Japanese Knotweed – Difference between a Building Survey & a Knotweed Survey

RICS building surveyors are not expected to be fully trained in the management and treatment of Japanese Knotweed, however many RICS building surveyors do receive training often under CPD so that they have the ability to identify Japanese Knotweed at any time of the year. The RICS building surveyors also have the RICS information paper and the RICS Japanese Knotweed risk table to help them identify the real of risk the knotweed presents to the property. This will take into account the some of the concerns of the lenders and insurance companies. Bear in mind that if a RICS building surveyor fails to identify Japanese Knotweed on or near the property then the buyer may be able to make a claim for negligence against the surveyor. Building Surveys or house surveys as they are normally called gives you an overview of the property’s condition and point out defects and subsidence. One of the major issues with a property’s garden is the presence of Japanese Knotweed. Building surveyors have a duty of care to their clients and any loss incurred by the client due the to the surveyor’s negligence may lead to the client having a claim against the surveyor.

Despite the fact that building surveyors have a duty of care to the client and are expected to identify Japanese Knotweed, not all surveyors are trained to do so. This leads to the risk of not identifying the Knotweed before the purchase of the property and then afterwards potentially having to make legal claims against the surveyor after Japanese Knotweed is found present on the property. When purchasing property it is wise to arrange a Japanese knotweed survey along with a normal building survey so that you can be sure whether Japanese knotweed is present on the property. If Japanese knotweed is present then the buyer can re-negotiate the value of the property or ask the seller to have a Japanese Knotweed Management Plan (KMP) in place or get rid of the knotweed completely.

A Japanese knotweed survey will identify whether Japanese knotweed (or other non-native invasive plant) is present or nearby. The survey findings and site plan accurately record the location and area of knotweed contamination and the level of risk it presents to the property in accordance to the RICS knotweed risk table.  If the property is damaged by Japanese Knotweed then this will also be recorded and photographs are taken. Unlike a normal building survey where Japanese knotweed is noted if identified, a specialist knotweed survey goes into great detail about the extent of the knotweed infestation, the level of risk, the most appropriate treatment option and remedial work and the likely cost of carrying this out.

Where applicable, the knotweed survey will provide information and advice to help with cases of encroachment, misrepresentation regarding the Law Society Property Information TA6 Form (3rd Edition) or professional negligence claims.

 

Alex Evans

You May Also Enjoy

Breaking News

Interest rates matter, but asking price is still what sells a home

Homes priced right first time find a buyer in around five weeks, while overpriced homes take three months longer, and new LRG research shows what buyers are looking for. The Bank of England’s latest decision to hold interest rates is welcome news for buyers and sellers, providing greater stability and confidence for those considering a…
Read More
Tips when buying at property auctions
Breaking News

Three-bedroom homes dominate Britain’s quick-sale market

The latest industry insight from the House Buyer Bureau reveals that the East and West Midlands are Britain’s quick sale hotspots, with three-bedroom homes proving the most common property type when it comes to quick-sale activity. House Buyer Bureau’s internal data* shows that in 2025 the company had contact with, and made a firm offer…
Read More
Breaking News

£3bn tenant deposit shake-up on the cards

Tenant deposit money could be affected by plans to abolish insured deposit schemes   The latest research from The Letting Partnership has revealed that more than £3bn worth of tenant deposits are currently protected via insured tenancy deposit schemes across England and Wales, highlighting the scale of the transition facing the lettings sector should the…
Read More
Breaking News

Brexit housing market winners and losers

England can’t keep pace with the other home nations And the south of England falls well behind the north   The latest research from Yopa has revealed a stark regional divide in house price growth since the Brexit referendum (June 23rd 2016), with Northern Ireland, Wales, Scotland and northern England recording some of the strongest…
Read More
Breaking News

The Rental Market is Rebalancing

But 78% of Tenants Still Can’t Find What They’re Looking For Nine in ten landlords believe the balance of power in the rental market has shifted in favour of tenants over the last two years – yet a quarter of tenants still feel landlords hold the upper hand, according to new research from LRG. The…
Read More
Letting Agent Talk

Dispelling the top five biggest letting agent myths

Sophie Danes, Group Director of Property Management, Lomond   This year has seen the introduction of the seismic Renters’ Rights Act (RRA) as well as other changes affecting the private rented sector (PRS) coming into force, such as the rollout of Making Tax Digital (MTD). As a result, more than ever before, there is a lot of information and speculation surrounding the sector making…
Read More