8 June 2022 23:05

How can I find a bank willing to provide a mortgage on a house affected by Japanese knotweed? (UK)

Can I get a mortgage if property has Japanese knotweed?

Lenders are cautious with properties that are affected by Japanese knotweed, but it’s not impossible to get a mortgage. Lenders are concerned that a property with knotweed may not be good security for a mortgage, due to the risk of damage posed by the plant and problems it might cause with reselling.

Will Lenders lend with knotweed?

This means that if a property is affected by Japanese knotweed, a lender will require the knotweed to be treated by an accredited knotweed company before lending can be approved.

Should you buy a house that has had Japanese knotweed?

The existence of Japanese Knotweed does not necessarily mean that you shouldn’t buy the property. If there is an approved knotweed management and treatment plan in place, then there should not be any problem in getting a mortgage.

How much does Japanese knotweed devalue property?

between 5 and 100%

Japanese Knotweed can devalue a property between 5 and 100%. There have been cases where homes have been completely devalued as a result of severe infestations, however, these are rare occurrences currently.

What is Category 3 Japanese knotweed?

Risk Category 3*

Moving down the category list now, risk 3* will be given if there is Japanese knotweed present on your property but it is more than 7m away from a habitable enclosure. If there is any structural damage, then it has to be considered minor to be in this category.

How deep are Japanese knotweed roots?

Under the surface of the ground, roots can grow as far as 7 metres horizontally and up to 3 metres deep [2] from each Japanese knotweed shoot.

Does Japanese knotweed affect house insurance?

Having Japanese Knotweed shouldn’t affect your home insurance premium. Most standard house insurance policies will not cover the removal of Japanese Knotweed, or repairs to anything damaged by it. As such, your discovery of the plant, whether or not it has originated on your land, should not affect your premiums.

How much does it cost to remove Japanese knotweed UK?

Japanese Knotweed Removal Pricing

Size of infestation Small (<50m2) Very large (500m2-1,000m2)
Onsite relocation and herbicide (treatment bund / lay down area) £5,000-£10,000 £18,000-£30,000
Burial on site £5,000-£15,000 £30,000-£75,000
Full excavation and disposal (dig and dump) £5,000-£20,000 £100,000-£200,000

Do surveyors look for Japanese knotweed?

Despite Japanese knotweed having made a significant impact on the property industry in the last decade, there are still cases where surveyors miss this invasive plant whilst conducting mortgage evaluations, HomeBuyer Reports and RICS Building Surveys.

Who deals with Japanese knotweed?

Report flytipping of Japanese knotweed by calling the Environment Agency on their 24-hour freephone number (0800 80 70 60). Flytipping any material that contains Japanese knotweed is a criminal offence that can be punishable with up to 2 years imprisonment and an unlimited fine on indictment.

Does a homebuyers survey check for knotweed?

Surveyors have a duty of care to both the homebuyer and the lender to identify Japanese knotweed during a survey, even if the seller has attempted to hide it.

Can you completely eradicate Japanese knotweed?

Despite claims by some companies, Japanese knotweed cannot be killed or eradicated by herbicide application alone. It can be controlled via herbicide treatment or fully removed from a property by excavation. Often, the most cost-effective method of controlling Japanese knotweed is a Herbicide Treatment Programme (HTP).

Can Japanese knotweed come back after treatment?

Can Japanese knotweed come back after it’s been sprayed with herbicide? Yes it can. As any Japanese knotweed expert will tell you, one application of herbicide is rarely enough to kill Japanese knotweed and ensure that it will never grow back.

Can Japanese knotweed grow through concrete?

The simple, and definitive, answer to the question of “can Japanese knotweed grow through concrete?” is no, it cannot. No matter how virulent this weed is, it does not have the force to break through brick or concrete.

How do you stop Japanese knotweed from spreading?

Spraying or injecting the stems with chemicals can be an effective treatment to stop knotweeds spreading. You must only use approved herbicides. You’ll have to respray. It usually takes at least 3 years to treat Japanese knotweed.

What kills Japanese knotweed permanently?

Many have concluded that the only way to kill knotweed is to apply glyphosate (Roundup, Rodeo) between August and the first hard frost — year after year after year — until it stops resprouting.

Do you have to report Japanese knotweed UK?

Japanese knotweed is not a notifiable plant. Unlike some other invasive plants which require immediate action on the part of the landowner, the government does not have to be informed about the infestation, nor to your neighbour’s.

Why should you not cut Japanese knotweed?

People trimming and cutting back hedges should not cut Japanese knotweed, as the plant is spread by fragments which easily take root. That’s the advice from Colette O’Flynn, invasive species officer, National Biodiversity Data Centre, who pointed out the plant is usually spread inadvertently by people.

Can Japanese knotweed spread on shoes?

The Japanese knotweed can only spread through rhizomes in the UK. Shoes can easily cover a tiny piece of the rhizome. The root easily gets stuck on the sole of your shoes; this means that you can easily and unknowingly transport it to another area where it can grow and spread fast.

Can you mow Japanese knotweed?

Cutting the knotweed only removes the aboveground portion and only serves to stimulate the below ground rhizome. In some cases weekly mowing can eventually draw down enough of the plant’s reserves to kill it. The best approach to control is through a combination of cutting and herbicide application.

What happens if you touch Japanese knotweed?

Japanese Knotweed is not poisonous. Unlike the similarly-named non-native Giant hogweed, it does not contain any poisonous elements, making it safe to touch and pick.

Can Japanese knotweed damage foundations?

Japanese Knotweed can cause damage to houses including: infiltrating weak building foundations, structures and substructures. root system growing through paving, tarmac, building foundations and flood defences. Japanese knotweed’s damaging effects on houses can also devalue properties by up to 15%

What animals eat Japanese knotweed?

The roots, actually rhizomes, are sometimes eaten. It is good fodder for grazing animals, including cattle, sheep, goats, horses and donkeys. Old stems have been used to make matches. It is high in oxalic acid so if you avoid spinach or rhubarb you should avoid knotweed.