At SE Knotweed, a PCA-approved contractor is a firm audited by the Property Care Association to issue insurance-backed guarantees a lender accepts, which is what a valuer looks for behind a plan.
At SE Knotweed, a PCA-approved knotweed contractor is a firm audited by the Property Care Association, the trade body for invasive weed control, to a standard that lets it issue insurance-backed guarantees a mortgage lender accepts. The approval covers technical competence, method statements and the surveyor's qualifications, and it is checked rather than self-declared.
We hold PCA approval, TrustMark registration (licence 2902558) and the CSJK surveying qualification. That combination is what a valuer looks for behind a management plan, because it means the plan and the guarantee come from an audited source. Contact us to discuss a survey and a plan for your property.
Lenders look for a PCA-approved firm because they will only accept a management plan and an insurance-backed guarantee from an audited contractor, and PCA membership is the audit they recognise. The guarantee moves the future knotweed risk off the property, and its value depends on the firm behind it being competent and monitored.
An unaccredited firm may treat a stand perfectly well but cannot usually issue paperwork a lender accepts, which leaves a sale stalled. That is why, as our mortgages page explains, accreditation is the practical difference between a plan that unblocks a sale and one that does not.
The PCA audit covers technical competence in identifying and treating invasive weeds, the quality of method statements and management plans, the surveyor's qualifications, and adherence to the industry code of practice. Members are reassessed rather than approved once, so the standard is maintained over time.
It sits alongside TrustMark, the government-endorsed scheme that vets trading standards, consumer protection and dispute resolution. Together they check both the technical work and the way the business treats customers, which is why we hold both rather than relying on a single badge.
The insurance-backed guarantee works by an insurer standing behind the contractor's own guarantee, so that if the firm ceased trading the cover would still fund the further treatment the guarantee promises. It commits an audited contractor to returning and re-treating at no cost if regrowth appears within the term, usually up to 10 or 15 years.
That backing is what makes it acceptable to a lender, because the protection does not depend on the contractor still being in business years later. Our guarantee page explains the cover in full, and we issue it with the management plan.
SE Knotweed holds PCA approval for invasive weed control, TrustMark registration under licence 2902558, and the CSJK qualification, Certified Surveyor in Japanese Knotweed, for our surveying. These are the credentials we work under, and we name them plainly rather than implying memberships we do not hold.
We are not INNSA members and we are not RICS-regulated, though we assess every case against the public RICS 2022 professional standard and its management categories A to D, which is the language a valuer reads. Being clear about what we do and do not hold is part of how a lender and a solicitor can rely on our reports.
You check a contractor is genuinely accredited by looking them up on the Property Care Association and TrustMark registers rather than taking a logo on a website at face value, because the badge means nothing if the membership is not current. A real member appears on the public register with their trading name.
It is worth doing before you instruct anyone, because a plan and guarantee from a firm that is not actually approved may not satisfy your lender. We are happy to point you to our entries so you can confirm them, and then arrange a survey for your property.
INSURANCE-BACKED GUARANTEE
An insurance-backed guarantee from an audited contractor commits to returning and re-treating at no further cost if regrowth appears within the term. It is the document that reassures a mortgage lender, because it moves the future risk off the property. The term is confirmed with your plan.
Tell us the address and what a surveyor flagged. We confirm the plant, record the RICS category and set out the figures.