Those steep Carshalton gardens need proper groundwork before any landscaping begins. Whether it's dealing with chalky soil near Carshalton Ponds or creating level terraces on the hillside properties around Butter Hill, groundwork sets everything else up for success.
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Carshalton's mixture of Victorian terraces and 1930s semis brings unique challenges beneath the surface. Clay soil expands and contracts through our seasons, while chalk deposits near the Wandle create drainage puzzles. Getting foundations right means understanding local ground conditions - something that takes years of digging in SM5 postcodes to master properly.
Excavation depth depends entirely on what sits above. Patios need 150mm of hardcore beneath, while driveways supporting cars require 250mm minimum. Add proper membrane barriers, correct aggregate grades, and crucially, falls directing water away from house walls. Each layer gets compacted separately because shortcuts here mean sinking surfaces within eighteen months.
Twenty-three years working between Wallington and Hackbridge builds local knowledge you can't Google. Recognising where old Anderson shelter foundations hide, knowing which roads flood after heavy rain - these details matter when planning drainage runs.
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Basic patio preparation runs £1,800-2,500 for 30sqm areas. Full driveway excavation and base installation typically £3,500-5,000 depending on existing surface removal needs.
Absolutely - Sutton properties, Hackbridge's new developments, and throughout Wallington. Most projects fall within four miles of Carshalton station.
Patio bases usually complete within 2-3 days. Driveway groundworks generally need 4-5 days including excavation, installation and compaction stages.
All groundwork carries ten-year structural warranties. This covers settlement, drainage failures, and base integrity - properly documented for your peace of mind.
French drains and soakaway systems transform boggy gardens. We'll assess natural water flow, install perforated pipes at correct depths, and connect to suitable drainage points.
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