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Japanese Knotweed Removal Costs

Japanese knotweed can be a nightmare for the homeowners as monetary implications often extend beyond just paying for its treatment or removal. This troublesome weed can lead to devaluations in property value, as well as the refusal of mortgage and planning applications due to the potential damage that the plant is capable of inflicting to walls and foundations of building.

Japanese Knotweed Solutions Ltd provide customised and site specific services to private and commercial clients for the treatment, control and eradication of Japanese knotweed. The cost of removal varies between sites and is dependent on the methodology undertaken and any specific site requirements.

Combining more than 15 years of experience with cutting edge capabilities:

How much is it expected to cost?

We are considered as an affordable but quality knotweed removal company. Each scenario is different
and you will receive a bespoke quote. An idea on costs and what you could expect is below.

How we estimate:

Involve a Professional

When assessing the cost of treatment or removal, it is recommended to consult with an expert, who can determine the area and severity of the infestation as well as advising on the legislative obligations involved in the treatment or removal of the weed such as the selection of herbicide and regulations concerning disposal. It is important to understand that the cost of allowing Japanese knotweed to grow is far more troubling than the cost of its removal.

The area of infestation should be inspected by a professional who can complete a suitable management plan for the site which includes treatment options and associated costs. This document may be required by the mortgage lender.

The Cost of Treatment

The cost of treatment of the Japanese knotweed includes the services of the specialist as well as the costs for equipment and herbicides and are dependent on the methodology. Chemical treatment is highly effective and often one of the cheapest methods for control, however it could take up to five years for the Japanese knotweed to be completely eliminated.

The Cost of Disposal

If you choose to remove the Japanese knotweed by cutting or digging it out, you’ll need to bear in mind the cost of disposal. Since the plant is classified as controlled waste, it must be transported by a licensed carrier and disposed of at a licensed landfill site. This is to ensure that the plant is not unintentionally spread.

Determinants of Cost

There are various factors that should be considered when calculating the cost of removal, including the size of the area, the method of treatment i.e. spraying or stem injection, whether the waste will be treated onsite or transported and disposed of off-site, and the time required to complete the treatment or removal.


The cost of treating or removing Japanese knotweed is minor when compared to the potential damage the plant could cause to buildings. For more information on the treatment of Japanese knotweed, get in touch with JKSL, the leading specialist in the identification, management and removal of the weed. With over 15 years of industry experience, JKSL have tried and tested methodologies backed with a 10 year Insurance Backed Guarantee for private and commercial clients.