Mortgage lenders see Japanese Knotweed as a structural risk. If it’s on or near your property, it can:

• Lower the property’s market value
• Cause legal disputes between neighbours
• Delay or block home sales and purchases
• Trigger insurance or liability concerns

Many high-street lenders will reject or delay applications unless you can prove the Knotweed is under a formal management plan.

• A professional site survey from a recognised contractor
• A written treatment plan with start date and schedule
• Evidence of insurance-backed guarantees (in some cases)
• Ongoing monitoring or reports for up to 5 years

KnotEnd provides all of this — quickly, professionally, and with zero stress.

Whether you’re buying, selling, or re-mortgaging, we’ll assess your site and issue a tailored plan that satisfies your lender’s requirements.

• Site survey within 48 hours (in most areas)
• Treatment plan that suits your budget and timeline
• Documentation your solicitor can submit immediately
• Full support throughout your sale or purchase process

If you're already under offer or time-limited, let us know — we offer rush services when possible.

Can I sell a house with Japanese Knotweed?

Yes — but only if you’re actively managing it. You’ll need to disclose the presence and show proof of treatment. We help make that simple and legal.

Will a mortgage be refused if knotweed is nearby?

Not always — but most lenders want evidence that the risk is being controlled professionally. Our reports are accepted across the UK.

Do I need insurance-backed guarantees?

Some lenders do require this. If so, we can provide it as part of a documented plan or connect you with a covered guarantee partner.

Can biological treatment be approved by lenders?

Yes — when paired with a structured plan and professional monitoring. We build this into our documentation so you meet all formal criteria.