Those Victorian terraces along Putney Hill didn't survive 150 years by chance - solid foundations make the difference. From period property underpinning to contemporary extensions, getting the groundwork right matters in SW15's varied terrain.
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Between the Thames flood plain and Putney Heath's clay soils, foundation work here demands local knowledge. Every project starts with understanding your specific ground conditions - whether that's dealing with the sandy deposits near the river or the London clay that dominates properties towards Roehampton. Years of working across SW15 means recognising which approach suits each street's unique geology.
Strip foundations suit most Putney gardens, though the narrower plots near East Putney station often require engineered solutions. Raft foundations prove invaluable where tree roots from those magnificent plane trees affect soil stability. Modern concrete mixes incorporate steel reinforcement precisely calculated for load distribution - crucial when supporting rear extensions that maximize every square metre of these valuable plots.
Local structural engineers regularly refer clients our way - reputation built project by project across Putney's neighbourhoods. Barnes residents particularly value our minimal-disruption approach, essential when machinery access means navigating those characterful but tight Victorian streets.
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Standard strip foundations for a single-storey extension generally range £8,000-£15,000, while underpinning Victorian properties typically starts around £25,000. Each quote reflects your specific ground conditions and structural requirements.
Absolutely - from riverside properties near Putney Bridge to homes backing onto Wimbledon Common. Regular work takes us through Putney Heath, across to Barnes Common, and throughout the SW15 postcode.
Most residential foundations cure sufficiently within 7-10 days, though complex underpinning might extend to 3-4 weeks. Weather and access constraints occasionally add time.
Each foundation carries comprehensive 10-year structural warranty documentation. This covers both materials and workmanship - essential paperwork for building control sign-off and future property transactions.
TPO compliance forms part of our planning process. Special root-protection techniques and adjusted foundation depths accommodate protected trees whilst maintaining structural integrity - particularly relevant near Putney Heath where mature oaks require careful consideration.
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