A much more nuanced and evidence-based risk framework is urgently needed to reflect the latest thinking on the significance of Japanese knotweed, in relation to the size of the infestation, the distance from the property, and the potential risk of any damage. A much more nuanced and evidence-based risk framework is urgently needed to reflect the latest thinking on the significance of Japanese knotweed, in relation to the size of the infestation, the distance from the property, and the potential risk of any damage. Japanese knotweed was first introduced to Britain back in 1825 as an ornamental plant. Some people don’t even realise that Japanese knotweed is sprouting up in the garden or harmfully growing nearby. Japanese Knotweed rhizomes can spread a considerable distance (7 metres or further) from the plant. Japanese Knotweed Law & Legal Advice. With news that RICS is in the process of updating its guidance on how surveyors should deal with Japanese knotweed, the House of Commons Science and Technology Committee (“Committee”) has just published a report on “Japanese knotweed and the built environment” calling on … Because Japanese knotweed is classified as “controlled waste” by the 1990 Environmental Protection Act, many places, like the United Kingdom, require you to dispose of it at a licensed landfill site. These laws have been put into legislation slowly … Japanese knotweed is wrongly destroying the value of thousands of homes because mortgage lenders are relying on discredited scientific evidence, an investigation by MPs has found. Generally, companies will spray the alleyway inclusive of their charge for your property. Loss of Property Value. Japanese knotweed or fallopia japonica is an invasive fast-growing plant that can send its roots deep into the ground and cause damage to building foundations, drainage systems and walls.. It’s an aggressive weed, first introduced into the UK in the mid-19th century, that has a bad reputation. Compare home insurance quotes. However, many people are too mean to pay for knotweed spraying and the whole alleyway needs to be sprayed. The pressure exerted by the expanding rhizomes will result in damage. However, in practice, the presence of Japanese Knotweed is always likely to interfere with a property owners use and enjoyment of the land. It can grow at a rate of … to some house vendors and purchasers. It has since spread throughout the United States and Canada. If the knotweed is a significant distance from the property it should not hinder the sale. However, the plant soon started to take over gardens and proved almost untameable – with an ability to grow up to 20cm every day! The government has introduced a number of Japanese knotweed laws and regulations surrounding the control, growth and transportation of Japanese Knotweed in order to protect homeowners, businesses and the environment alike. Seeds of Change - is Japanese knotweed undergoing a radical image overhaul? Do I have Japanese knotweed and what does it look like? If Japanese knotweed is within seven metres of any property then a treatment plan and guarantee are required. In the distance you see a beautiful leafy plant with delicate flowers. Get a quote. If a property is found to have an infestation of Japanese knotweed on their land or Japanese knotweed within 7 meters, it is extremely difficult to secure a mortgage against the property. The rapid spread of Japanese knotweed across the country and growing awareness of the risks means homeowners are increasingly forced to confront the issue when buying and selling property. How Japanese Knotweed Affects House Insurance: Are You Covered? Japanese knotweed can create problems with those perfectly nice people next door. Most house sale documents now have a section detailing questions related to Japanese Knotweed so you would need to be honest when answering these questions. Japanese knotweed house damage. “The main consideration for sellers (and buyers) is distance. If you have bought a house that's affected by Japanese knotweed, and you are able to show the seller knew about Japanese knotweed on the property, you can sue the seller. Look up the regulations concerning Japanese knotweed in your area. The discovery of Japanese knotweed on a person’s property can come as a blow that completely undermines plans for the future. That’s what happened in the dramatic case of the West Midlands man who, in July last year, killed his own wife, and then himself, on being told (wrongly, as it turned out) that knotweed from the next-door golf course was going to destroy the value of his house. And the threat is real: it can lower house prices, threaten our bridges, and drive men to madness. The distance of the alleyway to your house is not a problem. The 5 categories of severity are as follows: During its peak growing season, it can grow up to 2cm a day and is well known for burrowing into cracks and weaknesses in … As recent reports have indicated, the presence of this destructive non-native weed, can knock thousands of pounds off the value of your property, in some cases, up to 10%. Japanese knotweed is pretty distinct looking. Not only does knotweed cause damage to property, and interfere with a house sale because a lender won’t lend, it can also cause problems with your neighbours. By Paolo Martini on 11th February 2019 (updated: 14th July 2020) in News. If Japanese knotweed grows close to your house, retaining/garden wall, fence or garden building, the underground roots and rhizomes can damage these structures as they exploit the cracks/mortar joints and weaknesses. For example, we have first-hand experience of a particular mortgage lender declining an application when Japanese Knotweed was mentioned in a Homebuyers Report, despite the infestation being on adjacent land in excess of 20 metres away from the boundary and double the distance … It is estimated between 850,000 and 900,000 UK homes are affected by Japanese knotweed, reducing the value of these properties by around 10 … Japanese knotweed was introduced here from Japan in 1850, when it was regarded as a rare beauty thanks to its white flowers. The RICS Japanese knotweed information paper categorises the risk caused by Japanese knotweed into five degrees of severity so that banks and other mortgage lenders can make an accurate and reliable decision on how much finance is offered on properties that have a Japanese knotweed problem. It’s a question we’re often asked, so we’ve teamed up with Expert Surveyors Ltd, the leading dedicated provider of RICS expert property valuation reports in the UK and created JK-VIM, a valuation impact model that gives indicative price reductions. Japanese knotweed is the scourge of both suburbs and countryside, and with very good reason. Whichever way you choose to deal with Japanese Knotweed, it’s important to bear in mind that lenders aren’t lending against property that has Japanese Knotweed (even if it is a few metres away). - Distance between Japanese knotweed and house If you've been reading about Japanese knotweed, you'll know that it has the potential to be a very damaging weed. How much does Japanese knotweed affect House Prices? Japanese knotweed infestations are separated into 4 categories: Knotweed Category 1 if it’s on a neighbouring property, and Category 4 if it’s within 7 meters and/or actually causing damage to the property. The latest Japanese knotweed research. This can be expensive to obtain - and even then buyers may be reluctant to take a property on with Knotweed. The presence of the rhizomes, despite not causing physical damage, was noted by the judge as being a ‘natural hazard’. Japanese knotweed is an aggressive semi-woody perennial plant that is native to eastern Asia. Japanese knotweed crown and rhizome may survive burning so you must dispose of any remaining material following the guidance on how to bury or dispose of it off-site. Japanese Knotweed was brought to the United Kingdom in the 19th century after the plant was discovered in Japan growing on the side of volcanoes. UNLESS you have an expensive treatment plan - and a 10-year guarantee - in place. The increasing demand for information on Japanese Knotweed during the house buying process is emphasising the need for householders to pay more attention to the problem, it is claimed. The banks require ten-year guarantees and … Mortgage lenders now require the sellers of properties affected by knotweed to provide evidence of a professional treatment plan along with an insurance-backed guarantee for remedial work, before they … Left unaddressed, knotweed can effectively wipe out the value of a house. In the 1800’s it was introduced to North America as an ornamental species and also planted for erosion control. Japanese knotweed can halt a house sale, but with a variety of ways to identify and treat it, it doesn't have to stop you buying your perfect home. It will push up through tarmac car parks and drives and paved areas. By Paolo Martini on 11th March 2020 (updated: 18th March 2020) in News. You remember reading about Japanese knotweed and realise this plant looks very similar. More than 20,000 people have now downloaded it, … This minimum distance from Japanese knotweed accounts for both the actual structure of the property and the boundary of the property. Here’s what you need to know. Initially valued for its beauty, opinion changed when it was discovered the extensive and fast-growing roots can have catastrophic consequences on a building’s drains and foundations. Environet estimates that Japanese knotweed now affects 4 – 5% of homes in the UK. The Victorians were wild about Japanese knotweed, with its beautiful heart shaped leaves, delicate creamy-white flowers and hardy attributes which made it ideal for lining pathways and supporting banks. Five years ago, the Environment Agency commissioned a new app to track Japanese knotweed, using the crowd-sourcing principle. Japanese Knotweed has a root spread of up to seven metres meaning that, in one growing period, it can travel up to that distance even if it hasn’t been disturbed. Property Wire reported that a landmark ruling has allowed UK homeowners to sue their neighbours if Japanese knotweed ends up on their land. Published 24 May 2019. 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