Do I need to disclose Japanese knotweed when selling? — Property Passport UK guide
Selling a Property

Do I need to disclose Japanese knotweed when selling?

Why material plant issues belong in proper disclosure channels, and why guesswork fails.

Published: 20 Apr 2026 · Updated: 20 Apr 2026 · 8 min read

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Treat it as material until advised otherwise

Knotweed can affect value and insurability. Your solicitor guides you on forms.

Professional identification

Do not rely on photos from a phone unless you know what you are doing.

Management plans

If treatment exists, file it.

What to check next

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Frequently asked questions

Is this legal, survey, or mortgage advice?

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Disclaimer: Not legal advice, not surveying advice, not mortgage advice.

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