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 · Putney SW15 # Basement specialistsin Putney ,riverside SW15. Basement excavations, conversions and waterproofing across Putney: Lower Richmond Road, Putney Heath, West Putney, East Putney and Roehampton borders. 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 Delta Registered installers Local coverage ## Putney basements need river-aware waterproofing. Putney sits on the south bank of the Thames, with a water table high enough that any basement here has to be waterproofed to riverside standards, not standard suburban ones. UHM has delivered more than twenty basements across SW15, from Victorian terraces on Lower Richmond Road to Edwardian houses on the Heath, and every one is Type C cavity drainage with twin-pump, alarmed sump as the minimum specification. Coverage All SW15 postcodes and neighbouring SW18, SW14 and SW19. Deepest coverage in Putney town centre, Lower Richmond Road, West Putney, East Putney, Putney Heath and Roehampton borders. 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 Victorian riverside terraces, Edwardian semi-detached family homes, larger detached houses around Putney Heath, and mansion blocks along the Upper Richmond Road and Lower Richmond Road. Common needs Flood-response waterproofing and pump upgrades for riverside cellars, full basement excavations for family kitchen-diners, cellar conversions off the High Street, and underpinning to enable lower-ground floors in older housing stock. Services in Putney ## Every basement discipline, under one roof. Every UHM basement discipline is delivered across Putney. Each service link below explains the technical detail and warranty position on a typical SW15 job, with river-proximity groundwater factored in. ### Basement Excavation Full new-build basements beneath Putney homes, retention and dewatering designed for Thames-side water tables. Learn more ### Basement Conversion Fully habitable Putney lower-ground floors, kitchens, cinemas, guest suites, matched ceiling heights. Learn more ### Waterproofing & Tanking BS 8102 Type C cavity drainage, critical in riverside Putney, backed by our 25-year insurance-backed warranty. Learn more ### Underpinning Structural underpinning across Putney's Victorian and Edwardian foundations, Temporary Works Coordinator on every job. Learn more ### Cellar Conversion Convert existing Putney cellars into dry, warranted rooms, no dig, minimal disruption. Learn more ### Damp Proofing Diagnostic damp surveys across Putney, targeted damp-proofing, no scattergun tanking. Learn more ### Sump & Pump Systems Twin-pump, alarmed sump systems installed and commissioned across Putney, non-negotiable near the Thames. Learn more ### Basement Extension Downward extensions in Putney where outward extension isn't allowed, full planning and Party Wall service. Learn more ### Light Well Installation Engineered light wells for deep Putney plans: glazing, drainage and safety edge detailing included. Learn more Why choose UHM in Putney ## Why Putney homeowners choose UHM. Putney's proximity to the Thames raises the technical bar on every basement job here, and lowers the tolerance for waterproofing shortcuts. Directly-employed installers, insurance-backed warranties and BS 8102 discipline matter more here than almost anywhere else in our footprint. ### One accountable team, start to finish Live and recent projects across Lower Richmond Road, Putney Heath, West Putney and East Putney. Every one delivered by our 25-strong directly-employed team. ### River-aware waterproofing strategy Every SW15 basement is designed to BS 8102 with Type C cavity drainage as the primary defence and twin-pump, alarmed sump systems as standard | not upsells. Delta Registered Installers throughout. ### 25-year warranty on riverside jobs Even on properties within metres of the Thames, our 25-year structural and waterproofing warranties apply | insurance-backed by £10M public liability. That warranty is only credible with our own team on site. Location-specific challenges ## The specific problems Putney basements face. Putney's Thames-side location, alluvial soils and dense Victorian and Edwardian stock make riverside basement engineering the dominant concern. Every UHM design starts here. ### High water table & hydrostatic pressure Groundwater along the Thames in SW15 sits close to slab level for most of the year, and higher after wet winters. Basements here need continuous mechanical dewatering strategy | sump-and-pump | not passive tanking alone. ### Alluvial ground near the river Streets close to the Thames sit on alluvial and made-ground rather than pure London Clay. Retention, dewatering and underpinning sequences have to be designed for it | assumptions borrowed from Clapham or Balham do not apply. ### Flood-zone considerations Parts of riverside Putney fall inside Environment Agency flood zones. That does not stop basement work, but it does change waterproofing strategy, pump redundancy and Building Control conversations. UHM manages that from day one. ### Party walls in dense terrace streets Putney's terraced streets are as tightly packed as Clapham's, with party walls on both flanks. UHM handles Party Wall notices and awards as part of the standard scope. Our process ## Structured stages, no shortcuts. Every UHM project, whether in Putney 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 Putney site visit Director-led survey of your SW15 property | measured, photographed, condition-noted, with river-proximity groundwater notes. - 02 ### Fixed written quote Structural strategy, Type C waterproofing spec and Wandsworth Council planning notes | priced in writing. - 03 ### Consents & Party Wall Building Control, Party Wall Awards for Putney's terraces | all managed by UHM. - 04 ### Build on-site Directly-employed team on your Putney site with river-aware dewatering and pumping strategy. - 05 ### Handover & warranty Sign-off, twin-pump commissioning, 25-year structural and waterproofing warranties. Frequently asked ## Real answers for Putney. 07450 310772Message us ### Do you serve Putney? Yes. Putney SW15 is a core UHM area with completed basement projects across Lower Richmond Road, Putney Heath, West Putney and East Putney. ### How fast can you reach Putney? Get in touch by phone or email and we will arrange a free, director-led site visit at a time that suits you. ### Can basements be built safely near the Thames in Putney? Yes: provided waterproofing, dewatering and pump strategy are designed for riverside water tables from day one. That is exactly how UHM designs every SW15 basement, backed by our 25-year insurance-backed warranty. ### How much does a Putney basement cost? Every Putney quote is written after a real site visit. Riverside waterproofing, dewatering and pump redundancy affect cost more here than further south, we price it all in writing before you commit. ### Do you handle Wandsworth Council Building Control and Party Wall Awards? Yes. UHM manages Building Control and Party Wall notices, awards and adjoining-owner surveyor liaison as part of the standard scope across SW15. ### Do you work in the Environment Agency flood zone in Putney? Yes, subject to design-appropriate waterproofing and pump redundancy. We'll flag any flood-zone implications at the free site visit before we quote. Nearby areas we cover ### Serving South & West London - Wandsworth - Wimbledon - Richmond upon Thames - Clapham - Balham - 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 Putney site visit. Free, director-led, riverside-aware. Especially useful on Thames-close SW15 addresses, we'll walk you through waterproofing strategy before we price the work. - 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