Japanese knotweed
A knotweed management plan has no signature the surveyor recognises. Why is the plan not part of the home survey just because it was in the kitchen drawer?
Because the knotweed plan in the kitchen drawer has no signature the surveyor recognises, it is not part of the home survey. A plan in a drawer is a separate paper. Being near the kettle does not bind it into the report. The survey is the inspection the surveyor signed. An unsigned management plan is not a section of that inspection. GOV.UK's knotweed guidance is about not spreading the plant. It does not turn a loose plan into the survey.
Last reviewed 24 October 2026. Written for buyers in England and Wales unless this answer says otherwise. No named surveyor has signed this page. It is general guidance, not a report on your house, and not legal advice.
What is the fuller explanation?
Sellers leave all sorts of paper in the kitchen: guarantees, old quotes, a plan from a firm the surveyor does not know. The surveyor can note that a document was pointed out. That note does not adopt the plan or confirm the treatment. RICS knotweed material is about how surveyors approach the plant. It is not a rule that every sheet in the drawer becomes part of the PDF. If the signature is missing, you do not have a plan the surveyor has endorsed.
Give the plan to the solicitor as a document that was in the house, and say the survey has not adopted it. Do not tell the lender the property has a live management plan solely because the pages exist. Do not invent a treatment distance the plan might have meant to state. Ask who wrote it, who was supposed to sign it, and whether any work was done. The home survey stands without that drawer. The plan is not inside it.
What should you ask your surveyor?
- Did you see a plan in the drawer, or a plan you were asked to adopt?
- Is there a signature on it that you recognise as part of your report?
- Should the plan stay outside the survey and with the solicitor?
What are the typical next steps?
- Keep the drawer plan out of the home survey.
- Tell the solicitor it was not signed as part of the report.
- Do not describe it to the lender as the survey's management plan.
Costs vary with the building and with who you instruct. Where this page does not cite a published figure, ask the surveyor, a relevant specialist, or your solicitor for a written quote. Do not treat a forum average as the price.
Also asked about this
If the plan names this address, has the survey adopted it?
No. An address on a loose plan does not make it part of the home survey. The surveyor has not signed it into the report.
Can you follow the plan's digging advice without advice?
Do not treat the plan as approved. GOV.UK's guidance is about not spreading knotweed. The unsigned plan is not the survey, and it is not an instruction to dig.