07450 310772sales@uhmbasements.co.uk FMB  ·  Delta Registered  ·  £10M Insured  ·  25-Year Warranty About Services Areas Our Work Reviews Contact 07450 310772Book a site visit Basement specialists · Wimbledon SW19 # Basement specialistsin Wimbledon ,Village, Park & SW19. Basement excavations, conversions and waterproofing across Wimbledon: the Village, Wimbledon Park, Wimbledon Hill, South Wimbledon and West Wimbledon. Larger family homes, deeper plots and conservation controls, UHM has delivered 18+ basements across SW19 and SW20. Book a free site visit 07450 310772 Our own 25-strong team · Free site visit and quote · 25-year warranty. 150+ Basements excavated 17 yrs Trading since 2009 25 yr Waterproofing warranty £10M Insurance cover FMB Federation member Local coverage ## Wimbledon plots are bigger, and so are the basements. Wimbledon differs from most of our South London workload: larger detached and semi-detached properties, deeper rear gardens, more Edwardian and 1930s stock than tight Victorian terrace, and conservation area controls across most of the Village. The result: Wimbledon basements are typically larger, more design-heavy and more consent-intensive than Clapham or Balham equivalents. Coverage All SW19 and SW20 postcodes, plus adjoining SW17 (Wandsworth Common), SW18 and KT-borders. Deepest coverage in Wimbledon Village, Wimbledon Park, South Wimbledon, West Wimbledon and Copse Hill. Response time Call or email and a director will get back to you to arrange a free site visit at a time that suits you. Property types Edwardian family homes off Ridgway and Copse Hill, Victorian villas in the Village conservation area, 1930s semi-detached houses around Wimbledon Park and South Wimbledon, and larger detached homes on Parkside. Common needs Full basement excavations for gyms, cinemas and pools under detached homes; underpinning to enable lower-ground floors under Edwardian semis; light wells and glazed rear-garden light wells; and waterproofing retrofits on older cellars. Services in Wimbledon ## Every basement discipline, under one roof. Every UHM basement discipline is delivered across Wimbledon. Each service link below explains the technical detail and warranty position on a typical SW19 / SW20 job. ### Basement Excavation Full new-build basements beneath Wimbledon homes, designed for sloped plots and retained ground. Learn more ### Basement Conversion Habitable Wimbledon lower-ground floors: gyms, cinemas, guest suites and pool plant rooms. Learn more ### Waterproofing & Tanking BS 8102 Type C cavity drainage across Wimbledon, Delta Registered, 25-year insurance-backed warranty. Learn more ### Underpinning Structural underpinning across Wimbledon's Edwardian and 1930s foundations, Temporary Works Coordinator on every job. Learn more ### Cellar Conversion Convert existing Wimbledon cellars into dry, warranted rooms, minimal disruption. Learn more ### Damp Proofing Diagnostic damp surveys across Wimbledon, targeted damp-proofing, no scattergun tanking. Learn more ### Sump & Pump Systems Twin-pump, alarmed sump systems installed and commissioned across Wimbledon, mechanical backbone of a dry basement. Learn more ### Basement Extension Downward extensions in Wimbledon where outward extension is restricted, full planning and design-build. Learn more ### Light Well Installation Engineered light wells for large Wimbledon plans: glazing, drainage and edge protection included. Learn more Why choose UHM in Wimbledon ## Why Wimbledon homeowners choose UHM. Wimbledon basements are bigger-budget, longer-programme projects, often 8–12 months on site. That timeline needs a single accountable contractor from first survey to sign-off, which is exactly how UHM is set up. ### One accountable team, start to finish Recent and live projects across Wimbledon Village, Wimbledon Park, Parkside and South Wimbledon. Every one delivered by our 25-strong directly-employed team. ### Conservation-area fluent Wimbledon Village is a conservation area with Article 4 restrictions. We handle Merton Council conservation area consent, tree protection and planning liaison as part of our standard scope. ### Design-and-build capacity Wimbledon projects are more design-heavy than most South London terraces. UHM's in-house co-ordination | one team from excavation to joinery | reduces design-to-site translation errors and warranty gaps. Location-specific challenges ## The specific problems Wimbledon basements face. Wimbledon's mix of hill topography, London Clay, deeper plots and heritage controls produces a distinct set of basement risks. Every UHM design engineers them out from day one. ### Sloping plots & retained ground Wimbledon Hill and streets around the Village slope significantly. Retained ground on the uphill flank means engineered retention walls and drainage | not simply underpinning | are needed to keep excavations dry and stable. ### Conservation area consent Wimbledon Village and pockets of Copse Hill are conservation areas, with Article 4 removing permitted development rights. Light wells, external stairs and any external alteration need consent. We plan and secure it before starting on site. ### London Clay shrink-swell SW19 sits largely on London Clay. Long summer droughts and mature garden trees combine to produce seasonal ground movement | we design underpinning and retention sequences that expect it, not assume it away. ### Long programmes need progress discipline The bigger Wimbledon projects run 8–12 months. That length punishes contractors who lose weekly progress control. Weekly reporting, fixed programme dates and single-point director accountability are UHM defaults. Our process ## Structured stages, no shortcuts. Every UHM project, whether in Wimbledon or elsewhere in London, runs through the same disciplined sequence. You'll always know what's happening next, who's doing it and when it completes. - 01 ### Free Wimbledon site visit Director-led survey of your SW19 or SW20 property | measured, photographed and condition-noted. - 02 ### Fixed written quote Structural strategy, BS 8102 waterproofing spec and Merton Council planning notes | priced in writing. - 03 ### Consents & Party Wall Building Control, Party Wall Awards where required, conservation area consent for Wimbledon Village | all managed by UHM. - 04 ### Build on-site Directly-employed team on your Wimbledon site. Neighbour protection, weekly reporting. - 05 ### Handover & warranty Sign-off, twin-pump commissioning, 25-year structural and waterproofing warranties. Frequently asked ## Real answers for Wimbledon. 07450 310772Message us ### Do you serve Wimbledon? Yes. Wimbledon SW19 and SW20 are core UHM areas with completed basement projects across the Village, Park, South Wimbledon and West Wimbledon. ### How fast can you reach Wimbledon? Get in touch by phone or email and we will arrange a free, director-led site visit at a time that suits you. ### How much does a Wimbledon basement cost? Wimbledon basements are typically larger and more design-heavy than tight-terrace projects further north, but every quote is written after a real site visit. Ground, retention, conservation controls and finish spec dominate cost. ### Do you handle Merton Council planning and conservation area consent? Yes. UHM manages Merton Building Control, Party Wall notices and, inside the Wimbledon Village conservation area, conservation area consent and Article 4 liaison as part of the standard scope. ### Can you build basement gyms and cinemas in Wimbledon? Yes, Wimbledon plots are typically big enough for full leisure-programme basements: gyms, cinemas, plant rooms, wine stores. UHM co-ordinates design, structure, waterproofing and finishes under one contract. ### Do you work on Wimbledon Village listed and heritage properties? Yes, subject to listed building consent. Listed buildings require slower, more careful sequencing and more consent time, we plan for it in the programme, and we won't quote a heritage project until we've seen it. Nearby areas we cover ### Serving South & West London - Putney - Wandsworth - Clapham - Balham - Richmond upon Thames - Chelsea - Kensington - London (all boroughs) Explore services ### Full basement discipline - Basement Excavation - Basement Conversion - Waterproofing & Tanking - Underpinning - Cellar Conversion - Damp Proofing - Sump & Pump Systems - Basement Extension - Light Well Installation Book your free site visit ## Book your Wimbledon site visit. Free, director-led and no pressure. Especially useful on larger Wimbledon plots: we'll walk your garden, discuss feasibility and price the work in writing. - Free site visit - Free written quote - 25-year warranty - £10M insurance - Directly-employed teamRequest your free quote 07450 310772 Or return to the homepage · read about UHM. Underhouse Management Ltd, London's structural basement specialists. A directly-employed team of 25, delivering meticulous below-ground work across the capital's finest addresses. Established 2009. FMB·Delta Registered·Considerate Constructors ### Services - Basement Excavation - Basement Conversion - Waterproofing & Tanking - Underpinning - Cellar Conversion - Basement Extension ### Areas Served - London - Wandsworth - Clapham - Wimbledon - Putney - Balham - Chelsea - Kensington - Richmond upon Thames ### Contact - 07450 310772 - sales@uhmbasements.co.uk - Unit C220A, Trident Business Centre,89 Bickersteth Rd, London SW17 9SHBook a site visit © 2026 Underhouse Management Ltd (t/a UHM Basements). Company No. 06968521. Privacy Policy·Terms & Conditions·Cookie Policy·25-year warranty · £10M insurance Call nowBook a site visit