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Japanese Knotweed: Does It Stop You Selling Your House?

Japanese Knotweed: Does It Stop You Selling Your House?

Japanese Knotweed: Does It Stop You Selling Your House?

May 27, 2026

What Is Japanese Knotweed?

Japanese knotweed is an invasive plant species with an extensive underground root system capable of damaging building foundations, drainage, and hard surfaces. It was introduced to the UK in the 19th century and is now found across much of the country, including in Yorkshire and the Doncaster area.

Why It's Such a Problem for Sellers

Most UK mortgage lenders either refuse outright to lend on properties where knotweed is present, or require specialist treatment reports before they'll consider it. This dramatically limits your buyer pool to cash buyers — and many of those are deterred too.

Additionally, you are legally required to disclose known knotweed on the TA6 property information form. Failure to do so can lead to legal claims after sale.

The Cost of Treatment

Professional knotweed treatment can cost anywhere from £2,000 to £20,000 depending on the severity of the infestation, and typically requires a multi-year management plan with an insurance-backed guarantee before a lender will proceed.

Selling to a Cash Buyer Without Treating First

UK House Buyers assesses properties with Japanese knotweed and makes fair cash offers regardless of the infestation. We work across Doncaster, Nottinghamshire, Yorkshire, and the UK.

You don't need to treat the knotweed before approaching us. We factor the issue into our offer transparently, with no hidden deductions later in the process.

Click here to contact us today!

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