Preliminary Roost Assessment / Scoping Bat Survey
A very smooth process which was undertaken by Louise providing us with exactly what we required. We will certainly be using Arbtech again in future.
Everything You Need to Know About Bat Surveys
On this page, you can find all the information you’re ever likely to need about you bat surveys and what happens next. And if for some reason you don’t, our friendly bat consultants are available to answer your questions. A great place to start learning about bat surveys is the video below by Rob, Managing Director of Arbtech.
Questions like “what happens to my planning application if I have bats?” are asked of our team on a daily basis by people just like you, all across the UK.
We know that bats might not have been in your game plan and the original costings for your project, so we do appreciate you’re a little worried about what comes next. Fortunately, our team have never failed to secure a planning consent for a client where bats have been found or are even suspected to be present at a site.
Of course, there’s a protocol to follow; bat surveys to be done, reports to be submitted to your local planners, and in some rare cases, protected species licences to be obtained… but that’s all in a day’s work for us here at Arbtech. With a huge team of fully licensed bat surveyors all over the country, we have among the broadest and deepest bat expertise of any ecological consultancy in the country.
Background – What is a Roost?
In the UK we have 17 different species of bats that breed here and they are all protected by law. Bats live in places referred to as roosts. When we talk about a roost, we are referring to the “feeding or resting place” of a bat.
A bat roost can be found in a number of different places including; caves, cracks in trees, lofts and barns. Bats like to set up their roosts where there is a safe place to hibernate, raise their babies and find insects and water to feed on. The type of bat–crevice or void dwelling–will generally dictate the type of roosting features e.g. on the exterior or a building that bats will use to roost.
Bats also have different requirements for their roosts at different times of the year, so they will often move around to find a roost that suits them and occupy multiple sites throughout the year. There are day roosts, transitionary roosts, feeding roosts, maternity roosts, and many more besides. Each of these will be spatially different and provide the bats with a place of security from predators, while being relatively stable in terms of their exposure to changes in temperature, humidity, wind, noise and light.
Legislation – How are Bats Protected?
All species of bat native to the UK are legally protected through their inclusion in Schedule II of the Conservation of Habitats and Species Regulations 2017.
Harming animals and or disturbing bats or their roosts is a criminally prosecutable offence. In 2020, a London division of Bellway Homes was fined £600,000 (plus court fees, the prosecution’s costs, and an award to the Bat Conservation Trust) for the destruction of a bat roost without the appropriate licence in place. Surveys and licensing are hardly what you might call “cheap”, but (speculating) a belt and braces approach might have cost a tiny fraction of that overall cost (not to mention the criminal record for the company executive held responsible); maybe 1/100th of the fine, or something like that. There is a considerable volume of additional, well-established case law supporting prosecutions for development disturbing bats, which twice has reached the Supreme Courts!
The take home point is that if you’re planning to impact upon buildings, trees and or other potential roosting sites in the course of your development, however insignificant the impact may seem, you have a legal obligation to avoid disturbing bats as you do so.
Current bat protection laws make it illegal to:
- Intentionally or deliberately kill, injure or capture bats
- Deliberately disturb bats, whether at roost or not
- Damage, destroy or obstruct access to bat roosts
- Possess or transport a bat or any part of a bat, unless acquired legally
- Sell, barter or exchange bats, or any part of a bat
When can a bat survey be done and how does it work?
There are two types of bat survey. Let’s call them ‘Scoping’ and ‘Emergence,’ for the sake of simplicity. A scoping bat survey (stage 1), is an internal and external inspection of your buildings and can be undertaken at any time of the year. The exercise is designed to report to you and exclude the presence of three triggers for emergence surveys, as follows:
- presence of bats i.e. positive/negative
- evidence of their activity e.g. droppings, urine stains, bits of prey, dead bat carcasses
- access to features suitable for roosting; graded on a continuum from negligible through to high
If either presence or evidence is positive, or there is medium to high potential for roosting, you will have to propose mitigation or habitat enhancements for bats in your planning application. Without this mitigation, there would be a net loss of habitat—the cause of bat population decline that drove lawmakers to legally protect bats and their roosts in the first place.
Obviously, it is not possible to propose mitigation for loss of roosting habitat if e.g. the species of bat, the population numbers, and the roost’s significance is unknown. To illustrate this point: it is much easier to mitigate for a single pipistrelle male—common throughout the UK—using your site as an occasional summer roost than say, a large maternity colony of a rarer species of bat.
So it follows that the industry guidance for deciding on what mitigation is appropriate is to conduct bat emergence surveys (phase 2.) In the UK, bats hibernate during the winter months, when the insects they predate upon are less abundant. This means emergence surveys are limited to summer months, typically (though not exclusively) anytime during May through September inclusive.
The bat surveyors use equipment that record and convert bat echolocation calls into sounds we can hear and interpret. Surveys are conducted either at dusk or at dawn when bats can be seen to emerge or re-enter a roost. In this way, our report can show, scientifically, that the mitigation you propose as part of your planning application is adequate and appropriate to the species and population of bat, and the actual use of the site.
Bat Survey Costs
Typically, preliminary roost assessment prices start from £399+VAT, as they represent around a day’s work. Emergence surveys involve several visits to the site, at night, normally by at least two surveyors (so all angles of the building are covered.) This means that bat survey costs for the emergence survey are more expensive, typically costing in excess of £799+VAT as they represent around three or more day’s work.
Looking for a cheap bat survey? We all want the best price possible for services we get and not only are our bat survey prices very low, but we have 13 years of experience doing this. If you use Arbtech, you’ll be guided through the process by the best in the business whilst getting amazing value for money too.
Who Can Do Bat Surveys?
Bat surveys must only be performed by a licenced bat consultant someone who is educated and trained to handle and disturb bats safely and has proven this to the powers that be.
A license is issued to a bat surveyor by Natural England in England and the Countryside Council for Wales in Wales. These two bodies are known as Statutory Nature Conservation Organisations. The license essentially permits actions that would otherwise be unlawful e.g. disturbing bats—which you frequently do when visiting their roosts.
Without a license, a surveyor must retreat if they uncover evidence of bat roosting, which is not much use to you, as the resulting report would be incomplete. Further, without a license the surveyor may be judged to be incompetent and so have their report disregarded by the local planning authority.
Ask to see proof of your consultant’s ecological qualifications, training and most importantly, a science and conservation licence (class 1 or better) for bats, issued by a SNCO. Professional Indemnity insurance of £1m wouldn’t be a bad thing, either.
European Protected Species License (EPSL)
On some occasions, if you have a bat survey done which shows that you have bats and you need to destroy a bat roost as part of your development, you will require a European protected species license from Natural England.
The EPSL process is a separate process that can take up to six weeks. We can help with this process and have an outstanding record of getting EPSL applications approved.
Where a bat roost of low conservation value is present (i.e. small numbers of common bat species) a new type of licence is available (in England only). This is called a Low Impact Class Licence or a Bat Mitigation Class Licence.
This licence can be applied for in a much shorter time frame than a full EPSL, thereby preventing any delays to your development. Arbtech are able to offer licence applications to our clients for this type of licence thanks to our highly experienced consultants.”
The Survey Process
Your planning application, supported by a scoping survey report (and or emergence survey report) will enable you to secure a planning consent. Under certain circumstances, you may require an EPSL for your proposed development, but that will not affect your planning application. So to summarise then:
- Get a scoping bat survey done.
- If you need to, get the bat emergence surveys done.
- Propose appropriate mitigation for bats in your application. (Read more.)
- Get your planning permission!
- Apply for an EPSL if applicable.
You might find this handy chart useful to help you understand the bat survey process:
How are we different?
Unlike other bat survey providers, we only undertake planning and development related work, so our bat experts skills are not diluted over a multitude of disciplines and sectors.
We care the most about what matters to you: getting planning permission via the path of least resistance.
Still have bat survey questions? Our common questions widget on this page will answer the most common questions we get…
Bat Survey Reviews
We have hundreds of genuine 5 star reviews on our website. Here’s just one example of feedback on one of our bat consultants given after a project we worked on recently.