Japanese knotweed shaves £11.8billion off property values

Japanese knotweed shaves £11.8billion off property values
© Provided by This Is Money MailOnline logo

Japanese knotweed is responsible for shaving £11.8billion off the value of Britain’s property market, new research by a removal specialist claims.

As many as 4 per cent of British homes are affected by the invasive plant – either on the property itself or on a neighbouring property.

The invasive plant makes homes significantly more difficult to sell as buyers can struggle to secure a mortgage on a property where it is found.

However, Britain’s biggest mortgage lenders told us that is possible to get a mortgage for a home affected by knotweed, but conditions may be imposed.

Japanese knotweed shaves £11.8billion off property values
© Provided by This Is Money (

Japanese knotweed on a property reduces its value by an average of 5 per cent, according to the figures from removal specialist Environet.

It used that to estimate that with 890,000 households across the county are being hit by a typical reduction of value of £13,200 due to knotweed, this equated to £11.8billion in total.

The plant can be stopped from spreading – although this process can be costly, at around £2,500 for a 10sq m area for a herbicide treatment or £5,000 for a 10 sq m for an excavation.

Environet claims that removing the root system from the ground is the only way to deal with Japanese knotweed decisively with minimal change of regrowth.

It said that despite the lower costs, herbicide treatment is increasingly recognised as a control method only. 

This is because above-ground growth can disappear, but the root system beneath the ground is often induced into dormancy meaning it’s capable of regrowing in the future – particularly if the ground is disturbed by landscaping or building work. 

Japanese knotweed shaves £11.8billion off property values
© Provided by This Is Money (

Nic Seal, of Environet, said: ‘Those buying and selling property are legally required to declare if the property is or has been affected by Japanese knotweed, but if an infestation has been professionally excavated with an insurance-backed guarantee to satisfy mortgage lenders, it is possible to restore the property value to close to the original value.’

He added: ‘Herbicide treatment of knotweed has always been very popular due to the lower costs, but the message is getting through that it’s only a control method and won’t solve the problem definitively.

‘Buyers are much more wary of buying a property which still has knotweed rhizome beneath the ground as there’s no way of knowing whether it’s completely dead. There’s also an environmental cost to using chemicals, which is of growing concern.’

Environet explained that the excavation element can be carried out during the winter months, allowing for full use of gardens during the summer.

What mortgage lenders say about knotweed 

Mortgage broker SPF Private Clients, explained that those buying a property where Japanese knotweed is found may find it less of a deal breaker than in the past where the lender may have automatically declined a mortgage application.

SPF Private Clients’ Mark Harris, said: ‘Should Japanese knotweed be identified, there are four categorisations assessing its severity, with 1 being best-case scenario and 4 being worst-case. 

‘Depending on which silo the property falls into, and whether there is specialist eradication work either ongoing or planned, and insurance in place, lenders may be willing to consider the application.

‘Depending on the severity of the problem, lenders may tailor the amount they are prepared to lend, or not lend at all.’ 

While securing a mortgage on a property with knotweed can remain challenging, lenders confirmed that they are open to providing finance if a management plan is in place. 

A Nationwide Building Society spokesman said: ‘Our policy on Japanese Knotweed depends on how far the plant is from the property. If it is less than seven metres away from the property, we would request a specialist report about eradicating it before deciding whether we could lend. 

‘If the plant is more than seven metres away, we would need written confirmation from the borrower that they want to proceed with their mortgage application despite the presence of the plant. 

‘What may be required is assessed on a case by case basis. Where the valuer identifies the presence of Japanese Knotweed, they may advise that a specialist report is required with respect to eradicating the plant and, where applicable, to report on repairing the property. Any report for eradication of the plant should include an insurance-backed 5 year warranty against re-infestation.’ 

And spokesperson for Halifax explained: ‘The presence of Japanese Knotweed itself is not a barrier to lending. 

‘We will be guided by the surveyor’s, and any subsequent expert’s, report on the scale, location and effects of any presence on or around the property.’  

How were the figures calculated? 

Official figures from the ONS show there at 27.8million households in Britain.

Environet disregarded 20 per cent of households that are flats as these are less likely to be affected by knotweed. 

That produces a figure of 22,420,000 homes in Britain. 

Environet’s survey conducted with YouGov in 2021 revealed that around 4 per cent of homes are affected by knotweed, either directly – meaning that it grows on the property – or indirectly where a neighbouring property is affected. 

It means 889,600 homes are affected in total, according to Environet.

The average value of a property in Britain is £264,244, according to Land Registry’s figures for August. 

Environet claimed that Japanese knotweed reduces the value of a property by 5 per cent on average. This is based on its own anecdotal evidence of what a property is worth once a knotweed management plan is in place (ie the 5 per cent reflects the amount that a buyer might try to reduce an asking price by due to the stigma and risk of the knotweed returning after treatment or removal). 

The 5 per cent reduction translates into £13,212 being knocked off the average home.

As such, the total amount knocked off property values in Britain as a result of Japanese knotweed is therefore 889,600 households multiplied by £13,212, which is £11,753,395,200.

News Related

OTHER NEWS

Haryana extends Covid-19 restrictions till February 10; theatres, gyms to remain shut

© Provided by Zee News Chandigarh: Haryana government on Wednesday announced the extension of the COVID-19 restrictions in the state till February 10. “The COVID guidelines released through government orders ... Read more »

Afghanistan emerging as a deep security hole. Can Iran's revolutionary generals see it?

© Provided by The Print Iran was a key beneficiary of the post-Taliban order and a junior partner in the Pakistan-led anti-American coalition that eventually succeeded on 15 August 2021. ... Read more »

Aussie children CAN be vaccinated against their parents' wishes - as doctor explains how it's completely legal

A Melbourne paediatrician claims doctors can vaccinate children as young as 12 without their parents’ consent – and stay within the law. An article in the Medical Journal of Australia ... Read more »

Video: Abbie Chatfield breaks her silence as photo surfaces of her dancing at a pub on Australia Day... after she condemned influencers for celebrating on a day of mourning

Read more »

Najib gagal hidupkan semula saman terhadap bank, bekas pegawai kerana cuai

© Provided by Free Malaysia Today Mahkamah Rayuan mendapati tiada merit dalam rayuan dibuat bekas Perdana Menteri Najib Razak. PUTRAJAYA: Mahkamah Rayuan hari ini menolak permohonan Najib Razak menghidupkan semula ... Read more »

Macaulay Culkin and Brenda Song Are Engaged After 4 Years of Dating

Taking the next step! Macaulay Culkin and Brenda Song are engaged after four years together, a source confirms to Us Weekly. © Shutterstock (2) Mandatory Credit: Photo by Broadimage/Shutterstock (9919824ds) ... Read more »

Sue Gray news – live: Legal checks delay Partygate report as Rees-Mogg insists PM will survive scandal

LIVE – Updated at 03:27 MPs and the British public will have to wait at least another day to hear from Boris Johnson about the findings of Sue Gray’s Partygate ... Read more »

Samsung sets revenue records with stronger product sales

© Photo by Vjeran Pavic / The Verge Samsung Electronics broke both its quarterly and annual records for revenue in the fourth quarter of 2021, making 13.87 trillion won (~$11.5 ... Read more »

Shehnaaz Gill birthday special: Sidharth Shukla throwing Sana in the pool after celebrations will remind you of SidNaaz's happy times – watch video

© Provided by BollywoodLife.com It is Shehnaaz Gill’s birthday today. The gorgeous actress and singer has come a long way in the entertainment industry. Her popularity witnessed a major jump ... Read more »

Dulquer Salmaan shares glimpses of his beautiful moments with wife Amal & they set vacay and couple goals

© Provided by Pinkvilla Dulquer Salmaan and his Amal Sufiyaa visited the famous Rathnambore Fort for a family vacation. The actor, who is currently under home isolation due to COVID-19, ... Read more »

Ram Charan and Keerthy Suresh dance on Naatu Naatu at pre-release event of Good Luck Sakhi; video goes VIRAL

© Provided by BollywoodLife.com Keerthy Suresh starrer Good Luck Sakhi is all set to release in theatres on 28th January 2022. Recently, the makers of the film had organised a ... Read more »

Bigg Boss 15 Day 114 Written Update: Shamita has no interest in Karan Kundrra, says I am only Bapat's

In just three days, we will witness the grand finale of Bigg Boss 15. Among the five finalists, one contestant will lift the coveted trophy, and we are all excited ... Read more »

Japan's Mitsubishi, energy body join Gates' nuclear project

TOKYO — Mitsubishi Heavy Industries and the Japan Atomic Energy Agency have signed an agreement to participate in a next-generation nuclear energy project with TerraPower, a company started by Bill ... Read more »

Mum shares her 'miracle' shower cleaning buy that left her foggy shower screen crystal clear: 'It's literally amazing'

Mum discovers $12 cleaning product that leaves her shower looking crystal clearShe uses 'CLR' remover to make her shower screen glass look as good as newThe mum poured equal amounts of hot water and CLR into an empty spray bottleShe soaks the screen, scrubs it, rinses it with water & uses a squeegee to finish  Read more »

Incredible moment brave dad saves neighbour's puppy from being crushed to death by a monster python

A Melbourne father-of-two saved a young family's pet puppy 'Panda' from snake Stewart Brasier had just cracked open a beer when he heard a commotion  He jumped back fence of his Sunshine Coast Airbnb to find pup being crushed The pub owner wrestled the snake off the dog much to relief of Staffy's owners  Read more »

PKR guna logo sendiri bukti PH ‘berpecah', kata penganalisis

© Provided by Free Malaysia Today Penganalisis menolak alasan bahawa bendera Pakatan Harapan (PH) kurang dikenali berbanding PKR. PETALING JAYA: Keputusan Pakatan Harapan (PH) untuk membenarkan PKR menggunakan logo sendiri ... Read more »

7 penyelamat terus usaha cari budak Orang Asli hilang 2 minggu

© Provided by Free Malaysia Today PETALING JAYA: Usaha mencari seorang kanak-kanak perempuan Orang Asli yang hilang hampir dua minggu lepas diteruskan dengan mereka yang dekat dengan usaha menyelamat berkenaan ... Read more »

Kerajaan lancar Pelan Keselamatan Jalan Raya Malaysia

© Provided by Sinar Harian PUTRAJAYA – Kerajaaan melancarkan Pelan Keselamatan Jalan Raya Malaysia (PKJRM) 2022-2030 dengan menetapkan sasaran pengurangan jumlah kematian akibat nahas jalan raya sekurang-kurangnya pada kadar 50 ... Read more »

COVID-19: Changes to periods from coronavirus vaccines 'small' and quickly reverse' says expert

A study in the US found a single dose was not linked to a change to a woman's cycle, while the second jab delay a period by an average of 0.45 days. If a woman got both doses in a single cycle, the delay was 2.32 days. Read more »

Covid-19: Kadar kebolehjangkitan negara meningkat 1.13 pada Rabu

© Provided by Sinar Harian SHAH ALAM – Kadar kebolehjangkitan (Rt) Covid-19 di dalam negara merekodkan lonjakan sehingga mencecah 1.13 pada Rabu selepas menunjukkan persamaan pada Isnin dan Selasa pada ... Read more »

Bersatu Johor kenal pasti pengganti Muhyiddin di DUN Gambir

© Provided by MalaysiaNow Bersatu telah mengenal pasti calon yang berkelayakan untuk bertanding bagi Dewan Undangan Negeri (DUN) Gambir, dalam Pilihan Raya Negeri (PRN) Johor. Ketua Penerangan Bersatu Negeri Johor ... Read more »

#KpopTwitter2021: Filipinos are one of the most passionate and active K-pop fans in the world

With a massive 7.8 billion Tweets globally in 2021, #KpopTwitter once again showed its power by breaking its previous record of 6.7 billion Tweets in 2020. Registering a notable 16% ... Read more »

BBM willing to make his SALN public

FORMER senator and presidential hopeful Ferdinand “Bongbong” Marcos Jr. said on Wednesday he was willing to make his Statement of Assets, Liabilities and Net Worth (SALN) public but warned those ... Read more »

NTC grants ABS-CBN frequencies to AMBS, SMNI, Aliw

— The National Telecommunications Commission has given both the analog and digital broadcast frequencies previously held by ABS-CBN Corp. to Villar-led Advanced Media Broadcasting System, Inc. The NTC also assigned ... Read more »

China to 'perfect' legal rules against unfair competition

© Reuters/Aly Song FILE PHOTO: A man stands at a crossroads in Lujiazui financial district in Pudong, Shanghai BEIJING (Reuters) – China will pick up the pace in “perfecting” legal ... Read more »

Kendrick Johnson: A second local investigation into the death of Georgia teen found in a rolled-up gym mat has closed with no charges filed

A second local investigation into the 2013 death of Kendrick Johnson, the Georgia teenager who was found dead in a rolled-up gym mat, has been closed with no charges filed, ... Read more »

EU urges Mali to reconsider troop withdrawal demand

© Thomas COEX The multinational Task Force Takuba, created to assist Mali in its fight with jihadists, includes troops from across Europe European nations pushed back Wednesday against the Malian ... Read more »

David Walliams wraps arm around Simon Cowell as he leaves BGT

David Walliams was up to his usual tricks when he left the London Palladium on Wednesday with Simon Cowell tucked under one arm and a cardboard cut-out of the music ... Read more »

Heirs of Pablo Picasso venture into crypto, selling more than a thousand digital art pieces of legendary artist's never-before-seen ceramic work

© Boris Heger/AP Marina Picasso, right, granddaughter of artist Pablo Picasso, and her son Florian Picasso pose with a ceramic art-work of Pablo Picasso in Cologny near in Geneva, Switzerland, ... Read more »

Amy Jackson looks the picture of elegance in a black jumpsuit

Amy Jackson proved once again why she was crowned a pageant queen in her younger years as she showed off her winning looks on Wednesday night.    The British showstopper oozed glamour ... Read more »

How The Olympics Will Impact Chicago Fire And More Of TV's Biggest Hits In 2022

© Provided by CinemaBlend chicago fire season 10 stella kidd The Olympics come to NBC every two years (under normal circumstances without the delays that pushed the Tokyo Summer Games ... Read more »

Kelly Brook looks typically chic as she leaves Heart radio studios

© Provided by Daily Mail MailOnline logo Kelly Brook was in high spirits as she exited the Heart Radio studios in London on Tuesday. The presenter, 42, opted for a ... Read more »

Video: Daniel Andrews warns a MAJOR change to the definition of fully vaccinated will be coming to Australia TODAY

Read more »

Seton Hall looks like different team in loss to Marquette

Marquette forward Justin Lewis drives to the basket on Seton Hall guard Myles Cale. Bill Kostroun Seton Hall can point to the lengthy COVID-19 pause that interrupted what had been ... Read more »

'Jeopardy! champion Amy Schneider's history-making run ends

LOS ANGELES (AP) — “Jeopardy!” champion Amy Schneider’s dazzling streak is over, snapped Wednesday by a Chicago librarian after 40 consecutive wins and nearly $1.4 million in prize money. © ... Read more »

Tangani ‘institusi pincang' punca utama rasuah, kata Zaid

© Provided by Free Malaysia Today Zaid Ibrahim berkata, untuk memastikan kerajaan stabil dan kurang korup, institusi mesti bebas daripada rasuah. PETALING JAYA: “Institusi awam yang pincang” mesti diperbaiki untuk ... Read more »

'Shopping centres barely cater to women past a size 14. We're fed up.'

© Getty Images ‘Shopping centres barely cater to women past a size 14. We’re fed up.’ Plus-size women are fed up with having limited options at mainstream shopping centres. How ... Read more »

Mark McGowan reveals a LOOPHOLE in Western Australia's harsh border rules in 'baffling' decision for Aussies trying to return home from overseas

Broadening of exemptions for entering WA will come into effect from February 5All new arrivals still face 14 days in quarantine, even under special circumstanceHowever domestic arrivals will be able to complete quarantine out of a hotelThe rules created a loophole for international travellers to avoid hotel quarantine Read more »

James Harden-less Nets run out of gas late in loss to Nuggets

The Nets went from a Big 3 to a Big 1 to a rag-tag group of the only nine healthy bodies on their roster Wednesday night. The group without a ... Read more »

First US evacuation flight since November leaves Afghanistan

A flight chartered by the US government left Kabul, Afghanistan, on Wednesday, marking the first evacuation departure since November, according to two sources familiar with the matter. © Nicolas Economou/NURPHO/AP/FILE ... Read more »
On free-english-test.com you will find lots of free English exam practice materials to help you improve your English skills: grammar, listening, reading, writing, ielts, toeic