Glasgow's NPTC-Qualified Bat & Wildlife Survey Specialists
Commercial Bat & Wildlife Surveys for Tree Work Glasgow
✓ Trading since 2005✓ BS3998 standard✓ Fully insured✓ Free quotes
Trading Since 2005
BS3998 Standard
Fully Insured
Free, No-Obligation Quotes
Introduction
Before a mature tree with cavities, cracks or loose bark can be felled, crown reduced or heavily pruned on a commercial site, wildlife law usually calls for a check for bats and other protected species first. A preliminary ecological assessment is that first check: a ground-level inspection of the tree itself, followed by a written report grading how likely it is to be supporting a roost, so you know before contractors are booked whether the job can go ahead as planned or needs a specialist survey first.
Because our own team includes assessors with the NPTC Professional Tree Inspection qualification, the same people who spend their working week assessing tree condition are the ones doing the initial ground-level look for roost features. That tends to give a more accurate first read than a generic checklist visit, and helps rule out further survey work on trees that genuinely don't warrant it, rather than every mature tree on a site being treated the same way by default.
Key Selling Points
- NPTC Professional Tree Inspection qualified assessors carry out the first-look check
- Free, no-obligation initial site visit and consultation
- One point of contact from the roost assessment through to the tree work itself
Where the Survey Fee Stops and Other Costs Start
- Ground-level visual inspection of each relevant tree for cavities, cracks, loose or lifting bark, woodpecker holes, ivy cover and other features that could indicate a bat roost
- A written Preliminary Ground Level Roost Assessment (PGLRA) report grading each tree's roost potential as negligible, low, moderate or high, with supporting photographs of the features found
- A clear recommendation on whether the findings are enough to proceed with tree work as planned, or whether a climbing inspection or emergence survey is needed before anything else happens
- Advice on timing restrictions that may apply before felling, crown reduction or pruning can go ahead - such as the bird nesting season or the bat hibernation period
- An initial consultation and site visit at no cost, giving an honest steer on whether a formal survey is even required before you commit to one
Not Included / Costed Separately
- The tree work itself - felling, crown reduction, pruning or site clearance - is quoted and carried out separately once the survey confirms what can go ahead
- Physical mitigation measures such as bat box installation, only priced once the ecologist's report specifies what's actually needed
- European Protected Species licence application fees payable to the licensing authority are separate from the survey and report fee
- Repeat monitoring visits if a scheduled emergence survey is aborted by poor weather or gives an inconclusive result are booked and charged as additional visits
- Sites outside the standard Glasgow and Central Scotland coverage area may have travel time added to the quote
- Emergency or rapid-turnaround surveys carry a premium above the standard quoted range for the same survey type
From First Call to a Written Roost Assessment Report
- Initial call and site details: You describe the tree(s) involved and why the work is needed - development consent, a dangerous tree, routine felling or crown reduction - and the deadline you're working to. That determines whether a preliminary assessment alone is likely to be enough, or whether the timescale already points toward needing an emergence survey window later in the year.
- Ground-level site visit: An assessor inspects each tree from ground level, using binoculars to check features higher up, looking specifically for cavities, cracks, loose or lifting bark, woodpecker holes and similar signs. Visits are typically arranged within 24-48 hours of booking.
- Written PGLRA report: Each tree is graded for roost potential - negligible, low, moderate or high - with photographs of the features found, delivered as a written report within about a week of the visit.
- Further survey if the grading calls for it: Where a tree scores moderate or high, the report sets out the next step: a climbing survey to inspect features found at height, or a full emergence and re-entry survey where bat presence needs to be confirmed by species before work proceeds.
- Licensing and timing conditions: If a roost is confirmed, the report sets out what's needed before work can go ahead - typically a European Protected Species licence application to NatureScot, plus any timing restrictions or method statement conditions attached to it.
- Handover to the tree work: Once the survey confirms what can proceed and under what conditions, our own crew carries out the felling, crown reduction, pruning or clearance itself, to British Standard BS3998, without you having to find and brief a second contractor partway through.
Pricing From a Ground-Level Check Through to a Full Emergence Survey
A preliminary ground-level assessment on a single site typically runs £300-£500. That rises to £400-£800 per tree if features found up in the crown need a climbing inspection to check safely, and £600-£1,500 per tree across 1-3 visits where a full emergence and re-entry survey is needed to confirm species presence before felling or major work. Sites further out from the standard Glasgow and Central Scotland coverage area may have travel time added, and any repeat visit needed because a scheduled emergence survey was aborted by poor weather or came back inconclusive is booked and charged separately. These figures are a guide - the number and condition of the trees on your site changes the picture, so a firm quote needs a site visit rather than a description over the phone.
Matching the Survey Type to Your Trees and Deadline
| Survey Type | When It's Needed | Typical Price Guide | Timescale |
|---|---|---|---|
| Preliminary Ground Level Roost Assessment (PGLRA) | First check on any mature tree with cavities, cracks, loose bark or similar features | £300-£500 per site | Site visit within 24-48 hours; report within about a week |
| Tree Climbing Survey with PRF Inspection | Features found at height that can't be judged safely or accurately from the ground | £400-£800 per tree | Usually 1-2 days on site |
| Emergence & Re-entry Survey | Roost potential confirmed and species identification needed before felling or major work | £600-£1,500 per tree (1-3 visits) | Only during the active season, May-September; a full programme can run 4-8 weeks |
| Winter static detector assessment | Urgent work needed October-April, when emergence surveys can't run | Quoted against the same PGLRA/climbing scope above | Timed to avoid disturbing hibernating bats |
Where Tree Inspection Knowledge Meets Wildlife Compliance
Glasgow Trees has traded as Glasgow's tree surgery specialists since 2005, and that background in the trees themselves, not just the paperwork around them, shapes how commercial ecological work gets handled here. Our own team includes assessors holding the NPTC Professional Tree Inspection qualification, so the first look at a tree - checking for cavities, cracks, loose bark, woodpecker holes and other features that might indicate a roost - is done by people who spend their working lives up trees, before any specialist ecological survey is booked. That keeps unnecessary call-outs down and gives a more accurate steer on what level of survey a tree actually needs. All the tree work that follows a survey's findings, from felling through to crown reduction and site clearance, is carried out to British Standard BS3998 by a fully insured crew, so there's no gap between the ecological clearance and the physical work being done properly. Restoration work at Pollok Country Park, home to the tallest Sitka spruce in the city at over 33 metres, has put the team among exactly the kind of veteran, cavity-rich trees a preliminary roost assessment is designed to flag - the sort of first-hand read on ageing bark, deadwood and cavity features that's harder to get from classroom training alone. Quotes for the initial assessment stage are free and no-obligation.
Where This Applies Across Greater Glasgow's Commercial Tree Stock
This survey and assessment work covers commercial tree sites across Greater Glasgow, Lanarkshire, Renfrewshire and West Dunbartonshire, extending out along the M8, M74, M77, M80 and A82 corridors into East Dunbartonshire, East Renfrewshire, Inverclyde, selected parts of South Lanarkshire, and as far as Stirling and Falkirk's Bo'ness area. The tree stock that tends to raise a roost query in practice isn't limited to old woodland - it's just as often the mature parkland and roadside trees found on business parks, retail and industrial estates, and housing development sites strung along those same corridors, where cavities, cracks and loose bark build up over decades of limited management and go unnoticed until a felling or crown reduction job is already being planned. Glasgow's tree canopy cover sits at around 15%, above the UK urban average of 10%, so commercial sites across the city are more likely than most to have a mature tree with genuine roost potential somewhere on the boundary line or car park edge - which is usually why an early ground-level check pays for itself on any site with tree work already on the cards.
Frequently Asked Questions
Does your team's tree inspection qualification cover bat and wildlife surveys as well?
No - they're two different disciplines. Our team includes NPTC Professional Tree Inspection qualified assessors, who check a tree's structural condition and flag physical features such as cavities, cracks, loose bark, or woodpecker holes that could indicate a roost. That first-look assessment is useful for deciding whether a specialist ecological survey is actually needed, but it isn't a substitute for one. Where features are found that could support bats, nesting birds, or other protected species, a licensed ecologist still has to carry out the formal survey before any felling, major crown reduction, or work close to the identified feature goes ahead.
Which body actually licenses bat survey work in Scotland?
Bat licensing for work carried out in Scotland sits with NatureScot, not Natural England - Natural England's remit stops at the England border. If you're being quoted for a commercial survey anywhere in the Glasgow, Lanarkshire, Renfrewshire or West Dunbartonshire area, it's worth confirming with whoever is doing the ecological work that their licence and methodology are recognised for Scottish sites specifically, since the legislation, application process, and enforcement all run through NatureScot here rather than the English body.
Do routine jobs like hedge cutting or stump grinding trigger the same survey requirement as felling a mature tree?
Usually not to the same extent. The higher-risk end of the requirement - climbing surveys, emergence monitoring, licence applications - is aimed at significant work on mature or veteran trees with real cavities, cracks, or decay features, not routine maintenance. That said, hedge cutting during the bird nesting season (broadly spring and early summer) still needs a quick check for active nests before cutting starts, since nesting birds are protected regardless of tree size or species. Stump grinding after a tree has already come down doesn't generally raise the same concern, as the roost or nest risk was already dealt with at felling stage.
Once the ecological survey gives the go-ahead, can Glasgow Trees carry out the actual tree work?
Yes. The survey and licensing side is a specialist ecological process, but once it confirms what work can proceed and under what conditions (timing restrictions, method statement requirements, and so on), our own team takes over for the felling, crown reduction, pruning, or site clearance itself, all carried out to BS3998 by a fully insured crew. Keeping the ecological clearance and the physical tree work under one point of contact avoids the gap that often opens up when a client has to find and brief a second contractor partway through a project.
What if the site visit finds nothing - do we still pay the full survey fee?
The initial consultation and site visit is free and no-obligation - that's where an assessor looks at the tree(s) in question and gives you an honest answer on whether a formal survey is even needed. If the features present are genuinely low or negligible risk, you may only need the basic ground-level assessment rather than the more involved (and more expensive) climbing or emergence survey tiers. You pay for the level of survey your specific trees actually warrant, not a blanket fee regardless of findings.
How far ahead of a construction or development deadline should this be booked in?
As early as possible, particularly if there's any chance a full emergence survey will be needed. Those surveys can only run in the active season, May to September, and may need up to three separate visits spaced roughly two weeks apart, so a project that's discovered to need one in October is looking at a wait until the following spring unless an alternative approach, such as timing restrictions or a licensed mitigation route, can be agreed instead. Getting a preliminary assessment done as soon as tree work is being considered avoids that kind of seasonal bottleneck.
Is a professional survey really necessary if we're confident there's nothing there?
Confidence isn't a legal defence. Bats roost in features that are easy to miss from the ground - behind loose bark, deep in a cavity, or in a crack that only opens up at certain times of year - and a roost still counts as protected even when it's temporarily empty. Given the fines involved (up to £5,000 per bat, plus the wider liability and insurance exposure), a modest survey fee is a small outlay against getting it wrong, and a professional assessment is the only reliable way to rule out risk rather than just assume it.
Get a Ground-Level Assessment Booked Before Work Starts
If there's any chance a felling, crown reduction or clearance job on a commercial site will need more than the initial ground-level check, timing matters - emergence surveys only run between May and September, and a tree found to need one outside that window can mean waiting until the following spring. Get the preliminary assessment booked as soon as tree work is on the table, and you'll know well ahead of any deadline exactly what level of survey, if any, your trees actually need.
Know Before You Book the Felling Crew
Get a free ground-level roost assessment from NPTC-qualified assessors before contractors are booked, and avoid a seasonal bottleneck on emergence surveys.
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