Japanese knotweed can have a detrimental impact on the value of your home, as well as produce conflict amongst neighbours and stress in your daily life.

In this blog, we answer many of the common questions surrounding Japanese knotweed and home insurance with a clear emphasis on the legal aspects.

Finding a knotweed infestation can also result in some very costly expenses, which many people may wish to avoid by relying on their homeowner’s insurance. Unfortunately, filing a claim on your homeowner’s insurance after discovering Japanese knotweed is not always easy, or even possible.

Does house insurance cover Japanese knotweed?

Most homeowners’ insurance policies do not cover losses caused by Japanese knotweed. There are several exceptions to this rule, such as if the plant has caused subsidence or spread from a nearby property.

Having Japanese knotweed on your property may also raise additional concerns, such as how it may influence your insurance premiums and whether your insurance would pay the legal costs associated with a Japanese knotweed civil lawsuit against you.

Will my insurance provider pay for the treatment of Japanese knotweed?

Japanese knotweed treatment is not covered by almost all homeowners’ insurance.

If you find Japanese knotweed on your property and can prove that it came from a neighbouring property, or if the seller lied about the Japanese knotweed, you may be able to seek compensation to cover the cost of damages.

Japanese knotweed damage buildings above and below the ground
Japanese knotweed damage buildings above and below the ground

Am I covered for damage caused by Japanese knotweed?

The costs of restoring the damages caused by Japanese knotweed growing on your property are often not covered by standard home insurance plans. If the Japanese knotweed has caused structural damage to your home, such as subsidence, you may be eligible to seek compensation.

However, successful claims are only likely to be made if you can demonstrate that you took reasonable steps to eradicate the Japanese knotweed prior to the subsidence.

This is an excellent example of why it’s critical not to put off dealing with a Japanese knotweed infestation; doing so can lead to serious consequences like the ones described above, as well as the legal ramifications of allowing the plant to spread to a neighbouring property and breaking Japanese knotweed law.

Will my insurance cover Japanese knotweed from a neighbouring property?

Depending on your policy, the cost of restoring damage caused by Japanese knotweed invading a neighbouring property may be covered. In this case, your insurers may seek reimbursement from your neighbours for the price of the property damage.

Japanese knotweed is an invasive species that has been spotted in your neighbourhood. It’s important to know if your insurance will cover you for this potential hazard.

Japanese Knotweed Home Insurance coverage is vital if it spreads to a neighbour's property too
Japanese Knotweed Home Insurance coverage is vital if it spreads to a neighbour’s property too

Will my insurance cover legal expenses if my neighbour claims for Japanese knotweed damages?

Allowing Japanese knotweed to spread from your property into a neighbouring property, whether publicly or privately owned, is illegal. If your neighbour can prove that you permitted the plant to spread onto their property, you might be held liable for the property’s loss of value as well as any treatment expenditures spent as a result of the infestation.

In the event that your neighbour sues you for damages caused by Japanese knotweed invading their property, your insurance coverage may cover the cost of legal fees.

Legal expense insurance is usually available as an add-on to your basic house insurance policy. If you’re concerned that you won’t be protected in this situation, look over the fine language in your current policy.

Do I need to inform my insurance provider that I have Japanese knotweed?

You do not need to notify your insurance company about the presence of Japanese knotweed on your property. If you detect Japanese knotweed on your property, you should do everything you can to prevent it from spreading and causing harm to your home.

If you don’t do this, your insurance company may deny a future claim for subsidence damage on the basis that you were irresponsible in not correcting the problem sooner.

If your insurance company inquires about the existence of Japanese knotweed on your property, you must be honest and let them know.

Best way to kill Japanese knotweed permanently so you prevent damage to your property
Best way to kill Japanese knotweed permanently so you prevent damage to your property

Can I get house insurance if I have Japanese knotweed?

If you have Japanese knotweed on your property, you can still get home insurance. However, most homeowner’s insurance plans do not cover the price of removing Japanese knotweed or the property damage caused by the plant, insurers are unlikely to consider this.

However, if you are specifically asked if you have Japanese knotweed, it is best to respond honestly and openly.

Does having Japanese knotweed affect my house insurance premiums?

Your house insurance rate should not be affected if you have Japanese knotweed. The removal of Japanese knotweed or repairs to anything harmed by it is typically not covered by normal homeowners’ insurance policies. As a result, whether the plant was discovered on your property or not should have no bearing on your insurance premiums.

However, if you intend to file a claim for losses due to Japanese knotweed-caused subsidence, your premium would almost certainly rise. Remember that if you make a valid claim, you will also be responsible for paying the excess specified in your policy.

Claiming for subsidence insurance can also make it more difficult to secure future subsidence insurance because your home will be designated as high-risk by the insurance company.

What insurance do I need to cover against Japanese knotweed?

Since 2015, you can get Japanese knotweed insurance that covers the expense of eradicating the plant as well as the potential costs of claims made against you as a result of the knotweed spreading to a neighbouring property.

An indemnity insurance coverage for Japanese knotweed will cover the costs of treating and eradicating the infestation, as well as preventative insurance-backed actions to keep the plant from recurring.

The coverage should also cover the cost of a Japanese knotweed study, as well as any property damage repair costs and legal fees incurred as a result of claims brought against you. These policies were established to make the conveyancing procedure easier in circumstances when properties were impacted by the plant.

Japanese knotweed insurance policies typically over the last ten years, with an indemnity level based on the market value of your home, providing essential protection to both you and your mortgage lender.

It should be emphasised that these Japanese knotweed indemnification plans are only available for residential properties when the presence of the plant is unknown or if the mortgage lender is satisfied that treatment has been completed. Getting a mortgage with Japanese knotweed is a different situation, and it’s something to think about before buying a home with a history of infestations.

In conclusion

Unfortunately, Japanese knotweed indemnification insurance like the one described above has not been widely marketed, so for many people, learning about them will be too late.

If you’ve discovered Japanese knotweed on your property and discovered that your insurance doesn’t cover the costs of repair or removal, you may be able to seek reimbursement from the property’s seller or even the individuals or organisations who enabled the plant to spread to your property.

Want to know more about Japanese knotweed and home insurance?

Knotweed Removal aims to provide the most up-to-date information, help and advice for YOU to make informed decisions. If you are unsure or uncertain about how to proceed, please reach out to us and we will gladly come back and advise you as best we can.

Governmental advice can be found here and the UK law covering the removal of Japanese Knotweed as stated under the Wildlife and Countryside Act 1981 can be found here.

The best means to contact us is via our email – hello@knotweedremoval.tips

Do not forget we have a library of blogs covering many areas relevant to Japanese Knotweed, our free downloadable How-to Guides and Product Reviews on the latest methods being employed to eradicate or remove Japanese Knotweed.

Knotweed Removal, UK

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