It is particularly hard to eradicate, requiring excavation or treatment with herbicide over several years, a process which can cost £5,000. Japanese knotweed can devalue a property by 10% or more. Japanese Knotweed can devalue a property between 5 and 100%. Approximately 850,000 to 900,000 UK households are suffering an average reduction in value of around 10%, knocking almost £20 billion (£19.8 billion) off property values. Tier 4 lockdown: What are rules and which areas are affected? It’s part of the standard conveyancing process. The species can grow through tarmac, disrupt paving and exploit cracks in buildings. Are you sure you want to delete this comment? The spreading of the … Environet estimates that Japanese knotweed now affects 4 – 5% of homes in the UK. If you haven't heard about Japanese Knotweed before, you'll probably be concerned to learn that having this weed on, or nearby, your property can seriously devalue it, cost thousands of pounds to eradicate, stop you from being able to re-mortgage your property and can even get you an ASBO (anti social behaviour order) if you fail to stop it spreading onto neighbouring properties. Unfortunately, when it comes to Japanese Knotweed, you stand a serious risk of having to sell your house at a massively discounted price, or even not being able to sell it at all. The authors acknowledged knotweed can worsen existing cracks in structures, but in general prefers to grow around obstacles rather than burrow through them. Japanese knotweed can devalue a house between 5-15%, however, in some more extreme cases, the plant has been known to almost completely devalue properties. Last year a study by the University of Leeds with engineering firm Aecom argued that Japanese knotweed does not cause significant damage to buildings, even when growing in close proximity. Now it is one of “the UK’s most aggressive, destructive and invasive plants” according to the Environment Agency, due to its ability to spread through tarmac, concrete, driveways and drains. Please be respectful when making a comment and adhere to our Community Guidelines. How much does Japanese Knotweed devalue property? What exactly is the Pfizer vaccine, who will get it, and is it safe? This is much less than the 7 metres commonly cited as the risk zone. This is because knotweed can decrease property property prices by up to 20%. Most recently, a property in Woolston Park in Cheshire claimed a potential £30,000 loss due to the presence of knotweed. The extent to which a property is devalued will depend on the severity of the infestation and the proximity of the Knotweed to … The presence of Japanese knotweed has diminished the value of affected houses by 10 per cent, creating an average loss of £22,800 to property owners. Japanese knotweed is able to ‘spread like wildfire’, so it’s the responsibility of every individual to contain it within their property once its growth has been discovered. It’s not against the law to have Japanese knotweed on your property, but inaction that allows it to spread to any surrounding land is an offence that could incur fines of up to £20,000 if you are a business. If you have Japanese knotweed, it can devalue your property due to the risk it can pose to your house. “Japanese knotweed is the problem that just keeps growing. There have been cases where homes have been completely devalued as a result of severe infestations, however, these are rare occurrences currently. Local authorities across the country are starting to implement regulations to […] Source: Royal Horticultural Society A 2017 survey by the Crop Protection Association suggests that among individuals affected by knotweed, 15 per cent had a … There are many stories in the press, with similar headlines, that state Japanese knotweed is causing house values to be slashed by as much as a half. For most people in the UK, their home is their biggest asset and often the ‘pot of gold’ they are relying on in retirement, but Japanese knotweed is having a serious impact on values by deterring buyers and making homes difficult to sell, even if the knotweed has been successfully treated,” said Nic Seal, founder and manager of Environet. We rely on advertising to help fund our award-winning journalism. On discovering that the numerous, over powering weeds growing between my brick wall (built at the same time as my house in 1930's) and my neighbour's wooden fence are Japanese knotweed that could damage foundation etc and devalue my property, there is also one of them growing in my garden. Japanese knotweed This invasive species spreads very quickly and can cause damage to roads and properties. Watch out for Japanese Knotweed. The report focuses particular criticism on the continued use of the “seven-metre” proximity rule, which was proposed in 2012 by the Royal Institution of Chartered Surveyors (RICS), but has since been ditched because it lacks a solid evidence base. Huzhang (Japanese Knotweed) has been used in traditional Chinese medicine as well as in Japan and Korea for many years. For information specific to the activity of resveratrol, see … Start your Independent Premium subscription today. The most insightful comments on all subjects will be published daily in dedicated articles. This invasive plant is fast-growing and shockingly strong. The presence of Japanese knotweed has diminished the value of affected houses by 10 per cent, creating an average loss of £22,800 to property owners. The report recommends that the Department for Environment, Food and Rural Affairs, commission a study of international approaches to Japanese knotweed in the context of property sales. , according to new research, with many mortgage lenders refusing loans for properties affected by the weed. There have been cases where homes have been completely devalued as a result of severe infestations, however, these are rare occurrences currently. 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Sellers are now required to inform future buyers whether the property is or has been affected by Japanese knotweed even if it the plant has been removed. Japanese knotweed could decrease the value of a property from anywhere between 5 and 15 percent. The invasive plant Japanese knotweed. 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Darkened rooms. Want an ad-free experience?Subscribe to Independent Premium. There have been cases where homes have been almost completely devalued as a result of severe infestations, however, these are rare occurrences. The research also revealed a poor understanding of the legal and financial risks around knotweed. A case in Hertfordshire hit the headlines a few years ago when the value of a couple’s home dropped by more than £250,000 because of a Japanese knotweed invasion. The sale collapsed and the value of the property fell to £80,000. How much can you expect subsidence to devalue your property. It allows our most engaged readers to debate the big issues, share their own experiences, discuss real-world solutions, and more. Furthermore, mortgage lenders will usually refuse to give out loans unless property owners have a knotweed management plan with an insurance-backed guarantee in place, which can usually be passed on to a buyer and their mortgage lender. Japanese knotweed has knocked £20bn off the total value of the UK property market, according to new research, with many mortgage lenders refusing loans for properties affected by the weed. Report Sightings – join the fight against Japanese knotweed. Unfortunately there is no real way of answering this question, a lot of people ask it, but it depends on numerous factors which include the extent of the damage and even the area that you live in, believe it or not. It is estimated that more than two per cent of development sites and 1.25 per cent of residential properties in Britain are affected by the plant, amounting to tens of thousands of sites in total. You can find our Community Guidelines in full here. It can push through concrete, meaning it can cause structural damage to your property that can devalue your property by 100 per cent. The nightmare weed can devalue a property between five and 15 percent, according to Knotweed Help. Local people are being warned that the presence of Japanese Knotweed can seriously devalue a property. Norman Lamb MP, Chair of the Science and Technology Committee, said: It is clear that the UK’s current approach to Japanese knotweed is more cautious than it needs to be, especially when comparing it to that of other countries. Formally known as Fallopia japonica, Japanese knotweed is a fast-growing invasive plant with bamboo-like stems. Mr Seal said that anyone affected by knotweed should try to resolve the problem as quickly as possible, with professional help. It can even grow through concrete which can create cracks in brickwork, patios and … Covid-19 vaccine: Latest updates on Oxford, Moderna and Pfizer breakthroughs - and who will get it first? The research examined 68 homes where knotweed was found, as well as 81 additional sites. Please continue to respect all commenters and create constructive debates. You could also be at risk of prosecution if is spreads to any neighbouring properties. The oriental plants were first introduced to the UK in the nineteenth century. While acknowledging that Japanese knotweed can cause damage, the report noted recent evidence suggesting the effects on buildings “might not be as significant as previously believed.''. “House value halved due to presence of Japanese knotweed”. This can be expensive to obtain - and even then buyers may be reluctant to take a property on with Knotweed. Call in a specialist to remove it as … He warned: “DIY attempts at treatment will usually only make things worse and can even hasten the spread of the plant.”. France 'could have helped UK tackle new Covid strain if not for Brexit', New Covid variant has already spread across the UK, Sir Patrick Vallance warns. How much does Japanese Knotweed devalue property? Invasive Japanese Knotweed can damage the foundations of your home creating a risk of subsidence. 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Japanese Knotweed is an invasive plant and if someone else’s negligence has left your property infested, you may be able to claim £10,000 or more in compensation, often on a no win no fee basis. Japanese knotweed also appeared in several high profile legal cases this year, as landowners were successfully sued for allowing the plant to spread into neighbouring properties. Japanese Knotweed Claims Home > Services > Housing & Property > Japanese Knotweed Claims. Japanese knotweed can devalue a property between 5-15%. According to Knotweed Help, Japanese knotweed can devalue a property between 5-15% or in some severe, but rare, cases properties have been almost completely devalued. A 2017 survey by the Crop Protection Association suggests that among individuals affected by knotweed, 15 per cent had a property deal fall through, 20 per cent saw a drop in the value of their house, while 10 per cent had to compensate someone because of the plant. 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