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

Does the market even need a Budget boost?

The latest market analysis from London lettings and estate agent, Benham and Reeves, has suggests that, despite mounting speculation around what support might come for homebuyers in the forthcoming Autumn Budget, the UK property market is already showing impressive stability and resilience – raising the question of whether it even needs a policy boost at…
Read More
Estate Agent Talk

What You Need To Consider Before Diving Into Property Investments

Are you interested in exploring property investments? This is a smart choice because it means that you can explore ways to diversify and grow your finances, even over a limited period. That said, there are lots of factors that you need to consider here to make sure that you are going to be able to…
Read More
Breaking News

Forget kerb appeal: LRG report reveals what really triggers a homebuyer’s offer

One of the UK’s largest property services groups has published its debut sales report, uncovering what genuinely persuades buyers to make an offer – and the findings challenge the traditional focus on kerb appeal. While sellers often guess which improvements will pay off, the data shows where money is well spent and where it’s wasted.…
Read More
Breaking News

Prime London’s love affair with period homes continues

One in four listings are historic properties The latest research from Jefferies London shows that nearly a quarter of homes listed for sale across prime central London (23.3%) offer high-end homebuyers the chance to secure a period property, with demand for prime period properties at its highest in Maida Vale. Jefferies London analysed current for…
Read More
Breaking News

Industry Response to latest Nationwide House Price Index

Nationwide House Price Index for October 2025, with the latest figures showing no Halloween haunting for homebuyers where house price growth is concerned – despite widespread talks of Autumn Budget uncertainty hitting the market. The latest index shows that: – House prices increased by 0.3% between September and October of this year. On an annual…
Read More
Breaking News

The capital’s most haunted property hotspots for Halloween homebuyers

The latest analysis by Foxtons has revealed which of the capital’s spookiest postcodes command the largest house price premiums, as the average cost of purchasing a property in one of London’s most haunted neighbourhoods comes in 48% more than the wider London average. Foxtons analysed the property market across 14 of London’s most haunted locations,…
Read More