Environet has launched a desktop report to help property professionals check for Japanese knotweed risk before a physical survey takes place.
The KnotSure report uses Environet’s heatmap, which holds data on over 100,000 known cases, to rate the likelihood of knotweed at a property as high, medium or low.
The report states how many known cases are within 2.5 miles and gives a regional ranking.
The report also includes a value impact assessment, showing how much a property’s value could drop if knotweed is not managed, and how treatments might change that.
Since the Law Society changed the wording on the TA6 form in 2020, more sellers have answered ‘not known’ to the knotweed question.
The new guidance means sellers must be sure there is no knotweed root underground or within 3 metres of the boundary, not just if there are no visible signs.
As a result, more sellers who aren’t sure have said ‘not known’ to avoid future disputes, which puts the onus on buyers to check for themselves.
Emily Grant, director at Environet, said: “The TA6 form is invaluable for flagging known knotweed infestations, and providing a route to legal recourse where a seller has answered dishonestly.
“But a huge hike in the number of ‘Not known’ responses in recent years has left many buyers in the dark when trying to understand knotweed risks.
“Using the vast amount of data at our disposal, we are now able to offer a low-cost solution to homebuyers, conveyancers, surveyors and estate agents who are unsure whether a property is affected by knotweed.”
Grant added: “A KnotSure™ Report is a fast and affordable way to understand the level of risk and gain expert advice on whether an on-site survey should be commissioned, or indemnity insurance considered.”
Andrew McColl, chairman of the Residential Property Surveyors Association, said: “The introduction of the KnotSure report represents a significant step forward for the property industry.
“As surveyors, we’re on the front line when it comes to assessing property condition, and knotweed is a major concern.
“This report offers a swift and reliable way to flag potential issues early on, benefiting not just surveyors but conveyancers, estate agents, and, most importantly, the public.”
McColl added: “It’s a game-changer in terms of risk assessment and will undoubtedly contribute to a more efficient and robust property transaction process.”
