Defect investigations
Japanese Knotweed Survey in North West England
Knotweed derails mortgages, not houses. We identify it, place it in the current RICS management category, and set out the treatment plan and insurance-backed guarantee your lender will need.
KJonline
Free surveying guidance across North West England
Hi, I'm KJ. Tell me about the property or the surveying advice you need and I'll help you work out the right next step.
RICS regulated
Every surveyor on the KJ Surveyors network is regulated and fully insured.
Booked in minutes
Tell KJ the address and deadline — no phone tag, no waiting for callbacks.
Plain-English reports
Photographed findings, costs and next steps — not 90 pages of disclaimers.
Independent advice
We work for you, not the estate agent or the lender.
What's included
- Species identification and extent mapping
- RICS management category assessment
- Neighbouring land and boundary risk
- Treatment plan options with costs
- Guidance on lender and legal requirements
How it works
- 1
Tell KJ what you need
Two minutes in chat or on 01706 318200. KJ confirms a japanese knotweed survey is the right call for your property — and tells you straight if a cheaper option would do.
- 2
Fixed fee and a booked date
You get a written fee proposal with the scope, the surveyor attending and their credentials. No fee is taken until you accept.
- 3
The site visit
A local surveyor attends, photographs everything relevant and speaks to you on the day with the headline findings.
- 4
Your survey report
Within 2–3 working days after the visit. Plain English, photographed, with costed next steps — and a free call to talk it through.
What it costs in North West England
Real 2026 ranges for this survey. You always get a fixed written fee before anything is booked — nothing is charged until you accept it.
| Property | Typical fee | Time on site |
|---|---|---|
| Flat or 1–2 bed terrace | £215 – £385 | 1 hour |
| 3 bed semi-detached | £250 – £450 | 1 hour |
| 4 bed detached | £315 – £565 | 1 hour |
| 5+ bed, period or heavily extended | £375 – £675 | 1 hour |
Fees include VAT where applicable. See all survey prices.
Japanese Knotweed Survey: your questions
Related services
KJonline
Free surveying guidance across North West England
Hi, I'm KJ. Tell me about the property or the surveying advice you need and I'll help you work out the right next step.