Japanese knotweed in garden found during building survey.

Japanese Knotweed

Japanese knotweed is classified as a controlled substance under the Environment Act 1990 and may affect the ability to secure lending and subsequently impact the property’s value.

Why is it so bad? Well, Japanese knotweed grows rapidly even in the harshest of environments and has the ability to grow through the concrete causing damage to foundations, floor slabs and paving etc.

As part of our level two and three surveys, we check accessible demised gardens for Japanese knotweed and will report accordingly.

If Japanese knotweed is found during the survey, you can then decide whether to revise your offer or walk away. 

Japanese knotweed remediation is costly as roots often need to be manually excavated from the ground and destroyed by incineration, costing tens of thousands of pounds. 

It is an offence to allow knotweed to spread from your property to another. If this occurs, the property owner who allowed the knotweed to expand onto another property can be held responsible and subject to third party litigation of civil prosecution.

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