Japanese Knotweed Removal Cost: What You Need to Know
Worried About the Cost of Removing Japanese Knotweed?
Most people have never heard of Japanese Knotweed—until a conveyancing surveyor tells them it’s in their garden. Suddenly, selling the property feels impossible, and panic sets in. One of the first questions we get is, “How much does Japanese Knotweed removal cost?”
Let’s break it down and bring some clarity to what can feel like a very uncertain situation.
How Do People Find Out They Have Japanese Knotweed?
For around 80% of our clients, Japanese Knotweed is first suspected during a property survey for a sale. It’s understandably alarming. Often, the first response is to search online for images or phrases like “Japanese Knotweed removal cost,” which can quickly lead to confusion or panic.
Before you get overwhelmed, here’s what we want you to know: Japanese Knotweed is a manageable issue—especially when handled by specialists.

What Should You Do If You Suspect Japanese Knotweed?
If you think you’ve spotted Japanese Knotweed (or a surveyor suspects it), the best step is to contact a removal specialist immediately. We’ll arrange a professional site survey to confirm if the plant is present and outline the best course of action.
We offer a bespoke management plan, backed by a 10-year insurance guarantee—a requirement for most mortgage lenders and conveyancing surveyors.
Japanese Knotweed Removal Cost: What to Expect
The cost of removing Japanese Knotweed varies depending on several factors:
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The size and density of the infestation
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Property access
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Number of affected parties (e.g., if it spreads across boundaries)
Here’s what’s consistent:
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Site survey cost: £200
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Includes a visit from two of our experienced surveyors
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A full report delivered within 24 hours
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If Knotweed is found, the £200 is deducted from your treatment cost
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This report can be submitted to your surveyor or mortgage provider, streamlining your property sale process.
Common Misconceptions & Why You Shouldn’t Panic
We frequently speak to homeowners who’ve read alarming claims online or heard exaggerated stories. Many of these are myths. The truth? In most cases, things are far less serious than they seem.
And here’s an important fact: In around 80% of cases, the initial suspicion of Japanese Knotweed turns out to be false. But because the consequences of missing it are serious, surveyors err on the side of caution. That’s why getting a professional opinion is so important.
What You’ll Get from Our Survey Report
Whether or not Knotweed is found, we provide a detailed report including:
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Photographs and plant identification
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Property and neighbouring maps
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Relevant legislation
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A severity rating using the RICS scale
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A treatment plan (if required)
Even if Japanese Knotweed is not present, mortgage lenders often require a formal report to proceed with your mortgage.
Free Advice. Fast Service. Peace of Mind.
Our team offers free advice and honest guidance. If you have a photo, we may be able to tell right away if it’s not Japanese Knotweed—saving you time and money.
So, whether you’ve been told you have Japanese Knotweed or just suspect it, contact Japanese Knotweed Plus. We’ll help you get the facts, ease your concerns, and, if needed, act quickly to resolve the issue.