Guide
Japanese knotweed survey cost: what UK specialists publish
Updated
A Japanese knotweed survey costs a median of £299 across the five UK specialists that print a survey price on their own page, from £250 for a domestic survey to £600 for a commercial site appraisal, read in October 2026. The survey is what produces the management plan a lender or buyer asks to see.
The published prices
| Specialist | What the price covers | Published price |
|---|---|---|
| Japanese Knotweed Group | Survey | from £250 |
| JKR Leeds | Conveyancing support documentation | from £250 |
| Japanese Knotweed Specialists | RICS and PCA-accredited survey | from £299 + VAT |
| Japanese Knotweed Expert | Survey and management plan, typical domestic property | £312 including VAT |
| PBA Solutions | Commercial site appraisal and findings report | from £600 |
Sources: Japanese Knotweed Group, JKR Leeds, Japanese Knotweed Specialists, Japanese Knotweed Expert and PBA Solutions (every row, with its source).
What to ask before you book
- Is the survey fee deducted from the treatment if you go ahead?
- Will the report and management plan be accepted by your buyer's or your own mortgage lender?
- Does the surveyor follow the RICS risk categories a valuer will use?
Published figures are what each specialist advertises on its own page, read through our fetch box on the date shown.