0800 028 1943
Resolving Disputes

Japanese Knotweed Claims

Japanese knotweed is a very fast-growing plant that can seriously damage your property and its value. If your property has been affected by Japanese knotweed spreading from someone else’s land, we could help you claim compensation. 

All landowners have a duty to take steps to prevent avoidable damage to neighbouring properties. 

Our solicitors could help you make a claim to:

  • Remove the knotweed in full 
  • Repair any damage to your property
  • Potentially, make up for lost market value.

Some lenders won’t offer a mortgage to buy  a property affected by Japanese knotweed, or will only lend under the condition that it’s removed. This can cost thousands and put potential buyers off. 

Japanese knotweed can grow anywhere, but problems most commonly arise for homeowners whose property  backs onto large areas of commercial land, like railway tracks and construction sites.  If Japanese knotweed has spread to your property from  land nearby, we can help you make a claim against the landowner responsible.

When multiple properties are affected at  the same site, making a group claim can be the most effective way to take action. We have considerable experience of making  group claims,  and can help you and other homeowners get the compensation you need.

We can also help if you weren’t told about Japanese knotweed on your property when you bought it. Whether the seller failed to tell you or the surveyor didn’t identify it, we can help you make a claim against the person responsible.

Call us today on 0800 028 1943 for a free consultation about your Japanese knotweed claim – or contact us online and we’ll call you back.

Extensive experience in group claims
No Win No Fee*
Recommended in leading legal guides
Offices around the country

Call one of our experts free on

0800 028 1943

Or we can call you back at a time of your choice

  • Mon to Fri: 8:00am - 8:00pm
  • Sat to Sun: 9:00am - 5:00pm

Contact us today

For a free initial consultation

Prefer not to call?

Use our form

This data will only be used by Irwin Mitchell for processing your query and for no other purpose.

Japanese Knotweed Claims - More Information
    • What Is Japanese Knotweed?
    • Japanese knotweed (Fallopia Japonica) is a very invasive plant with distinctive red stems and flat leaves. It was first introduced to Britain in the 19th Century as an ornamental garden plant but has since been allowed to grow wild.

      It grows very quickly and can reach heights of four metres. Its roots can stretch three metres deep and extend seven metres in all directions.

      Japanese knotweed is extremely difficult to remove once it’s on your land. If even the smallest piece of root is left in the soil, the weed will re-grow very quickly.

    • Why Is Japanese Knotweed A Problem?
    • Japanese knotweed spreads very quickly and its roots are strong enough to break through concrete. It can cause serious damage to buildings and drainage systems if it’s not kept under control

      It can be a big problem for homeowners because:

      • It’s expensive to remove properly
      • It can damage property if not taken care of
      • It reduces property value and can make a house harder to sell

      Even if it hasn’t caused any physical damage, having it on your land can seriously reduce the value of your property because it’s so difficult and expensive to remove – and leaving it is not an option, because of the future damage it will cause.

      We’ve seen cases where surveyors have even valued a property at zero because of the effects of Japanese knotweed. Although this is an extreme example, it demonstrates the damage the plant can do.

    • What Are The Benefits Of Joining A Group Claim?
    • Because it spreads so quickly, Japanese knotweed often affects many properties at the same time, especially if they are next to a large area of untended land. If this is the case, making a group claim can be the most effective way to ensure a successful result.

      Joining a group claim with other homeowners means you can pool your evidence together to create a stronger case. It can also help keep costs down.

    • What Can Compensation Pay For?
    • Successfully removing knotweed can cost thousands. If your claim is successful the responsible landowner may be ordered to sort out removal themselves or you may be awarded compensation to cover the treatment.

      Compensation can also cover the cost of repairing any damage already done to your property.

      In a recent case against Network Rail, the judge also awarded compensation to reflect how much the property value had been affected by the knotweed problem, even once treatment had been carried out.

      Whatever the circumstances of your case, we’ll fight to get you the best settlement that reflects the full damage done to your property and its future value.

    • Who Can I Claim Against?
    • If Japanese Knotweed has spread onto your property because another landowner hasn’t controlled it on their land, your claim will probably be against them. Depending on the circumstances of your case, this might be a neighbour or a larger organisation like a railway company.

      When you’re buying a property, the seller has an obligation to tell you if there’s a Japanese Knotweed problem. If they didn’t, we could help you make a claim against them. We could also help you make a claim against the surveyor if they failed to identify it in their surveys of the property.

      Whatever the circumstances of your claim, we’ll help you identify those responsible and take action.

    • Meet The Team
    • Our lawyers have extensive experience in group claims and are ranked in the leading legal guides. We have the expertise to help you bring a successful claim with other people similarly affected by knotweed.

      We're a national firm, meaning we can help you wherever you are in the country. 

      Meet the team.

They were pleasant and professional at all times. I recommend them without reservation."

Mrs M, Client
Mrs C

Frequently Asked Questions

How Can I Pay For My Claim?

At the start of your case, we'll discuss funding options with you. If you have legal expenses insurance (LEI) or are covered by a trade union policy, these may be best for you. 

Legal expenses insurance is included in many household or car insurance policies, so it’s always worth checking whether you’re already covered.

If not, we also offer No Win No Fee*.  This means there’s no financial risk to you – you only pay if your claim is successful, and our legal costs will come out of your compensation settlement.

Read More... Read Less...

Where Does Japanese Knotweed Grow?

Japanese knotweed can grow anywhere but it tends to spread through large areas of land that aren’t looked after by the owner.

These sites could include:

  • Railway tracks
  • Rivers
  • Construction sites.

If your house is close to areas like these, it could be at greater risk from the spread of knotweed. 

Read More... Read Less...

Why Choose Irwin Mitchell?

We have years of experience in resolving disputes and have helped many people make successful Japanese knotweed claims.

We’re a national firm so we can help you wherever you are in the country. We have a lot of experience with group claims, meaning we can advise you on the best way to make your case stronger and secure the best result.

Read More... Read Less...

Awards & Accreditations

We're always proud to be recognised for the work we do for our clients and have been named as a leading firm in the latest legal guides - which provide information and recommendations about lawyers and law firms in the UK.


Private Client Team of the Year - Legal Business Awards 2018 Leading Firm - Legal 500 2017 UK Chambers & Partners Leading Firm 2018

What Our Clients Say

We truly value and appreciate the feedback we receive from our clients, as we look to improve the services we offer on an ongoing basis.

Read More Feedback

Our Offices

Our offices are located in major cities throughout the UK and have excellent transport links.

© 2018 Irwin Mitchell LLP is Authorised & Regulated by the Solicitors Regulation Authority. Our Regulatory Information.