JAPANESE KNOTWEED REMOVAL COSTS.
- Free survey - if you go ahead with a Management Plan
- 2 year payment plans available - spread the cost!
- Available to both Commercial and Residential clients
OUR AVERAGE COST FOR A DOMESTIC HOUSE FOR THE REMOVAL OF JAPANESE KNOTWEED WAS BETWEEN £2800 – £8000 IN 2024
JAPANESE KNOTWEED REMOVAL PRICING TABLE
| Size of Infestation | Area (0-5m²) | Area (5m²-10m²) | Area (10m²-20m²) | Area (20m²+) |
|---|---|---|---|---|
| Domestic houses | £1,500 - £2,500 | £2,500 - £3,500 | £3,500 - £4,500 | £4,500 - £8,000+ |
| Commercial Sites: | ||||
| Herbicide treatments over 5 years | £1,500 - £3,000 | £3,500 - £4,500 | £4,500 - £5,500 | £5,500 - £8,500+ |
| Reduced dig and root barriers with Herbicide treatments | POA | POA | POA | POA |
| Pick and sort / screening | POA | POA | POA | POA |
| Onsite relocation and herbicide (treatment bund / lay down area) | POA | POA | POA | POA |
| Burial on site | POA | POA | POA | POA |
| Full excavation and disposal (dig and dump) | POA | POA | POA | POA |
Domestic Houses (Herbicide Treatment)
Commercial Sites
Reduced dig and root barriers with Herbicide treatments
Pick and sort / screening
Onsite relocation and herbicide (treatment bund / lay down area)
Burial on site
Full excavation and disposal (dig and dump)
*Last updated: March 2025.* Our transparent pricing structure ensures no hidden costs.
As the table above illustrates, the costs for Japanese Knotweed removal from a residential site (domestic site), when using a herbicide treatment plan, typical costs range from £1500 – £8000.
*The costs outlined above are for estimate purposes only. There are many other variables such as location of your infestation or its proximity to both your home or water that can have an effect on price.
Popular Treatment Methods
Herbicide Treatment
Our ongoing Herbicide treatment plans use a special mix of glyphosate solutions made specifically for invasive plants. Unlike regular weed killers, our professional treatment:
- Gets deep into the underground stem network
- Uses direct stem injection for exact application
- Reduces harm to the environment through careful spraying
- Follows strict rules for using weed killers near water
Herbicide treatments are the more common choice for domestic infestations – for example, in the buying and selling of properties or to stop encroachment and legal issues. Find out more about our Residential Knotweed Treatments.
Excavation Method
For commercial, severe infestations or urgent projects, Japanese Knotweed Excavation is commonly used:
- Controlled removal with special equipment to stop spreading
- 7-metre excavation zone beyond visible plants to ensure complete removal
- Controlled waste disposal at licensed waste sites following all laws
- Restoring the area with clean soil and installing root barriers to block roots
For more information on commercial services – visit our Commercial Knotweed Removal page.
Our Expert Team
Clive Brooker MD
- CSJK PCA Qualified Surveyor (Property Care Association)
- 16+ years experience in invasive plant management
- NPTC certified in herbicide application (PA1/PA6)
Lesley Vachre
- CSJK PCA Qualified Surveyor (Property Care Association)
- PCA Board Member
- NPTC certified in herbicide application (PA1/PA6)
Find out more about our team.
CALL US NOW TO BEGIN THE TREATMENT AND CONTROL OF YOUR INFESTATION
Have you fallen in love with your dream home or cottage? Had the property surveyed and been informed there is Japanese knotweed on the land?
Have you been filled with dread reading about how Japanese knotweed can stop you getting a mortgage or selling your property? How it’s impossible to eradicate and how spreading this invasive weed is quick and easy? It’s true that Japanese Knotweed can be extremely difficult to control and remove. It’s also true that your Japanese Knotweed removal cost can be expensive.
However, we NEVER charge you for treatments you don’t need and we have a 100% success record in the control and treatment of infestations. Knotweed Services, can help you sell or purchase a property that has Knotweed present. We have helped thousands of customers throughout the UK and we can help you too.
The first thing to do is to confirm whether it is Japanese Knotweed. If you take a picture of the suspected weed and send it to us, we will identify whether or not it is Japanese Knotweed. This is a completely free and quick service – click here to start the process.
If you already know that you have Japanese Knotweed, call us on: 0121 725 6348 or 0800 689 4146, we can then give you an estimated cost immediately.
HOW DO YOU KEEP JAPANESE KNOTWEED REMOVAL COSTS SO COMPETITIVE?
We are professionals and we take our reputation seriously. Our methods work and we really can control and solve your Japanese Knotweed problem.
We deal with each infestation individually and we often offer our customers a range of suitable treatment options to choose from, these will have a range and time frames associated. Our surveys are detailed and we take every factor into account when deciding on a treatment plan.
- Each case is different and therefore different approaches are required for each treatment method. Each treatment method will have its own associated Japanese knotweed removal costs. There is no size fits all. Each management plan is tailored to our clients specific needs.
- We will keep your Japanese Knotweed costs as low as possible because you only pay for what you need and on occasion, we may present multiple treatment options. Giving you full control of the process from the very beginning.
Why
Customers Choose us
We’ve built our reputation on delivering reliable, effective Japanese knotweed solutions that property owners can trust. Our commitment to professional standards, transparent communication, and proven results has made us a preferred choice for both residential and commercial clients, including some of the most well known brands in the UK.
Success Rate
We’ve successfully removed Japanese knotweed for every client we’ve worked with—a 100% success rate.
Recommended
We surveyed 178 clients that were post-service and asked them if they’d recommend us to their friends. All 178 previous clients said they would!
Projects Completed
Throughout 2024, we completed over 300 Japanese Knotweed projects. This involved both commercial and domestic – with over 800 treatments carried out.
*Statistics verified with Independent Auditing, January 2025*
See What Our Clients Are Saying About Our Services
Dealing with a Japanese Knotweed problem doesn’t have to be overwhelming, our team has a 100% success rate in controlling Japanese Knotweed.
Read the genuine feedback from our happy customers below. You can also find more independent reviews on Google and Trustpilot. These reviews show our commitment to professional service, effective solutions, and peace of mind for property owners across the country.
NOT ALL KNOTWEED COMPANIES ARE CREATED EQUAL
The cost of removing Japanese Knotweed from your property shouldn’t be the only thing you take into consideration when selecting a Japanese Knotweed company to assist you. Choosing the correct company will help you to buy and/or sell your property quicker and easier. When choosing a Japanese Knotweed company you should also consider the warranty they provide, the reputation of the company and of-course the treatment costs involved.
The benefits of choosing Knotweed Services
Insurance Backed Guarantee
As part of our commitment to client peace of mind we are able to offer an insurance backed warranty on all sites.
This is aimed specifically at covering any costs that could be incurred should re-growth occur within a 10 year period.
Warranty includes quarterly inspection during the first twelve months after completion, followed by an annual site visit and report. This level of warranty follows in-depth research by our insurers as to our methods and our results to date.
5 Star Rating
Don’t just take our word for it – check out our 5 star ratings from real customers! We have lots of real, impartial reviews of our services on both Google and TrustPilot. We also have active social media accounts with lots of interaction and reviews from our customers.
Knotweed Services have worked extremely hard over the last decade to truly transform our Japanese knotweed treatments and service experience for all of our customers. Without doubt, Knotweed Services are delivering the best standards, control methods and customer service. Give us a call on: 0121 725 6348 or 0800 689 4146 to discuss your options.
Value For Money
We specialise in both the domestic and commercial removal of Japanese Knotweed. We guarantee removal and will help you avoid legal action from future occupants and neighbouring properties.
We regularly price check our services against other well known Japanese Knotweed Companies and can confidently state that we provide the best value money service available, not to mention:
- Free Identification
- Free Japanese Knotweed Site Surveys*
- 5 Star customer care and support
A LITTLE MORE ABOUT JAPANESE KNOTWEED
Perhaps a dead giveaway is that Japanese knotweed has its origins in Japan. The plant was originally introduced into Britain during the 19th century as an ornamental plant due to its pretty appearance.
Japanese Knotweed grows freely in Japan and Japan doesn’t suffer from the same affects that we do here in Great Britain. This is mainly due to the eco system there, where they have native bugs called the Aphalara Itadori that eat and control the growth of Japanese knotweed. In the UK, the Aphalara Itadori isn’t native and therefore we don’t have any form of natural control to stem or stop the growth of Japanese Knotweed.
Japanese Knotweed possesses a risk due to its highly invasive nature and its incredibly fast rate of growth. It grows through almost all structures including concrete. Once the shoots or stem has penetrated the concrete, its rate of growth then increases whilst it works its way further into the structure eventually forcing it apart often causing severe damage.
JAPANESE KNOTWEED AND THE LAW
Japanese Knotweed is also legally problematic.
Under the Wildlife and Countryside Act 1981 it is an offence to plant or cause Knotweed to spread (so if you have Japanese Knotweed on your land and it spreads to a neighbour etc you can be held liable) and all waste such as any contaminated soil or cutting containing Japanese Knotweed falls under the control of part II of the Environmental protection Act 1990.
Therefore by Law, your waste must be properly disposed of with full compliance of the law because disposing of Japanese Knotweed incorrectly is actually an offense that can lead to prosecution. To find out more about what an infestation means legally, read our guide: Japanese Knotweed UK Law – it’s the most comprehensive guide on the internet.
This means that all waste containing Japanese Knotweed must be taken to a licensed premises where it will be properly disposed of. This is why many people opt to use our cost effective Japanese Knotweed removal service as all of these factors are included within our Japanese knotweed removal cost.
Japanese Knotweed is also considered problematic due to the legislation surrounding it. It is an offense to plant or cause Knotweed to spread in the wild and furthermore all waste (soil/cuttings) containing Japanese knotweed comes under the control of Part II of the Environmental Protection Act 1990 and must be properly disposed off as it is actually classed as controlled waste.
We can help. We keep Japanese knotweed removal costs lower than any other Japanese knotweed removal company. We will eradicate your Japanese Knotweed problem.
MEET OUR TEAM AT KNOTWEED SERVICES. WE’RE ALWAYS HERE TO HELP!
Call us on: 0121 725 6348 or 0800 689 4146 to get an accurate Japanese Knotweed Removal Cost.
HOW WE TACKLE THE PROBLEM
Japanese Knotweed grows fast and spreads easily and quickly. Once growth or an infestation has been discovered, it’s the responsibility of the owner of the land/property to contain it and stop it from spreading.
Damage is caused when it is left untouched and unharmed. It will continue to spread and grow, potentially costing home owners, landlords and land owners thousands of pounds.
When we begin our control and treatment services, we will have conducted an in-depth survey of the area. Within that survey we will list all the treatment options available and their associated removal costs.
To reduce the risk of it returning, we may even suggest a combination of treatment methods. We have a 100% success rate.
Some people have opted to tackle the weed on their own, however given the complicated nature of Knotweed, to completely control and eradicate, the specialist services of a professional are required. t will save you money, time and headache!
Tackling the weed yourself may also hinder you from selling your property. Even if you manage to sell your property and the weed returns when a future occupant has moved in, legally – you could be legally responsible.
REMOVAL COSTS
Japanese Knotweed removal costs will vary, each infestation is unique. The cost of each treatment is different and lots of factors are taken into account, such as:
- Have you been able to identify Japanese Knotweed
- The size of the area
- Estimated time to complete treatment
- Is your infestation close to water or your house
- Has the infestation spread
We have a table at the very top of the page that breaks down the estimated costs you may face. Please call us on: 0121 725 6348 or 0800 689 4146 for a more accurate, on-the-spot estimation.
Unlike other Knotweed companies, we have sophisticated, bespoke software that can give you an estimation within 20 minutes.
As discussed previously, we are confident that our costs are the best value for money anywhere in the UK and our reputation is second to none.
Post-Treatment Monitoring & Care
Year 1-2:
- Site inspections during growing seasons
- Documentation of treated areas
- Spot treatments for any new growth
- Detailed reports after each inspection
Years 3-5:
- Site inspections during growing seasons
- Annual soil testing for rhizome viability
- Final verification of complete eradication
- Certification of treatment completion
Beyond Year 5:
If you purchase an Insurance Backed guarantee, we’ll respond quickly to any reports of regrowth and treat at no additional cost. This gives you total peace of mind.
During the monitoring period you should:
- Not disturb the soil in treated areas
- Report any suspicious plant growth
- Keep photos of treated areas
- Follow our seasonal maintenance guidelines
Frequently Asked Questions
How long does knotweed treatment typically take?
Complete eradication typically requires 2-3 growing seasons. Our herbicide program involves 3-5 treatments spaced throughout this period, while excavation provides immediate removal with a monitoring period afterward.
Will treatment harm other plants in my garden?
Our stem injection method delivers herbicide directly into the knotweed plant, minimizing impact on surrounding vegetation. For standard spraying, we use protective shields and carefully timed applications to protect your garden plants.
Can I sell my property during treatment?
Yes. We provide a transferable treatment contract and an insurance-backed guarantee (is available at an extra one time cost) that satisfies most mortgage lenders. We also provide a knotweed management plan for potential buyers explaining the treatment program.
What happens if knotweed returns after treatment?
Our 10-year guarantee means we’ll return to retreat any regrowth at no additional cost. Our 100% success rate means and the guarantee provides complete peace of mind.
Is your herbicide treatment environmentally safe?
Yes. Our application methods minimise environmental impact, and we follow strict protocols for treatments near water sources or sensitive ecosystems.
SOME OF OUR JAPANESE KNOTWEED REMOVAL CLIENTS
