Those Victorian terraces around Sutton High Street weren't built on guesswork – proper foundations matter just as much today. Whether you're extending that 1930s semi in Cheam or building from scratch near Rose Hill, getting the groundwork right determines everything that follows.
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Sutton's mix of London clay and occasional chalk deposits creates specific challenges for foundation work. Properties near Carshalton Ponds face different ground conditions than those up towards Belmont. Years of working across SM postcodes means understanding exactly what lies beneath – from the stable ground near Wallington station to the trickier spots where old streams once ran through North Cheam.
Strip foundations suit most Sutton properties, particularly the inter-war housing stock common in SM2. Deeper trench fill becomes necessary where mature trees line streets – those beautiful oaks along Cheam Common impact ground moisture significantly. Modern raft foundations prove ideal for extensions where existing Victorian footings need protecting, especially common in the conservation areas around Carshalton village.
Local building control officers know our work from countless projects across Sutton borough. Every foundation receives proper certification, with calculations verified against the specific ground conditions found from Rosehill to Benhilton.
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Standard strip foundations for a single-storey extension typically range £3,000-£5,000. Full house foundations on a typical Sutton plot run £8,000-£15,000, though tree roots near boundaries or poor ground can push costs higher.
Absolutely – from the Broadway down to Woodcote, including all SM1, SM2 and SM3 areas. Regular projects span Cheam Village to Worcester Park borders, Carshalton Beeches to Hackbridge.
Most residential foundations need 7-10 days including excavation, concrete pour and initial curing. Larger projects or difficult access (common in older Sutton streets) might extend to 14 days.
Each foundation carries decade-long structural warranty coverage. This includes protection against settlement, supported by professional indemnity insurance and full compliance with current building regulations.
Often yes – particularly relevant for Sutton's older properties. Victorian houses around Carshalton often need partial underpinning when adding extensions. Mini-pile solutions work well where access is tight or ground conditions are challenging.
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