Requesting an EIA scoping opinion and what to put in it

A scoping opinion is the local planning authority's written view on what your environmental statement has to cover, and you get one by making a request under regulation 15 of the Town and Country Planning (Environmental Impact Assessment) Regulations 2017. The regulations set a short list of what the EIA scoping opinion request must contain, and the authority has five weeks to respond unless a longer period is agreed in writing. Most of the value sits in what you choose to add beyond that minimum.

Scoping is optional. Skipping it is a decision to let the authority and its consultees define the assessment after you have already spent the survey budget.

What the opinion does and when to ask for it

The opinion fixes the agreed scope of the assessment: which topics are assessed in full, which are scoped out, which receptors matter, which years are modelled and which guidance applies to each chapter. It is not binding in the sense that a court would enforce it, and the authority can ask for more later if the scheme changes. In practice a documented scoping opinion is the strongest defence against a late request for an extra chapter.

Ask once the development description is stable enough to describe honestly. That usually means after the quantum, the access strategy and the broad layout are settled, and before the seasonal ecology or noise surveys are commissioned. Request it too early and you describe a scheme that changes. Too late, and the opinion arrives after the surveys are booked.

For development that needs an Environmental Impact Assessment, the regulations require the environmental statement to be prepared by competent experts, so the scoping request itself is normally assembled by the consultant team that will write the chapters.

What the request has to contain

Regulation 15 requires a plan sufficient to identify the land, a brief description of the nature and purpose of the development, a description of its likely environmental effects, and whatever other information or representations the applicant wishes to provide. That last limb is the one worth using properly.

A request that gets a usable opinion normally runs to a short scoping report containing:

1. A site description with the red line and any blue land, plus the existing use and surrounding receptors.
2. A development description with the quantum, phasing, construction programme and demolition.
3. The baseline data already held, including any surveys completed and their dates.
4. A topic-by-topic table of proposed chapters, with the method, the guidance relied on, the study area and the receptors for each.
5. The topics proposed to be scoped out, each with a reason.
6. The alternatives to be reported, since Schedule 4 requires a description of reasonable alternatives considered.
7. A plan of the consultees you have already approached and what they said.

Keep the development description consistent with the screening request if one was made. Inconsistency between the two invites a challenge that the screening was done on a different scheme.

Proposing the methodology chapter by chapter

Treat each chapter as a proposal the authority can accept, amend or reject, and make accepting it the easy option. For each topic state the assessment method and its source, the spatial and temporal study area, the sensitivity criteria, the magnitude criteria and how significance is derived from the two.

Where a topic has well-established national guidance, name it and version it. Where it does not, say so and explain the basis of the professional judgement you intend to apply. Consultees are far more comfortable with a declared judgement than with a matrix that appeared from nowhere.

Scoping matters out and justifying it

Scoping out is legitimate and the regulations are built around likely significant effects rather than every effect. The test is one of likelihood and materiality, and the justification has to be specific to the site.

Good reasons tend to be factual: there is no source pathway to the receptor, the receptor is absent, the activity does not occur in this scheme, or the effect is controlled by a separate consenting regime the authority can rely on. Poor reasons tend to be bare assertions that an effect will be small.

Be careful with topics that have become politically visible. Health, climate resilience and cumulative effects are scoped out less often than they used to be, and an authority that agrees to scope out climate change may still face a consultee objection later. The determinants a health chapter covers are set out in health determinants inside a health impact assessment. If you expect that, scope the topic in at a proportionate level rather than fighting to remove it.

How consultee responses shape the opinion

Before adopting an opinion the authority must consult the consultation bodies, which is why the five-week period is rarely generous. The responses you get are often more useful than the opinion itself, because they tell you what the Environment Agency, Natural England, Historic England, the lead local flood authority and the highway authority will actually ask for at application stage.

Two practical moves help. Send the draft scoping report to the main consultees informally at the same time as the formal request, so their response to the authority is already informed. And ask the case officer whether the authority intends to adopt its own text or simply append the consultee replies, because an opinion that is only a bundle of appendices leaves the scope unresolved.

Where a consultee asks for something you consider disproportionate, record the disagreement in the environmental statement and explain the approach taken. An unexplained departure from a scoping opinion is a recurring ground of objection.

What scoping does to the programme

Five weeks is the statutory period for the opinion, not the elapsed time. Allow for the scoping report to be written, for consultee responses, and for the chapters to be re-planned once the opinion lands. A sensible assumption is a couple of months from instruction to a settled scope.

That matters because of survey seasons. Bat emergence survey work runs through the warmer months, great crested newt environmental DNA sampling has a fixed statutory-style window in the spring, and botanical survey work needs the growing season. Scope after the season closes and the assessment waits a year. Scope before it opens and the surveys follow the agreed methodology rather than being repeated.

Determination periods also lengthen: the statutory period for EIA development is 16 weeks rather than the eight or 13 weeks that applies to other applications, and that is before any extension of time is agreed.

A scoping opinion is also where you learn whether the authority expects a standalone chapter on a topic you had planned to cover inside another. Finding that out in week four costs less than finding it out at validation. For the wider document set that sits alongside an environmental statement, the full list of report types is a useful cross-check, and the related evidence on service capacity is covered in utilities capacity evidence for a residential scheme.

Start the development description and the chapter table early, then draft your scoping request against them. PlanScope can produce a first draft of the supporting documents around an environmental statement, including the Planning Statement that explains the policy case.

This is general guidance, not legal advice; check the position with your local planning authority or a qualified professional before relying on it. An environmental statement must be prepared by competent experts under the 2017 Regulations, so a PlanScope draft is a starting point for that professional rather than a substitute. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.