PROTECTED SPECIES SURVEYS Bat Surveys and Mitigation Services
In the British Isles, bats and their roosts are protected by law, which means they need to be carefully considered during the planning of any new development. Bats are commonly found in buildings and trees, so it’s not unusual for them to turn up on potential development sites.
We’re here to help you stay compliant with the law through thorough surveys and practical, well-planned mitigation work. Our team includes licensed bat specialists who can support you at every stage, from initial survey to licensing and implementation.
To avoid delays, it’s a good idea to get started with surveys early in the project—especially if bats could be present.
For Developers
Need a bat survey to keep your development moving? We work with developers of all sizes to deliver quick-turnaround bat surveys, detailed reports, and practical mitigation solutions. Our licensed ecologists make sure your project stays on schedule—and compliant with all biodiversity and planning regulations.
For Planning Consultants & Architects
Looking for a reliable ecology partner? We provide professional bat surveys, reporting, and licensing support tailored to planning requirements. With fast response times and clear communication, we help you streamline your applications and deliver the environmental input your projects need.
BAT SURVEY Bat survey services
Preliminary Bat Roost Assessment (PBRA)
We carry out inspections of buildings and trees to look for any evidence of bat activity or potential roosting features. These surveys can be done at any time of year and often form the first step in understanding a site’s bat potential.
Nocturnal Bat Surveys
If we find signs of bats—or if there's a chance bats could be using the site—nocturnal surveys may be needed. These are carried out at dusk or dawn using ultrasonic bat detectors and night vision equipment, and must be done between April and September, when bats are active.
Mitigation and Licensing
If your project is likely to disturb or remove a bat roost, we’ll design a bespoke mitigation strategy and help you apply for the necessary bat licence. Our goal is to help you meet planning requirements while ensuring bats are properly protected.
DNA Analysis
Sometimes, especially outside the bat survey season, we can use DNA testing of droppings found during initial surveys to help identify the species present. This can be a valuable tool in designing mitigation strategies when nocturnal surveys aren't possible.
BAT SURVEY FAQs
What is a bat survey and why might I need one?
A bat survey checks for the presence of bats or potential roosts on your site. Bats and their roosts are legally protected in the UK, so if you're planning a development, conversion, or demolition, your local planning authority may require a survey to ensure you're complying with wildlife legislation.
How do I know if my site needs a bat survey?
If your site includes old buildings, roof voids, barns, loft spaces, mature trees, or is close to woodland or water, there’s a higher chance bats could be present. Your planning officer or ecologist can advise, but it’s best to check early to avoid delays.
When can bat surveys be carried out?
There are two main types:
Preliminary Roost Assessments (PRAs) can be done year-round.
Emergence/re-entry (activity) surveys must take place between May and September, when bats are active.
What happens during a bat survey?
A licensed ecologist will visit your site to inspect buildings or trees for signs of bat activity or suitable roosting features. If there’s evidence or potential for bats, follow-up dusk/dawn activity surveys may be needed to confirm their presence and how they use the site.
How long does the survey process take?
A basic PRA can be completed in a few hours, with a report typically ready within a few days. If further activity surveys are needed, expect at least 2–3 site visits over a few weeks, depending on planning requirements and species activity.
What happens if bats are found?
Don’t panic—it doesn’t mean your development can’t go ahead. We’ll advise you on a mitigation strategy and help you apply for a bat mitigation licence if needed. This ensures you can proceed legally while protecting the bats and their habitat.
How much does a bat survey cost?
Costs vary depending on the type and complexity of the site. A simple PRA for a small building starts from around £300–£600, while full nocturnal surveys and mitigation licensing are more. We’ll always provide a clear quote upfront.
Can I get planning permission without a bat survey?
If the local planning authority suspects bats may be present and no survey is provided, they can delay or refuse your application. It’s best to get the survey done early to avoid costly hold-ups.
What types of developments typically need a bat survey?
Common examples include:
Loft conversions
Roof or chimney work
Barn conversions
Tree removal or pruning
Demolitions
Extensions near woodland, water, or hedgerows
Renovation of old or unused buildings
Are bats really that common?
Yes—bats are widespread, but many species are rare. Bats are often found in roofs, lofts, eaves, trees, barns, and even modern buildings. You don’t need to see bats to need a survey—just having suitable features on-site can trigger the requirement.
Can I get planning permission without a bat survey?
If the local planning authority suspects bats may be present and no survey is provided, they can delay or refuse your application. It’s best to get the survey done early to avoid costly hold-ups.
What types of developments typically need a bat survey?
Common examples include:
Loft conversions
Roof or chimney work
Barn conversions
Tree removal or pruning
Demolitions
Extensions near woodland, water, or hedgerows
Renovation of old or unused buildings
Need a Bat Survey?
Get in touch for a free quote — we’ll talk you through exactly what’s needed and find a survey date that fits your schedule