Quick Answer
Knotweed removal in the UK costs £1,500–£7,000 on average, depending on infestation size and method.
Cost by Method
| Method | Cost Range | Timescale | Notes |
|---|---|---|---|
| Herbicide | £1,500–£4,000 | 2–5 years | Cheapest, but knotweed remains underground |
| Excavation | £5,000–£15,000+ | 1–2 weeks | Immediate removal, higher cost |
| On-Site Burial | £4,000–£10,000 | 2–3 weeks | Needs space, avoids landfill |
| Screening | £7,000–£20,000 | 2–4 weeks | For construction/development |
FAQ
Q: Is excavation always necessary?
A: No. Herbicide treatment works well for most homes unless development is planned.
Q: Can DIY save money?
A: Rarely effective long-term. Professional treatment ensures compliance and guarantees.
About the Author
Written by Lee Roberts, Director of Japanese Knotweed Elimination Ltd, specialising in property-safe knotweed solutions since 2013.
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