Budgeting an environmental statement for Schedule 2 work

An Environmental Statement for Schedule 2 development costs what it costs because regulation 18 of the Town and Country Planning (Environmental Impact Assessment) Regulations 2017 requires it to be prepared by competent experts, and requires the applicant to provide a statement outlining their expertise or qualifications. That is a legal requirement rather than good practice. Nobody can draft their way around it, and an AI-assisted draft is a starting point for those experts rather than a substitute for them.

For a major scheme the evidence base commonly runs to £50,000 or more, and the shape of that spend is predictable even where the total is not.

What the Regulations require of the authors

Three provisions set the floor.

Regulation 18 requires the Environmental Statement to be prepared by competent experts and the applicant to state their expertise. Schedule 4 sets the content: a description of the development, the baseline, the likely significant effects, the reasonable alternatives considered, the mitigation proposed, monitoring arrangements and a non-technical summary. And regulation 6 governs screening, where the authority decides whether a Schedule 2 project with its thresholds requires assessment at all.

Screening is the first budget decision and the least costly one. A screening request costs a fraction of an Environmental Statement, and a negative screening opinion removes the obligation entirely. Where the scheme sits near a threshold, for instance an urban development project on a site of around 5 hectares or in the region of 150 dwellings, it is worth designing to stay below it if the planning case allows.

A scoping opinion under regulation 15 is the second. It is not compulsory and it is almost always worth obtaining, because it limits what the authority can later say is missing, and that is the main protection against addenda.

Link the obligation to the deliverable early. An Environmental Impact Assessment is one of the report types where a competent professional is legally required, and the budget should name the experts chapter by chapter from the outset.

Chapter structure and where the cost concentrates

An Environmental Statement is a set of technical chapters with a coordinating layer over them, and the cost is unevenly distributed.

Ecology, transport and archaeology are usually the three largest, and the first two are also the most likely to produce a result that changes the scheme. Spend on those first.

The coordinating layer is routinely under-budgeted. Making nine chapters consistent, with a shared description of development, shared assumptions and a single mitigation schedule, is real work, and the person who does it is the one who stops the authority finding contradictions.

Baseline survey seasons as a cost driver

Seasons do not change the fee much. They determine when you can spend it, and on a scheme carrying holding costs that is the expensive part.

• Bat emergence and re-entry surveys run May to September, optimal May to August.
• Great crested newt environmental DNA sampling runs 15 April to 30 June.
• Breeding bird surveys run March to August, wintering bird surveys October to March, so a full ornithological baseline spans a year.
• Botanical surveys run April to September.
• Reptile surveys run April to October, best April to May and September.
• Traffic counts need neutral months, avoiding August, December and school holidays.
• Landscape photography needs both winter and summer conditions for a credible assessment.

A project that misses the bird season loses a year on the ornithology chapter. That is why the ecology scope should be set in the first month of the programme, before the masterplan is settled, and why quotes for the same scope differ so much, which we look at in why ecology survey costs vary between quotes.

The Preliminary Ecological Appraisal is the document that tells you which seasonal surveys you need, so commission it first and commission it early in the calendar year.

Cumulative assessment and the data it needs

Cumulative effects are where Environmental Statements are most often found wanting, and the work is administrative rather than technical.

You need a list of other development to assess in combination. That means a search of the authority's planning register, usually over a defined radius and a defined period, capturing permitted schemes, undetermined applications and allocations. Each has to be characterised well enough to be assessed, which sometimes means downloading another applicant's transport chapter.

Three things keep this down. Agree the radius, the date range and the inclusion criteria in the scoping opinion, so the list is defined rather than arguable. Ask the authority for its own list, since some maintain one for exactly this purpose. And do the search once, properly, with a dated record, rather than repeatedly.

Budget for a refresh. On a scheme determined 12 months after submission, the cumulative list will have moved, and the authority may ask for an update.

Non-technical summary and consultation copies

Small line, easy to forget.

The non-technical summary is a Schedule 4 requirement and it has to be readable by a non-specialist. It is not a cut-down version of the chapter conclusions, and a good one takes a specialist writer a week.

Publicity obligations under the Regulations require the Environmental Statement to be made available, with copies obtainable at a reasonable charge. Electronic publication carries most of this now, though a handful of hard copies for the authority, statutory consultees and the deposit point still need producing. Printing a multi-volume statement with figures at A1 is not a trivial cost, and it is one that lands at the point the rest of the budget is spent.

Addenda after further information requests

This is the overrun that hurts.

Regulation 25 allows the authority to require further information where it considers the Environmental Statement inadequate, and the response is normally an addendum. The addendum then triggers its own publicity and consultation period, which adds weeks to the determination of a scheme already running on a 16 week statutory period for EIA development.

The cost is threefold: the technical work, the republication, and the holding cost of the delay. Addenda arise most often from an inadequate cumulative assessment, a baseline survey carried out outside the right season, or a mitigation schedule that does not match what the chapters propose.

Two defences. Get a scoping opinion and follow it, because an authority that scoped out a topic struggles to request it later. And commission an internal review of the full statement by someone who has not written any of it, before submission. That review costs a fraction of an addendum.

Where the scheme is large enough, a planning performance agreement puts the authority's resourcing and timetable on a formal footing, and what that buys is covered in planning performance agreements and what you are paying for.

Sequencing the spend across two financial years

Most Environmental Statements span two financial years, so plan the cash flow rather than the total.

Year one usually carries screening, scoping, the preliminary ecological appraisal, the first seasonal surveys, baseline monitoring for air quality and noise, and the ground investigation. Year two carries the remaining seasonal surveys, the modelling, chapter drafting, coordination, the summary and the publicity costs.

Three practical rules. Front-load anything season-dependent, because a missed window moves the whole programme. Hold back a contingency equal to a meaningful proportion of the technical budget for a regulation 25 addendum, since the probability is not low. And do not let the masterplan freeze lag the baseline, because a design change after the surveys are complete can invalidate the assessment of effects.

For the supporting documents that sit alongside the statement rather than within it, see PlanScope pricing to compare the drafting routes.

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.