Japanese knotweed law
This page covers Japanese knotweed law, what you need to know & who is responsible for Japanese knotweed and what to do if you find knotweed.
Professional Japanese knotweed removal across Greater London
Request a free quotation today or send us photographs for a quick identification assessment.
Your Local Japanese knotweed specialists
Have you discovered Japanese knotweed on your property in London? Whether it’s growing in a residential garden, on commercial land or delaying a construction project, our experienced specialists provide professional Japanese knotweed removal services throughout Greater London.
From free identification and site surveys to herbicide treatment, excavation and Knotweed Management Plans, we’ll recommend the most effective solution based on your property, timescales and future plans.
Our qualified surveyors work with homeowners, landlords, developers, housing associations, commercial businesses and local authorities across London, helping safely manage Japanese knotweed while supporting property sales, redevelopment and long-term land management.
Fill in the contact form to enquire about our services, and one of the team will get in touch.
We are members of the Property Care Association and have a proven track record working successfully for local councils, developers, construction companies and private landowners. If you are selling or buying a property that is affected by Japanese knotweed, request your free* Japanese knotweed Survey.
* There are circumstances where fees for surveys will apply. Details HERE.
contact us or get a quote
Covering all London Boroughs
We provide Japanese knotweed removal services across every London borough, including:
Westminster, Camden, Islington, Kensington & Chelsea, Hammersmith & Fulham, Wandsworth, Lambeth, Southwark, Tower Hamlets, Greenwich, Lewisham, Bromley, Croydon, Barnet, Enfield, Ealing, Hounslow, Richmond upon Thames, Kingston upon Thames, Harrow, Brent, Hackney, Newham, Barking & Dagenham, Havering, Bexley, Merton, Sutton, Haringey, Redbridge, and Waltham Forest.
Wherever you’re located in Greater London, our surveyors can assess your property and recommend the most suitable treatment or removal solution.
Why Japanese knotweed is a growing concern in London
London’s mix of historic housing, major infrastructure, riverside developments and ongoing regeneration projects creates environments where Japanese knotweed can establish and spread.
It is commonly encountered on:
- Brownfield redevelopment sites
- Railway embankments
- Canal and river corridors
- Residential gardens
- Vacant land
- Commercial premises
- Development sites
- Public open spaces
For homeowners, Japanese knotweed can affect garden usability, property transactions and neighbour relationships. For developers, early identification and management can help reduce delays, minimise remediation costs and keep projects moving.
Our Japanese knotweed services in London
We tailor every recommendation to your property and project requirements.
Japanese Knotweed Surveys: Professional site inspections to confirm identification, assess the extent of the infestation and provide practical recommendations.
Herbicide Treatment: A cost-effective solution for long-term control where immediate excavation isn’t required.
Excavation & Removal: Complete removal of contaminated soils for developments, extensions and severe infestations requiring immediate remediation.
Knotweed Management Plans: Detailed management plans suitable for property sales, refinancing, development projects and lender requirements.
Root Barrier Installation: Prevent underground spread and protect neighbouring land during redevelopment or landscaping projects.
What does it cost to get rid of Jpaanese knotweed?
The average cost to remove Japanese knotweed in London varies, depending on the methods involved and the size of the affected areas. If it is identified and dealt with promptly, the costs of removing Japanese knotweed can be kept to a minimum. Long-term herbicide treatment is usually the most cost-effective control method. Our professionally delivered herbicide treatment programme will provide successful chemical control of Japanese knotweed within a period of 3-7 years.
Excavation of Japanese knotweed costs more than herbicide treatment due to labour, materials, waste removal and reinstatement costs. However, it ensures complete Japanese knotweed removal allowing free use or development of the property. We provide cost-efficient excavation due to our extensive experience whilst minimising waste volumes.
Following our professional surveys we will provide you with a no-nonsense, comprehensive report with no-obligation recommendations and quotes.
Japanese knotweed removal for London Homeowners
Many homeowners only discover Japanese knotweed when selling their property or after noticing unusual growth in the garden.
If you’ve found suspected knotweed, we can help you:
- Confirm whether it’s Japanese knotweed.
- Understand your treatment options.
- Prevent further spread.
- Protect your property’s value.
- Support future property sales with professional documentation.
Japanese knotweed services for Developers & Commercial clients
London’s continuous regeneration means invasive plants are frequently identified during enabling works and site investigations.
We support:
- Property developers
- Main contractors
- Housing associations
- Local authorities
- Utility companies
- Infrastructure projects
- Commercial landlords
Our services help minimise delays by providing practical remediation strategies tailored to programme and budget.
Construction site in Wembley tackles Invasive Weeds
In this case study, we look at some of the challenges faced by a large construction operation in Wembley, London when they ran into invasive weeds Japanese knotweed and Giant hogweed. Discover how our London team provided the best solution.
Our Four-Step Removal Process
1. Identification & Survey
We confirm whether the plant is Japanese knotweed and determine the extent of the infestation.
2. Site Report
You’ll receive a comprehensive report with recommendations and a fixed quotation.
3. Treatment or Removal
Our specialists carry out herbicide treatment, excavation or a combined solution.
4. Monitoring & Documentation
Where appropriate, we provide ongoing monitoring and documentation to support lenders, purchasers and future site management.
London Knotweed Services
Removing Japanese knotweed starts with a survey
FAQS
Can you remove Japanese knotweed permanently?
Yes. Depending on the site, we may recommend herbicide treatment, excavation or a combined approach to achieve the most appropriate long-term outcome.
Do you cover all London boroughs?
Yes. We provide surveys and treatment throughout Greater London and the surrounding counties.
Can Japanese knotweed affect selling my London property?
It can. A professional survey and, where appropriate, a Knotweed Management Plan can help provide clarity for buyers and lenders.
How quickly can you survey my property?
Survey availability varies by location, but we aim to offer appointments as quickly as possible across Greater London.
Why choose us
- Nationwide coverage with dedicated London surveyors
- Experienced invasive plant specialists
- Residential and commercial expertise
- Fully insured and accredited teams
- Herbicide treatment and excavation services
- Knotweed Management Plans
- Competitive quotations
- Responsive customer service
Our top clients
MEET YOUR TEAM
Being a nationwide company our surveyors and operatives are located up and down the UK. Find out more about our teams, their knowledge and experience, and why you can trust them to provide you with outstanding customer service.
