Those grand Victorian terraces lining Wandsworth's streets weren't built on wishes - they need solid groundwork beneath them. Whether you're extending your Edwardian semi or sorting drainage issues that plague so many properties near the Common, proper foundations make all the difference.
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Wandsworth's mix of period properties and modern developments throws up some interesting groundwork challenges. Clay soil that shifts with the seasons, old Victorian foundations that need underpinning, sloping gardens typical of properties between Southfields and Earlsfield - each project tells its own story. Having worked on everything from basement conversions in those spacious SW18 townhouses to complete garden overhauls in compact terraced plots, the variety keeps things interesting.
Modern groundwork goes far beyond simply digging holes. Ground investigation reveals what's lurking beneath - from old air raid shelters to forgotten Victorian soakaways. Precise excavation protects neighbouring properties, particularly crucial when you're working on terraced streets where one wrong move affects everyone. Proper drainage design prevents those winter floods that turn Wandsworth gardens into swamps, while reinforced concrete work creates foundations strong enough for ambitious extensions.
Twenty years tackling Wandsworth's quirky geology builds real expertise. Local contractors understand why properties near King George's Park need different drainage solutions than those up towards Battersea.
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Basic foundation work for a single-storey extension usually runs £4,000-£8,000, though those tricky sloping plots common around Garratt Lane often push costs higher. Complete garden groundworks including drainage typically range £6,000-£15,000 depending on access and soil conditions.
Absolutely - from the riverside developments near Wandsworth Bridge through to residential streets bordering Wimbledon Park. Regular projects span Southfields station area right across to Battersea boundaries.
Underpinning a bay window might take 5-7 days, while full extension foundations usually need 2-3 weeks including concrete curing time. Those narrow Victorian side returns can add complexity.
All foundation and structural groundworks carry decade-long protection, backed by comprehensive insurance. This covers both the concrete work itself and any settlement issues - essential peace of mind when you're building on London clay.
Narrow alleyways and shared access are standard here. Mini-diggers, wheelbarrows, and sometimes good old-fashioned hand digging get the job done. Most Victorian terraces only offer side access under 900mm wide - no problem with the right approach and equipment.
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