Site Surveys & Risk Assessments
PCA-accredited invasive species surveys with RICS-compliant management plans. The essential first step for mortgage applications, development projects and land transactions.
What Is an Invasive Species Site Survey?
An invasive species site survey is a thorough, systematic inspection of your property carried out by a PCA-accredited surveyor. The purpose is to identify any invasive non-native plant species present on the land, assess the extent of infestation, evaluate the risks posed to structures, boundaries and neighbouring properties, and produce a detailed management plan that satisfies RICS guidelines. Whether you are purchasing a property, preparing a development site, or responding to a concern raised by a lender, a professional survey provides the clarity and documentation you need to move forward with confidence.
At Fortis Ecology, our surveyors hold full PCA (Property Care Association) accreditation and follow the RICS Information Paper on Japanese knotweed and other invasive species. Every survey we conduct is backed by professional indemnity insurance, giving you and your stakeholders complete peace of mind. We survey residential gardens, commercial estates, development land, railway corridors, riparian zones and public open spaces across the United Kingdom.
The need for a professional survey often arises during the conveyancing process. Most mortgage lenders now require a specialist invasive species report before approving finance on a property where knotweed or other Schedule 9 species have been identified or suspected. Without a RICS-compliant management plan, transactions can stall or collapse entirely. Our reports are accepted by all major UK lenders and are designed to satisfy their specific requirements, helping you keep your sale or purchase on track.
Beyond property transactions, surveys are equally important for developers, local authorities and landowners who need to understand their legal obligations under the Wildlife and Countryside Act 1981. Allowing invasive species to spread into the wild or onto neighbouring land can result in prosecution, community protection notices and significant financial liability. Early identification through a professional survey is always the most cost-effective approach.
What's Included
- Full site walkover by a PCA-accredited surveyor
- Identification and mapping of all invasive species present
- Risk assessment matrix covering structural, ecological and legal risks
- Detailed photographic evidence and annotated site plans
- RICS-compliant management plan with treatment recommendations
- Written report suitable for mortgage lenders, solicitors and developers
- Follow-up consultation to discuss findings and next steps
Species Covered
- Japanese Knotweed (Fallopia japonica)
- Giant Hogweed (Heracleum mantegazzianum)
- Himalayan Balsam (Impatiens glandulifera)
- Rhododendron (Rhododendron ponticum)
- Other Schedule 9 species including cotoneaster, bamboo and more
Our 4-Step Survey Process
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1. Initial Consultation
We discuss your requirements, the reason for the survey, and any information you already have about the site. This helps us allocate the right surveyor and prepare for the visit.
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2. Site Inspection
Our PCA-accredited surveyor conducts a thorough walkover of the property, identifying and recording all invasive species. We take detailed photographs, GPS-referenced location data and measurements of each infestation area.
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3. Report & Management Plan
We compile our findings into a comprehensive report that includes a risk assessment matrix, photographic evidence, annotated site plans and a RICS-compliant management plan with clear treatment recommendations and costings.
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4. Consultation & Next Steps
We walk you through the report, answer any questions, and advise on the most appropriate treatment strategy. If treatment is required, we can provide a detailed quotation and begin work promptly.
Frequently Asked Questions
How long does a survey take?
A typical residential survey takes between one and two hours on site, depending on the size and complexity of the property. Larger commercial or development sites may require half a day or more. We aim to deliver your completed report within five working days of the site visit.
Do I need a survey for my mortgage?
If Japanese knotweed or another invasive species has been identified or suspected on the property, most UK mortgage lenders will require a specialist survey and a RICS-compliant management plan before they will approve finance. Our reports are accepted by all major lenders including high street banks, building societies and specialist mortgage providers.
What's included in the report?
Your report includes species identification with photographic evidence, a risk assessment matrix, annotated site plans, a RICS-compliant management plan, treatment recommendations with estimated costs, and a clear summary suitable for solicitors, lenders and developers. It is a standalone document that provides everything stakeholders need to make informed decisions.
How quickly can you attend?
We typically schedule survey appointments within five to ten working days, though we can often accommodate urgent requests sooner. For time-sensitive property transactions, please let us know and we will do our best to prioritise your booking. Emergency appointments may be available within 48 hours.