From shallow cellar conversions to full basement excavations, our structural engineers, waterproofing specialists and fit-out teams deliver luxurious subterranean living spaces including cinema rooms, gyms, wine cellars and self-contained annexes.
Every basement project is engineered, waterproofed and finished by our specialist in-house team, ensuring structural integrity and luxurious results.
Chartered structural engineers design underpinning, contiguous piling, secant walls and reinforced concrete structures tailored to London clay and local geology.
Type A, B and C waterproofing systems including cavity drainage, tanking membranes and sump pumps with 10-year insurance-backed guarantees for complete peace of mind.
In-house party wall surveyors manage notices, schedules of condition and neighbour agreements, streamlining approvals and maintaining positive relationships.
Cinema rooms, home gyms, wine cellars, spas and self-contained annexes finished to the highest standards with premium materials and smart-home integration.
Full planning applications, building regulations submissions and liaison with local authorities. We handle lawful development certificates and conservation area requirements.
Mechanical and electrical installations including MVHR ventilation, underfloor heating, lighting design, fire detection and full electrical certification.
Explore some of our recent basement conversions delivered for discerning homeowners across Hampstead, Hampstead Heath, Belsize Park and North London.
A structured approach ensuring your basement project is delivered safely, on time and to the highest standards.
Detailed site investigation including trial pits, soil analysis and structural assessment to determine excavation depth, underpinning requirements and waterproofing strategy.
Architectural drawings, structural calculations, planning applications, building control submissions and party wall agreements managed seamlessly by our expert team.
Careful underpinning, excavation in controlled sequences, reinforced concrete construction and installation of comprehensive waterproofing systems throughout.
M&E installations, premium finishes, bespoke joinery, smart controls and final inspections, delivering a luxurious living space ready to enjoy.
Hear from clients who've transformed their homes with our basement conversions.
"They excavated a full basement under our Victorian house creating a stunning cinema room and gym. The engineering was flawless and neighbours were kept fully informed throughout."
"Converting our damp cellar into a beautiful wine room and guest suite exceeded all expectations. The waterproofing is exceptional and the finish is truly luxurious."
"Professional from start to finish. Party wall matters were handled diplomatically and the project was delivered on schedule. We now have an incredible self-contained annexe."
Based in Hampstead, we deliver premium basement conversions across North and North West London.
Hampstead Village, Frognal, Belsize Village, Swiss Cottage, Redington Road.
Primrose Hill, Regent's Park, Camden Square, Chalk Farm, Mornington Crescent.
West Hampstead, Queen's Park, South Hampstead, Kilburn, Brondesbury.
Abbey Road, Hamilton Terrace, Maida Vale, Lisson Grove, Little Venice.
Temple Fortune, Hampstead Way, North End, Childs Hill, Bigwood Road.
Canonbury, Barnsbury, De Beauvoir, Upper Street, Pentonville.
Highgate Village, Shepherd's Hill, Crouch End, Archway, Holly Lodge Estate.
Muswell Hill Broadway, Colney Hatch Lane, Alexandra Palace, Fortis Green.
Clear answers to common questions about basement excavations and conversions.
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