French Drains in New Malden designed to move groundwater away from your home and garden. We install discreet drainage runs with the right gradient, clean finishes, and reliable outlets.
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If your lawn stays soggy after rain or water gathers by the patio, a French drain can redirect it before it causes damage. We install drainage systems across KT3, including near New Malden High Street and Manor Park. Our approach is practical: capture water in a gravel-filled trench, move it through a perforated pipe, then discharge it safely. The result is a garden you can actually use, even through wet spells.
New Malden’s mix of 1930s semis, Edwardian houses and modern apartments often comes with compact side access and established gardens. We’re used to protecting paving, fences and planting while we excavate and reinstate. Whether you’re close to Beverley Park or heading towards Motspur Park, we tailor the run lengths and outlet points to suit the plot. You get drainage that works without turning the garden into a building site.
We start with a site check to identify where water is entering and where it can legally and safely exit. Then we set the gradient design, excavate the trench, install geotextile membrane, lay the perforated pipe, and backfill with graded gravel. Where needed, we build multiple runs to intercept water from different areas. Every job is finished with clear maintenance guidance, and workmanship is backed by our 10-year warranty.
Across the Royal Borough of Kingston upon Thames, gardens can suffer from heavy, compacted ground and runoff from neighbouring plots. In New Malden, access can be tight on 1930s semis, so we plan spoil removal, deliveries and parking to keep disruption down. We also consider nearby trees in parks and streets, selecting membranes and gravel grades that resist root intrusion and silting. If discharge options are limited, we design alternative outlet connections that remain compliant.
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Costs vary with length, depth, access and where the water can discharge. As a guide, small problem areas might start around £900–£1,800, while longer runs for side returns or rear gardens are often £2,000–£4,500+. Multiple runs, deeper excavation, difficult spoil removal, or adding new outlet connections can increase the price. We provide a site-specific quote after checking levels and ground conditions.
Most domestic installations take 1–3 days, depending on run length, depth and reinstatement. A short trench with straightforward access can be completed in a day, while multiple runs or a complex outlet connection may take longer. Timescales are also affected by ground conditions, hidden services, and whether we’re reinstating turf, gravel paths or paving. We’ll confirm a schedule before starting.
French drains in gardens are usually classed as permitted works and don’t need planning permission. However, rules can change if you’re working near a boundary, altering levels significantly, or dealing with listed buildings or conservation considerations. Discharging water must be done correctly and not cause issues for neighbours or public land. We check practical constraints and advise on any council or drainage requirements before installation.
Yes. Our French drain installations come with a 10-year warranty covering workmanship and installation integrity, including correct pipe placement, membrane use, and stable backfill. It’s designed to give you confidence that the system will perform as intended when installed and maintained properly. The warranty doesn’t cover blockages caused by misuse, major ground movement, or damage from later building works, but we’ll advise on prevention and maintenance.
We can tailor the system to your garden and the problem source. Options include different pipe diameters, gravel grades for faster flow, and heavier-duty geotextile membrane where silt is an issue. We can also add inspection points for easier maintenance, connect to existing drainage where suitable, or design multiple runs to intercept water from lawns and side passages. We’ll recommend the best combination after assessing levels and outlet choices.
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