When two designations overlap, which test governs
On a site with several designations the order you take the tests in changes the planning balance. Statutory gateways first, statutory duties next, policy tests after, section 38(6) last.
When a site carries more than one designation, no test trumps the others. There is no statutory hierarchy of designations in English planning law, so every applicable test has to be applied on its own terms, and the order in which you take them changes what the planning balance looks like. Statutory gateways come first, statutory duties next, policy gateways after that, and the section 38(6) balance last.
Getting the sequence wrong is the commonest structural fault in planning statements for constrained sites. The harm gets weighed before the gateways have been passed, which produces a conclusion the decision-maker cannot adopt.
Where overlaps actually occur
Overlaps are the norm rather than the exception on rural and urban-edge sites.
A village-edge site in the Green Belt with a conservation area boundary along one side and a recreational pressure catchment for a European site over the whole of it. A riverside brownfield plot in Flood Zone 3a inside an Air Quality Management Area with a Grade II listed mill on it. A farmstead in a National Landscape with a scheduled monument in the adjoining field and best and most versatile land under the access road.
Each of those carries between three and five separate tests, some statutory, some policy, and some requiring a separate consent regime altogether.
Statutory duties and policy tests do different work
The distinction matters more than the labels.
A statutory gateway either opens or it does not. Under the Conservation of Habitats and Species Regulations 2017, if a likely significant effect on a European site cannot be screened out, an appropriate assessment follows, and if adverse effect on site integrity cannot be ruled out, permission can only be granted through the derogation route of no alternative solutions, imperative reasons of overriding public interest and compensatory measures. No amount of planning benefit substitutes for that. Where a habitats site is engaged, the presumption in favour of sustainable development is disapplied.
A statutory duty conditions how judgement is exercised. Section 66(1) of the Planning (Listed Buildings and Conservation Areas) Act 1990 requires special regard to the desirability of preserving a listed building and its setting, and section 72(1) requires special attention to the character and appearance of a conservation area. The courts have held those duties mean considerable importance and weight attaches to heritage harm, so the balance is not a neutral scale. Section 85 of the Countryside and Rights of Way Act 2000, as strengthened by the Levelling-up and Regeneration Act 2023, requires decision-makers to seek to further the purposes of a National Landscape. The biodiversity duty in section 40 of the Natural Environment and Rural Communities Act 2006, as amended by the Environment Act 2021, works the same way.
A policy test is applied through the development plan and the National Planning Policy Framework, current edition published 17 August 2026. Green Belt inappropriateness and very special circumstances, the flood risk sequential and exception tests, and the heritage harm tests all sit here. They carry great weight but they are weighed, not gated.
Scheduled monument consent under the Ancient Monuments and Archaeological Areas Act 1979 is neither: it is a separate consent from a different decision-maker, and planning permission does not authorise the works.
Sequencing the tests
Take them in this order in the statement, and say why you have.
- Separate consent regimes. Identify anything needing listed building consent, scheduled monument consent, a protected species licence or an environmental permit, and state where each sits in the programme.
- Habitats Regulations screening and, where needed, appropriate assessment. This comes first among the assessments because a failure here ends the matter.
- Environmental Impact Assessment screening, which several designations can trigger through Schedule 3 sensitivity even below the Schedule 2 thresholds.
- Statutory duties, each addressed by name with the weight the courts require.
- Policy gateways that operate sequentially in substance: the flood risk sequential test before the exception test, and Green Belt inappropriateness before very special circumstances.
- The remaining policy tests and the development plan as a whole.
- The balance under section 38(6) of the Planning and Compulsory Purchase Act 2004.
The sequential test deserves its own note. It asks whether there are reasonably available sites at lower flood risk, and it is not a balancing exercise. A statement that weighs regeneration benefits against flood risk before addressing sequentiality has skipped a step an inspector will find.
Where one test is more restrictive in substance
Labels mislead. Green Belt sounds like the heaviest constraint on most sites and often is not.
Compare two scenarios on the same field. Green Belt requires you to show very special circumstances, which is demanding but is a balance you can win with sufficient benefits. Recreational pressure on a European site, by contrast, requires either mitigation that demonstrably works or the derogation route, and no quantity of housing need will substitute. Understanding how recreational pressure and greenspace provision interact often matters more to deliverability than the Green Belt argument that dominates the covering letter.
The same inversion happens with heritage. A non-designated asset attracts a balanced judgement, while a scheduled monument brings a separate consent with a presumption in favour of physical preservation. And what the listing actually captures, including curtilage structures, sometimes turns a setting argument into a direct harm argument.
Rank the tests by how hard they are to satisfy on this site, then put the hardest first in the document. That is the reverse of the usual instinct, which is to lead with the constraint the client worries about.
Cumulative harm across designations
Two errors recur.
The first is treating harm to overlapping designations as one harm because the geography is the same. Harm to Green Belt openness and harm to the setting of a listed building are different harms with different tests, even where the same building causes both. Identify each separately, state its degree, and keep them separate through to the conclusion. Evidence on Green Belt openness does not answer a heritage setting question.
The second is the reverse: aggregating harms into a single vague statement of unacceptability. Where you are the applicant, force the analysis to be granular, because a council that cannot articulate which harm falls under which test is vulnerable on appeal.
Cumulative effect is still a real concept. Where three designations each suffer limited harm, the combined effect can be more than the sum, particularly for landscape and townscape character. Say so if it is true. A statement that finds no harm anywhere is not believed.
Weighing benefits once
Benefits get counted once, and this is where the drafting discipline shows. Affordable housing delivery cannot be the very special circumstance for Green Belt purposes, the public benefit outweighing heritage harm, and the imperative reason of overriding public interest, all at full weight, in the same document.
It can appear in more than one test, because the tests ask different questions. What it cannot do is multiply. Set out the benefits once, with the weight attributed to each, then cross-refer when applying each test rather than restating them with progressively warmer adjectives.
Where the derogation route is engaged, the imperative reasons test is materially harder than very special circumstances, and a benefits case pitched at the Green Belt standard will not carry it.
Drafting a conclusion an officer can adopt
The test of a good statement on a multiply designated site is whether the case officer can lift the conclusion into the committee report with light editing.
That means a numbered conclusion, one paragraph per test, each stating the test, the finding and the weight. Then the balance, referenced to section 38(6), with the plan conflict or compliance stated explicitly. Then a short paragraph on the conditions or obligations that make the finding deliverable.
Put the analysis in the Planning Statement and keep the specialist evidence in the specialist documents, with the Heritage Statement carrying the significance assessment rather than repeating it in the planning case. Cross-refer by paragraph number. A committee report writer who has to hunt for the significance assessment will summarise it badly.
This is general guidance rather than legal advice. Check the position with your local planning authority or a qualified professional before relying on it. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.
Frequently asked questions
Is there a hierarchy of planning designations?
No. English planning law sets no hierarchy, so each applicable test is applied on its own terms. What varies is the nature of the test: a Habitats Regulations gateway either opens or it does not, a statutory duty conditions how judgement is exercised, and a policy test such as very special circumstances is weighed in the balance.
Which test should be addressed first in a planning statement?
Separate consent regimes and Habitats Regulations screening, because a failure there ends the matter regardless of planning merit. Then Environmental Impact Assessment screening, then the statutory duties, then sequential policy gateways such as the flood risk sequential test, then the remaining policy tests and the section 38(6) balance.
Can the same benefit satisfy several tests?
A benefit can appear in more than one test because the tests ask different questions, but its weight does not multiply. Set the benefits out once with the weight attributed to each, then cross-refer when applying each test. The imperative reasons test under the Habitats Regulations is materially harder than very special circumstances.
Should overlapping harms be combined into one finding?
No. Harm to Green Belt openness and harm to the setting of a listed building are different harms under different tests, even where one building causes both. Identify each separately with its degree stated. Cumulative effect is still real, particularly for landscape character, so state it where it does arise.
Does the presumption in favour of sustainable development still apply?
Not where a habitats site is engaged, since the presumption is disapplied in that situation. For other protected areas the position depends on the current wording of the National Planning Policy Framework, published 17 August 2026, so check the edition in force rather than relying on older commentary.
Sources and further reading
This article is general guidance about the planning system in England and, where stated, the rest of the UK. It is not legal or professional advice. Check your local planning authority’s validation requirements and take professional advice for your specific site.