# Ecological Survey Planning Requirement

> The Ecological Survey Planning Requirement carries 1 published figure read from 1 source's own page, from 18 to 18 month, read 24 October 2026.

Ecological survey cost · https://ecologicalsurveycost.co.uk/datasets/ecological-survey-planning-requirement/ · computed 2026-10-28

**Range of the published figures:** 18 to 18 month (range 18 to 18 month; 1 published figures; 3 of 0 sources read publish one).

3 of the 0 named sources read in full publish a figure; 0 publish none, read 24 October 2026.

## Every figure, with its source

One row per source: the figure the source's own page publishes, the page, and the day it was read.

| Source | Figure | Read |
|---|---|---|
| [Standing advice for planning consultations - Bats \| NatureScot](https://www.nature.scot/doc/standing-advice-planning-consultations-bats) | 18 month | 2026-10-23 |
| [Natural environment - GOV.UK](https://www.gov.uk/guidance/natural-environment) | 10 % | 2026-10-24 |
| [Natural Resources Wales / Bat licences for development, infrastructure or maintenance work](https://naturalresources.wales/permits-and-permissions/species-licensing/list-of-protected-species/bat-licences-for-development-infrastructure-or-maintenance-work/?lang=en) | 4 week | 2026-10-23 |

## The sentence each figure was read from (3)

- [Standing advice for planning consultations - Bats \| NatureScot](https://www.nature.scot/doc/standing-advice-planning-consultations-bats), read 2026-10-23: "bat surveys have been carried out by a licensed ecologist in accordance with the best practice outlined above, and within the last 18 months;"
- [Natural environment - GOV.UK](https://www.gov.uk/guidance/natural-environment), read 2026-10-24: "With some exceptions the grant of planning permission is subject to the condition that development may not commence until a biodiversity gain plan has been approved demonstrating how the objective of delivering at least a 10% gain in biodiversity value will be achieved for the development."
- [Natural Resources Wales / Bat licences for development, infrastructure or maintenance work](https://naturalresources.wales/permits-and-permissions/species-licensing/list-of-protected-species/bat-licences-for-development-infrastructure-or-maintenance-work/?lang=en), read 2026-10-23: "You must complete the development licence report form four weeks after the licence is due to expire."

## Methodology

Every row is a verbatim sentence read from the named source's own page through our fetch service on the date shown, hash-pinned to the stored read (the sha of the page's visible text; the raw page is mirrored to R2). 3 of the 0 named sources that could be read published a usable figure; 0 published none and are recorded as not published, never filled in; 21 could not be read (blocked, dead or unreachable) and count nowhere. The headline figures (median, minimum, maximum, quartiles) are over ONE figure per source in month (a source's median where its page yielded several accepted sentences), so N counts sources, never sentences; 17 candidate sentence(s) were refused by a reviewer with the reason recorded. The fuller derivation this dataset is chartered to grow into (not yet what the figures above are; they are each source's own published figure as read): one row per rule with its source and date: the protected species and habitats that make a planning authority ask for a survey (Natural England's standing advice, the Conservation of Habitats and Species Regulations 2017, the Wildlife and Countryside Act 1981, the NPPF), the survey season and validity window per species, and the licence that follows; the joined table of rule, season and licence no single authority publishes.

## Sources

- [Cyfoeth Naturiol Cymru / Trwyddedu Rhywogaethau a Warchodir](https://naturalresources.wales/permits-and-permissions/protected-species-licensing/) (the publisher's own terms; quoted for reporting and comment)
- [Natural Resources Wales / Bat licences for development, infrastructure or maintenance work](https://naturalresources.wales/permits-and-permissions/species-licensing/list-of-protected-species/bat-licences-for-development-infrastructure-or-maintenance-work/?lang=en) (the publisher's own terms; quoted for reporting and comment)
- [Plant or animal species protected by law \| Department of Agriculture, Environment and Rura](https://www.daera-ni.gov.uk/articles/plant-or-animal-species-protected-law) (the publisher's own terms; quoted for reporting and comment)
- [NIEA, Natural Environment Division - Guidance on Bat Surveys, Assessment and Mitigation fo](https://www.daera-ni.gov.uk/publications/niea-natural-environment-division-guidance-bat-surveys-assessment-and-mitigation-onshore-wind) (the publisher's own terms; quoted for reporting and comment)
- [Bat licences - GOV.UK](https://www.gov.uk/government/collections/bat-licences) (the publisher's own terms; quoted for reporting and comment)
- [Class licences for wildlife management - GOV.UK](https://www.gov.uk/government/collections/class-licences-for-wildlife-management) (the publisher's own terms; quoted for reporting and comment)
- [Bats: apply for a mitigation licence (A13) - GOV.UK](https://www.gov.uk/government/publications/bats-apply-for-a-mitigation-licence) (the publisher's own terms; quoted for reporting and comment)
- [Licence to survey bats for scientific or educational purposes, Level 2 (CL18) - GOV.UK](https://www.gov.uk/government/publications/bats-survey-or-research-licence-level-2/bats-survey-or-research-licence-level-2-cl18) (the publisher's own terms; quoted for reporting and comment)
- [Bats: protection and licences - GOV.UK](https://www.gov.uk/guidance/bats-protection-surveys-and-licences) (the publisher's own terms; quoted for reporting and comment)
- [Bats: advice for making planning decisions - GOV.UK](https://www.gov.uk/guidance/bats-surveys-and-mitigation-for-development-projects) (the publisher's own terms; quoted for reporting and comment)
- [European protected species policies for mitigation licences - GOV.UK](https://www.gov.uk/guidance/european-protected-species-policies-for-mitigation-licences) (the publisher's own terms; quoted for reporting and comment)
- [Great crested newts: advice for making planning decisions - GOV.UK](https://www.gov.uk/guidance/great-crested-newts-surveys-and-mitigation-for-development-projects) (the publisher's own terms; quoted for reporting and comment)
- [Natural environment - GOV.UK](https://www.gov.uk/guidance/natural-environment) (the publisher's own terms; quoted for reporting and comment)
- [Protected species and development: advice for local planning authorities - GOV.UK](https://www.gov.uk/guidance/protected-species-and-development-advice-for-local-planning-authorities) (the publisher's own terms; quoted for reporting and comment)
- [Protected species and development: advice for local planning authorities - GOV.UK](https://www.gov.uk/guidance/protected-species-how-to-review-planning-applications) (the publisher's own terms; quoted for reporting and comment)
- [Wild birds: advice for making planning decisions - GOV.UK](https://www.gov.uk/guidance/wild-birds-surveys-and-mitigation-for-development-projects) (the publisher's own terms; quoted for reporting and comment)
- [The Conservation of Habitats and Species Regulations 2017](https://www.legislation.gov.uk/uksi/2017/1012/contents/made) (the publisher's own terms; quoted for reporting and comment)
- [Standing advice for planning consultations - Bats \| NatureScot](https://www.nature.scot/doc/standing-advice-planning-consultations-bats) (the publisher's own terms; quoted for reporting and comment)
- [Bats: licences for development \| NatureScot](https://www.nature.scot/professional-advice/protected-areas-and-species/licensing/species-licensing-z-guide/bats/bats-licences-development) (the publisher's own terms; quoted for reporting and comment)
- [Ecology Survey Calendar \| Plan your Survey \| Wharton](https://wnic.co.uk/ecology-survey-calendar/) (the publisher's own terms; quoted for reporting and comment)
- [Bat Surveys for Professional Ecologists: Good Practice Guidelines 4th edition - Guidance f](https://www.bats.org.uk/resources/guidance-for-professionals/bat-surveys-for-professional-ecologists-good-practice-guidelines-4th-edition) (the publisher's own terms; quoted for reporting and comment)

## Cite or embed

- The Ecological Survey Planning Requirement carries 1 published figure read from 1 source's own page, from 18 to 18 month, read 24 October 2026.
- 3 of the 0 named sources read in full publish a figure; 0 publish none, read 24 October 2026.

Cite as: "ecologicalsurveycost.co.uk Ecological Survey Planning Requirement", updated 2026-10-28, https://ecologicalsurveycost.co.uk/datasets/ecological-survey-planning-requirement/.

CSV: https://ecologicalsurveycost.co.uk/datasets/ecological-survey-planning-requirement.csv
JSON: https://ecologicalsurveycost.co.uk/datasets/ecological-survey-planning-requirement.json
Embed (plain HTML, static link back): see https://ecologicalsurveycost.co.uk/datasets/ecological-survey-planning-requirement/#median