Heavy structural works, load-bearing masonry removal, underpinning, basement waterproofing (Type A & C), and foundation stabilization.
Removing internal load-bearing walls or excavating subterranean basements requires uncompromising structural precision. HCDB Group's chartered structural engineers calculate exact load paths, design heavy RSJ box frames, and supervise underpinning works across tight London townhouse sites.
Basement dryness relies on advanced waterproofing engineering. We install Type C cavity drain membrane systems complete with perimeter channels and dual battery-backed sump pumps, guaranteeing a completely dry subterranean environment for home cinemas, wine cellars, or gyms.
Subterranean basement conversions in London typically require 20 to 32 weeks, depending on soil conditions, underpinning depth, and fit-out requirements.
All our Type C cavity drainage membrane basement installations include a 10-year insurance-backed waterproofing guarantee.
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