EIA scoping opinions and how to use one

An EIA scoping opinion is a written statement from the local planning authority setting out the information it considers your environmental statement should contain. You ask for it under regulation 15 of the Town and Country Planning (Environmental Impact Assessment) Regulations 2017, the authority consults the statutory consultation bodies, and it must adopt the opinion within five weeks unless a longer period is agreed in writing. Requesting one is optional. On any scheme where the environmental statement will cost more than the scoping fee by an order of magnitude, which is most of them, it is worth doing.

Scoping against screening

These are different steps and they get confused constantly.

Screening answers whether an environmental impact assessment is required at all. For Schedule 2 development it turns on whether the development is likely to have effects on the environment that are material enough to require assessment, judged against the selection criteria in Schedule 3.

Scoping answers what the environmental statement must cover, once you know that one is needed. It addresses the Schedule 4 information, the topics to be assessed, the methodologies to be used and the alternatives to be considered.

You can request both, and on a borderline scheme you generally should, in that order. A scoping request submitted before the screening position is settled invites an authority to treat the development as EIA development by default.

Why scoping is optional and usually worth doing

Nothing in the Regulations obliges an applicant to seek a scoping opinion. Plenty of environmental statements are produced without one.

Four reasons to ask anyway.

It gets the consultation bodies' views before the survey work is commissioned, which is when accommodating them costs least. It produces a document that the authority has adopted, which constrains later demands for topics it agreed were not needed. It reduces the risk of a regulation 25 request for further information after submission, which is the single most disruptive event in an EIA programme. And it forces the project team to define the development properly at an early stage, because you cannot scope a scheme you have not described.

The counter-argument is real too. Scoping takes five weeks minimum and can produce a longer list than you started with, particularly where a consultee treats the request as an opportunity. On a small Schedule 2 scheme with well-understood effects, some applicants take the view that a well-reasoned methodology chapter is a better use of the fee.

What a scoping request has to contain

The Regulations set a short list. A plan sufficient to identify the land. A brief description of the nature and purpose of the development, and of its likely effects on the environment. And any other information or representations the applicant wishes to provide.

That last item is where the work goes. A request containing the statutory minimum invites the authority and its consultees to scope in everything, because they have nothing to narrow it against.

A useful request includes:

1. A description of the development with parameters, including the site area, floorspace or unit numbers, height ranges and construction programme.
2. A constraints plan showing designations, watercourses, heritage assets and receptors within a stated radius.
3. A proposed topic list, with a short justification for each topic scoped in, and a fuller one for each topic scoped out.
4. Proposed methodologies and the guidance each follows.
5. A note on alternatives to be considered.
6. Any survey work already completed, with dates.

Scoping out is the part that earns the fee. Write the justification as you would want it read back to you at inquiry.

The consultation the authority must carry out

The authority must consult the consultation bodies before adopting the opinion. In practice that means the statutory environmental bodies plus the internal consultees the council would ask on any application: highways, environmental health, the lead local flood authority, the conservation officer, the ecologist.

You will not usually see those responses until the opinion is issued, and the opinion may attach them. Read the attachments as well as the covering opinion, because consultee comments frequently go further than the opinion itself and the distinction matters later.

Where a European site could be affected, the habitats regulations assessment process runs alongside and is not part of the EIA. Keep the two separate in your scoping request, since the tests differ and so does the decision maker's duty. The note on habitats regulations assessment sets out how that process works.

The five week period and what comes out of it

The authority must adopt the opinion within five weeks of receiving the request, or within a longer period agreed in writing. Before adopting, it may tell you in writing that it needs further information, and the clock is affected accordingly.

If the authority fails to adopt an opinion within the period, you can apply to the Secretary of State for a scoping direction. That route is available and rarely used, largely because applicants would rather keep the authority engaged than escalate at the start of a two year programme.

A fee applies to a scoping request under the current planning fee regulations. The figures are indexed, so check the current schedule rather than a figure quoted in an older article.

What you receive is an opinion, not a permission. It does not bind the authority absolutely, and it cannot cure a defective environmental statement. What it does is set the reference point that regulation 18 then works from, because an environmental statement must be based on the most recent scoping opinion where the development remains materially the same.

Using the opinion to hold the line on scope

The opinion is most useful after submission, when a consultee asks for an assessment that was scoped out.

The answer in that situation is not a refusal to engage. It is a short, sourced note pointing to the adopted opinion, restating the reasoning for scoping the topic out, and addressing whatever new information prompted the request. Where the scheme has changed materially since scoping, that argument weakens, which is a good reason to avoid describing a scheme at scoping stage that you know will change.

Where consultees ask for more than is proportionate at the scoping stage itself, the Regulations help. The environmental statement must include the Schedule 4 information relevant to the specific characteristics of the development and reasonably capable of being gathered, having regard to current knowledge and methods. Proportionality is built into the test. Argue it in writing during scoping rather than after the opinion is adopted.

Recording a departure from the opinion

Sometimes the assessment departs from the opinion. Survey access is refused, a methodology is superseded, a topic turns out to need less work than anticipated.

Deal with it head on in the methodology chapter of the Environmental Impact Assessment documentation. Set out what the opinion asked for, what was done instead, and why. A table listing each scoping requirement against where it is addressed, with departures flagged, takes an afternoon and removes an entire category of objection.

Silent departures are what get challenged. An assessment that quietly drops a topic the authority asked for gives an objector a procedural argument that has nothing to do with the environmental merits.

An environmental statement must be prepared by competent experts, and the submission has to be accompanied by a statement outlining their relevant expertise and qualifications. That is a legal requirement under the 2017 Regulations, not a matter of good practice. An AI-assisted draft can assemble the scoping request structure, the topic justifications and the regulatory framing, and flag the site facts it does not hold. The assessment itself belongs to the experts.

To see which supporting documents an EIA scheme is likely to need alongside the environmental statement, browse the report types by category.

This is general guidance, not 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. For specialist technical reports, qualified professional input may be required.