Japanese Knotweed Survey

Japanese Knotweed Survey

Japanese knotweed is a non-native invasive plant species governed by legislation and is a risk to property. A property is considered to be “affected” by knotweed if it is found within the boundaries of the property or close to the boundary on an adjacent property. To help understand and categorise the level of risk that the knotweed presents to the property, the Royal Institution of Chartered Surveyors (RICS) have created a “risk” table (see table below). The level of risk is defined by the proximity of the knotweed to the habitable area or the property boundary and if any structural damage has been caused.

If you are selling or buying a property that is affected by Japanese knotweed it would be prudent to obtain a Japanese knotweed survey to obtain a Japanese knotweed survey and report. A survey will provide a formal Japanese knotweed identification, an accurate record of where the knotweed is located, the extent of the risk zones and remedial feasibility study.

Japanese Knotweed Surveys are FREE*

*The Japanese knotweed survey cost is free, but if we find 'no knotweed' within the property and then additionally we find that the property is 'not affected by knotweed' present in neighbouring properties, we will charge £120 +VAT for the call out.

Example of a Plan of Japanese Knotweed Contaminated Areas from a Knotweed Survey

Knotweed Survey

Knotweed Survey

  • Ideal for home sellers & buyers/mortgage lenders of knotweed affected property
  • The Japanese Knotweed survey report includes the Royal Institution of Chartered Surveyor’s (RICS) property risk category
  • Includes an accurate drawing using an Ordnance Survey map
  • Required for the Insurance Backed Guarantee
  • Japanese Knotweed Ltd are members of the Property Care Association Invasive Weed Control Group (PCAIWCG)

Survey Scope

  • Location of the infestation
  • Extent of the affected area
  • RICS risk category
  • Damage to property
  • Damage to drains and services
  • Damage to patios, paths and driveways
  • Knotweed in adjacent land/property
  • Proximity of knotweed to a watercourse

Other Considerations

  • New extensions and outbuildings
  • Landscaping works
  • Gardening
  • Encroachment onto other properties
  • ASBO

Knotweed Plan Proposal

A professional Japanese knotweed identification, detailed account of our findings, photographs, location plan and confirmation on the knotweed RICS property risk category will all be included in a Knotweed Management Plan (KMP) proposal. This will include a record of any visible signs of damage caused by the knotweed to the buildings, ancillary structures or hard standing/paving.

The KMP will quantify the extent of the problem and may also identify knotweed in neighbouring gardens. It will include the cost of remedial works and guarantees to enable you to establish the true and realistic costs.

This applies for all mainland counties in England, Scotland and Wales.

Royal Institution of Chartered Surveyors (RICS) Japanese Knotweed Risk Categories

The RICS Japanese Knotweed information paper explains the background to Japanese knotweed in the UK, considers how lenders have different policies on dealing with its presence, describes effective treatment and includes an assessment framework. The 4 categories of risk are as follows:

Category Descriptors - Japanese knotweed risk categories (4 being the highest risk)

4

Japanese knotweed is within 7 metres of a habitable space, conservatory and/or garage, either within the boundaries of this property or in a neighbouring property or space;
and/or
Japanese knotweed is causing serious damage to outbuildings, associated structures, drains, paths, boundary walls and fences and so on.

Further investigations by an appropriately qualified and/or experienced person are required (Japanese Knotweed Limited)

3

Although Japanese knotweed is present within the boundaries of the property, it is more than 7 metres from a habitable space, conservatory, and/or garage. If there is damage to outbuildings, associated structures, paths and boundary walls and fences, it is minor. Further investigations by an appropriately qualified and/or experienced person are required (Japanese Knotweed Limited)

Further investigations by an appropriately qualified and/or experienced person are required (Japanese Knotweed Limited)

2

Japanese knotweed was not seen within the boundaries of this property, but it was seen on a neighbouring property or land. Here, it was within 7 metres of the boundary, but more than 7 metres away from habitable spaces, conservatory and/or garage of the subject property.

1

Japanese knotweed was not seen on this property, but it can be seen on a neighbouring property or land where it was more than 7 metres away from the boundary.

 

REQUEST A SURVEY

Send Message