Specialists in Basements Waterproofing, Underpinning & Groundworks
Basement Construction Specialists in London & Across the UK
At Delta Force Construction, we specialise in high-quality basement construction and structural groundworks across London and the UK.
We work with homeowners and developers to deliver strong, safe and fully waterproof basement shells ready for final fit-out.
Our services include basement excavation, reinforced concrete structures, underpinning, waterproofing systems, sump pump installation, and full groundworks packages.
New build basements
Our expertise covers new build basements, ensuring every project is built to last and protected against water ingress with industry-leading waterproofing systems.
Basements beneath existing properties
We specialise in constructing basements beneath existing properties, expanding your space with minimal disruption and maximum structural integrity.
Basement structures under gardens
Extend your living space discreetly with our expertise in constructing robust and watertight basement structures under gardens and extensions.
Structural underpinning & groundworks
Beyond basements, we offer a full range of supporting services, including structural underpinning, foundations, and all aspects of groundworks.
Our Services
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Basement Construction (new build & existing properties)
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Basement Extensions Under Gardens & Homes
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Underpinning & Structural Repairs
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Basement Waterproofing & Tanking Systems
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Sump Pump Installation & Maintenance
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Groundworks & Foundations
"Delta transformed our property with a flawless new basement. Their professionalism and attention to detail were exceptional. Highly recommend!"
Sarah M., Homeowner