Choosing a Japanese knotweed contractor

1. Proper Accreditations & Professional Standards

Reputable knotweed removal companies should hold memberships with appropriate bodies such as the Property Care Association (PCA), CHAS, Builder’s Profile, SMAS, Safe Contractor and Constructionline Gold. These accreditations prove they follow industry standards, are properly trained, and are regularly audited for quality assurance.

Bonus points for BASIS and Amenity Standard, TrustMark, and Achilles accreditations too.

2. Nationwide Coverage & Fast Response

Knotweed spreads fast – so your removal company needs to move faster. Top knotweed removal companies offer nationwide coverage and rapid response times, ensuring you’re not left waiting when action is needed most.

If you need a prompt site visit - the best companies can make that happen.

3. Tailored Treatment Plans

No two infestations are alike. Professional knotweed contractors will assess your site and provide a bespoke treatment plan – whether that’s herbicide control, excavation, or a hybrid approach – based on your needs and long-term goals.

Cookie-cutter treatments = poor results. Avoid anyone offering a “one-size-fits-all” fix.

4. Clear, Transparent Pricing

Trustworthy knotweed removal companies provide detailed, transparent pricing. You should receive a full breakdown of services and costs upfront, with no hidden fees or vague estimates.

If the quote feels too good to be true… it probably is.

5. Insurance-Backed Guarantees (IBGs)

Any credible knotweed specialist will offer an Insurance-Backed Guarantee (IBG) – typically 10 years – to protect against regrowth. This is essential for property sales, especially if buyers or mortgage lenders request formal protection.

If they don’t offer an IBG? Walk away.

6. Expert Surveys & Accurate Identification

Quality knotweed removal companies will begin with a professional survey to identify the extent of the problem. Some also offer remote ID via photo uploads, giving you fast peace of mind before any site visit.

Misidentifying knotweed can cost thousands.

In a nutshell - Trust the professionals.

REMEMBER: EARLY IDENTIFICATION IS IMPORTANT

Whether you’re a homeowner, landowner or commercial entity, for peace of mind the expert advice is to get a knotweed survey carried out as early as possible. Trained surveyors can spot knotweed at any stage of its lifecycle, and catching it early on could reduce treatment or removal costs.

• Knotweed will put development and construction projects on hold.

• Knotweed on residential property may affect buying and selling.

• Knotweed on land will spread which may lead to legal implications.

• Getting rid of knotweed requires a qualified contractor.

This article was written by Japanese Knotweed Ltd.