls, underpinning systems and complex load bearing structures that form the foundation of both new-build and retrofit projects. Working in close collaboration with architects, engineers, and main contractors, we coordinate each stage of the process to guarantee precision, efficiency, and safety. By combining advanced construction techniques with rigorous quality control, we provide robust, long-lasting structural solutions that support every aspect of your project above and below ground.
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We specialise in underpinning, extensions, and complex modifications to existing structures, providing the technical expertise required to safely expand and strengthen homes and developments from the ground up. We design and deliver bespoke solutions that allow for deeper basements, additional floors, or the reconfiguration of existing layouts without compromising structural integrity. Using proven engineering methods and precision construction techniques, we stabilise and enhance existing foundations while minimising disruption to the property. Whether it’s extending beneath an occupied building or adapting an older structure to modern standards, we ensure every project is completed with meticulous planning, structural accuracy, and long-term durability.
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We deliver safe, compliant solutions that protect structures during every stage of construction. Our approach combines rigorous engineering, detailed risk assessments, and strict adherence to current building regulations to ensure full structural stability throughout excavation and construction. From temporary works design and monitoring to waterproofing and load management, every element is planned with safety in mind. By coordinating closely with structural engineers, surveyors, and site teams, we mitigate risks, prevent movement, and maintain the integrity of surrounding buildings. The result is a secure, well-managed process that safeguards both people and property while achieving exceptional construction quality.
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Explore our portfolio to see examples of our projects, from new-build developments to complex retrofits. Each gallery highlights the quality, precision, and innovation we bring to every project, showcasing the transformative impact our work can have on homes and developments.
"We are so pleased to be back in our lovely home .We have been so impressed with the LBC team, everyone has been absolutely outstanding. If you have any potential clients you are trying to convince, send them my way. We are really pleased."
Mrs C
Wimbledon
"My business is a Property Investment Company and so I have had many dealings with builders over the last 24 years. My experience with London Basement was excellent. The team were courteous, professional, helpful and they produced a high quality job in line with the original cost and time estimate."
Mr H
Hampstead
"LB were very sensitive to, and proactive in reducing to a minimum, any disruption - and for much of the actual excavation and structural works we hardly knew they were there. We decided to use LB because they had the best reputation for quality and care. They are not the cheapest - but definitely the best value for money."
Mr G
Camden
"I want to thank you and your entire team for your efforts on our behalf. It has been a pleasure for us to work with LBC. Thank you to you all, for working patiently with us at the outset of the project to help make our dreams a reality. I can assure you we would have no hesitation in recommending the London Basement Company to others."
Mrs S
Hampstead Garden
Call us on
020 8847 9449
Email us at
sales@londonbasement.co.uk
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Suite 6, 2 Shad Thames
London, SE1 2YU