Single wall or elevation
£525–£1,575
Choose Standard or Plus
Both packages provide the same core ecological assessment, including a Preliminary Roost Assessment, UKHab survey and protected-species assessment. Plus is designed for clients who need a faster turnaround or expect their plans to evolve.
| What’s included | Standard: £1,350 + VAT | Plus: £1,750 + VAT |
|---|---|---|
| Preliminary Roost Assessment (bat survey) | ||
| UKHab survey of all land within the survey scope | ||
| Assessment for protected species | ||
| Ecological data search | ||
| Professional planning report | ||
| Recommendations and mitigation measures | ||
| Responses to planning queries relating to our report | ||
| Typical turnaround | 5–15 working days | 1–5 working days |
| Report edits or design changes included | 1 amendment | Up to 3 amendments |
| Best for | Clients who want a comprehensive professional planning report and are not in a hurry | Clients with tighter deadlines or plans that may change |
Standard
A complete professional ecology and bat planning service for straightforward building-and-land projects where the programme is not particularly urgent.
Plus
The same professional assessment with priority turnaround and more flexibility if your design develops after the survey.
Is Building + Land the right option for your project?
Choose Building + Land where the proposals affect an existing building and also extend into, remove or materially affect surrounding land, habitats or vegetation.
Building + Land is typically suitable for:
- Larger extensions extending into gardens or other vegetated land
- Replacement dwellings and redevelopment schemes
- Demolition or building works combined with landscaping or vegetation clearance
- Projects affecting trees, hedgerows, grassland, scrub or other habitats
- Schemes where both building-related bat risks and wider ecological constraints need to be assessed
Only affecting the building?
If the works are largely contained within the existing developed footprint and do not materially affect surrounding habitats or vegetation, our Building Only service may be the more appropriate option.
Simple rule:
Building + Land is for projects where works affect both an existing building and surrounding habitat or vegetation.
What happens if your plans change?
Planning projects evolve. The Standard service includes one reasonable report amendment or design change, while the Plus service includes up to three amendments or design changes, provided the revised scheme remains within the original survey scope.
Once your included amendments have been used, further amendments cost £100 + VAT each
We will always confirm the charge before carrying out any additional revisions.
A new quotation may be required where changes substantially alter the development, add land or buildings, require another site visit, introduce new ecological impacts, or mean that additional surveys or assessments are needed. Fundamental changes of scope remain separately chargeable.
What happens if further surveys are needed?
The initial assessment identifies whether further seasonal surveys are needed for bats or other protected species. Not every site needs additional surveys. If they are required, we will explain why, when they need to be undertaken and provide a clear quotation before you proceed.
Bat emergence surveys start from £525 + VAT.
Detailed bat emergence survey pricing
How much does a bat emergence survey cost?
Bat emergence survey costs depend mainly on the number of surveyors needed to observe all relevant elevations, rooflines and potential bat access points, and on the number of survey visits required. The ranges below show the typical total survey cost where one to three visits are needed.
Small square or rectangular building
£1,050–£3,150
Large square or rectangular building
Longest wall over 20m
£2,100–£6,300
L-shaped building
£1,575–£4,725
Two separate buildings
£2,100–£6,300
The ranges below cover one to three survey visits
The final number of visits is determined by the Preliminary Roost Assessment, survey findings, proposed works and any site-specific constraints. We will confirm the required survey programme before you proceed.
How many visits will be needed?
The Preliminary Roost Assessment classifies a structure as having negligible, low, moderate or high suitability for roosting bats. This informs the usual level of bat emergence survey effort.
| Bat-roost suitability | Typical emergence survey requirement |
|---|---|
| Negligible | No emergence survey normally required |
| Low | Usually one survey visit |
| Moderate | Usually two survey visits |
| High | Usually three survey visits |
| Evidence of bats found during the PRA | Usually two survey visits |
Further seasonal ecology surveys
What if other protected-species surveys are needed?
Where the initial ecological appraisal identifies suitable habitat or another potential constraint, further species-specific surveys may be recommended. These are not included in the Standard or Plus package price. The figures below are provisional guide prices for small, straightforward sites and can be edited as the pricing structure is finalised.
Further surveys are only recommended where justified by the initial assessment
Survey effort, seasonality and cost vary with the site, species risk and development proposals. We will provide a site-specific quotation before any additional work is commissioned.
Separate service
What about Biodiversity Net Gain?
Biodiversity Net Gain (BNG) is a separate assessment and is not included within the Standard or Plus Building + Land package.
Small-site BNG assessment
£950 + VAT
Large-site BNG assessment
£1,600 + VAT
When is mandatory BNG likely to apply?
For planning applications in England made on or after 6 August 2026, developments on sites of 0.2 hectares (2,000 m²) or less are generally exempt from mandatory BNG, provided they do not impact onsite priority habitat. Other exemptions may also apply. If priority habitat is impacted, the 0.2-hectare exemption does not apply.
Small-site versus large-site pricing: We will add the final Crossman Ecology definition here once the pricing thresholds and scope have been confirmed. More complex schemes, significant habitat impacts, off-site solutions, detailed habitat design or long-term management requirements may require additional work and a bespoke quotation.
Need ecology and bat surveys for your project?
Send us the site address and proposed plans and we will confirm the most appropriate service, whether BNG is likely to apply, and any likely follow-on survey requirements.