Japanese knotweed cost calculator
Answer four quick questions and get an indicative price range for treating your knotweed — based on typical UK costs by infestation size, proximity to buildings, method and guarantee. It's a guide only: the accurate way to price a job is a free site survey, so use it to set expectations, then get real quotes.
Herbicide programme: professional glyphosate applied over several seasons. Lowest cost, but the slowest — best when there's no rush to build or sell immediately.
Indicative estimate only. Actual price depends on a site survey.
These figures reflect typical UK prices in 2026 for professional treatment with an insurance-backed guarantee. Real quotes vary with the exact stand size, species spread, ground conditions, disposal requirements and your region. The only way to get an accurate, fixed price is a free site survey — which is what our vetted specialists provide. Compare up to three before you decide.
