Planning with EA Flood Risk Standing Advice

The Environment Agency’s flood risk standing advice sets out when a local planning authority can decide a planning application against a fixed set of national rules, and when it must instead consult the Environment Agency (EA). For lower-risk development it removes the need for a case-by-case EA response, which keeps decisions moving. This guide explains what the flood risk standing advice is, which developments it covers, and how it has changed, because the gov.uk guidance was last updated on 28 May 2026 and now reads very differently from the version many applicants and consultants still work from.

The gov.uk standing advice was last updated on 28 May 2026. An assessment built on the older April 2025 version is one of the quickest ways to attract an objection.

What is the EA’s flood risk standing advice?

Flood risk standing advice is national guidance from the Environment Agency that lets a local planning authority assess flood risk on many planning applications without asking the EA to comment on each one. It applies in England only, covers lower-risk and lower-complexity development, and works alongside the National Planning Policy Framework (NPPF) and its Planning Practice Guidance on flood risk and coastal change.

The word “standing” is the key to its meaning: the advice stands ready to be applied to any qualifying application, so the EA’s position is fixed in advance and neither the applicant nor the authority has to wait for a bespoke response. Where a proposal falls outside its scope, the authority consults the EA as a statutory consultee instead. Working out which side of that line a site sits on is the single most useful thing an applicant can do early, and it shapes the whole flood risk assessment (FRA) that follows. For the wider picture, see our guide to the Environment Agency’s role in flood risk and planning.

The standing advice applies to full, outline, reserved matters and change-of-use applications, plus prior approval for flood risk under certain permitted development rights, permission in principle, and technical details consent.

What has changed in the standing advice since 2025?

The standing advice is not a static document, and that is where most out-of-date FRAs come unstuck. The Environment Agency has revised it several times, most recently on 28 May 2026, and an assessment built on superseded guidance is one of the quickest ways to invite an objection.

Two themes run through the changes: a clear expectation for a sustainable drainage strategy on qualifying development, and a firmer line on the quality of the flood data behind an assessment.

Which developments does standing advice cover?

Whether standing advice applies turns on the development class, and the guidance defines three classes precisely. Getting the class right is the foundation for everything that follows, because the same site can require EA consultation or standing advice depending on whether the proposal is major, minor or non-major.

When do you need a flood risk assessment?

A site-specific flood risk assessment is required for a wide range of development, not only sites shown in Flood Zones 2 and 3. According to the standing advice, an FRA should be completed for development that is:

• Flood Zone 2 or 3: including the functional floodplain, Flood Zone 3b.
• Flood Zone 1 of 1 hectare or more: larger sites need assessment even in the lowest zone.
• “Flood Zones plus climate change”: land shown at increased future risk from rivers or the sea.
• Surface water risk in Flood Zone 1: where the Flood Map for Planning shows risk now or in future.
• Critical drainage areas: sites within an area with critical drainage problems.
• SFRA future risk: Flood Zone 1 land the authority’s Strategic Flood Risk Assessment shows will be at increased lifetime risk.
• A rise in vulnerability: development that increases the vulnerability classification and may face sources other than rivers or the sea.

If you are unsure whether your site crosses any of these thresholds, our explainer on when you need a flood risk assessment works through the triggers, how to do a flood risk assessment for planning covers what a compliant report contains, and flood zones explained sets out the difference between Zones 1, 2 and 3.

When is a sustainable drainage strategy needed?

This is the biggest recent addition to the standing advice, and it is missing from many older FRAs. The guidance now expects a sustainable drainage (SuDS) strategy, as a standalone document or as part of the FRA, for any development that could affect drainage on or around the site, or that sits in an area at risk of flooding such as Flood Zones 2 or 3, or at risk of surface water flooding.

For major development, the SuDS scheme must set out minimum operational standards and maintenance arrangements, and the authority must consult the Lead Local Flood Authority on surface water drainage.

The system has to be designed in line with the national standards for sustainable drainage systems. Our guide to the 2025 national standards for SuDS explains what they require, what drainage information is needed for planning permission covers the supporting documents, and the role of the LLFA sets out who reviews the drainage side of an application.

The sequential and exception tests under standing advice

For most development in areas at risk of flooding, the sequential test still applies, and the exception test may follow. The sequential test steers development towards land at the lowest probability of flooding; the exception test, where required, checks that a proposal delivers wider sustainability benefits and will be safe for its lifetime without increasing flood risk elsewhere. A sequential test is required for major and non-major development where any building, access or escape route, land-raising or other vulnerable element sits in Flood Zone 2 or 3, in the functional floodplain, within “Flood Zones plus climate change”, at surface water risk, or is subject to other sources of flooding.

Several categories are exempt from the sequential test:

• Householder development: residential extensions, conservatories and loft conversions.
• Small non-domestic extensions: those with a footprint of less than 250 square metres.
• Most changes of use: except a change of use to a caravan, camping or chalet site, or to a mobile home or park home site.
• Surface-water-only sites: where a site-specific FRA shows the development will be safe for its lifetime without increasing flood risk elsewhere.
• Allocated sites: where allocated in the development plan through the sequential test, the use matches, and the known flood risk has not significantly changed.

The exception test is needed where the vulnerability classification is “highly vulnerable” in Flood Zone 2, “more vulnerable” in Flood Zone 3a, or “essential infrastructure” in Flood Zone 3a or 3b. For more, see what the sequential and exception tests are, the flood risk vulnerability classification under NPPF Annex 3, and our note on applying the sequential test after the Mead judgment.

When do you follow standing advice, and when do you consult the Environment Agency?

The authority consults the Environment Agency when a development falls outside the scope of the standing advice, and applies the standing advice itself when it falls within scope. The EA is a statutory consultee for higher-risk development under Schedule 4 of the Development Management Procedure Order 2015. The decision path below shows the logic in the order an authority works through it.

The main triggers for consulting the EA, rather than following standing advice, are proximity to a main river (any development within 20 metres of a main river or a flood defence, including change of use and minor development in Flood Zones 2 and 3); major or non-minor development in Flood Zones 2, 3 or 3b; and higher-vulnerability uses such as ‘essential infrastructure’ and ‘highly vulnerable’ development, or ‘more vulnerable’ and ‘less vulnerable’ uses of the specific kinds the guidance names. In Flood Zone 1, standing advice usually applies unless the site is near a main river or, above minor scale, in a critical drainage area; if the SFRA shows increased future risk, the authority treats the site as if it were in Flood Zone 2. ‘Water compatible development’ — uses such as docks, water-based recreation and some open space — tends to sit within standing advice rather than requiring consultation. If you have already received an objection, see what to do about an Environment Agency objection.

What must a standing-advice flood risk assessment include?

Following standing advice does not remove the need for an FRA; it shapes it. Even a qualifying, lower-risk proposal needs a site-specific assessment that is appropriate to the scale, nature and location of the development and proportionate to the degree of flood risk. In practice that means covering:

• Location and description: where the site is and what is proposed.
• Predicted flood levels: accounting for climate change over the development’s lifetime.
• Finished floor levels: proposed levels, set above the design flood level.
• Resistance and resilience: the flood protection measures built into the design.
• Plans and sections: the drawings and supporting detail the standing advice calls for.

Every level should be referenced to Ordnance Datum so heights are reported consistently. Climate change allowances vary by development type, vulnerability and location, and choosing the right ones is a common sticking point; our guide to climate change allowances for flood risk assessment sets out how they are applied. Where mitigation is agreed, the guidance is clear that planning conditions should list each measure specifically, for example a minimum finished floor level in metres above Ordnance Datum, rather than simply requiring the FRA to be implemented.

Why does the standing advice now scrutinise your flood data?

The April 2025 update, reinforced since, requires an FRA to appraise the suitability of the flood risk datasets it relies on. That appraisal has to consider when a dataset was produced, why it was produced, and its limitations. It is no longer enough to quote a flood zone; the assessment has to justify that the data behind it is appropriate for the development and up to date.

From 28 May 2026 the Flood Map for Planning includes new surface water climate change extents to the 2070s, the EA no longer recommends Check Your Long Term Flood Risk for planning, and the national picture rests on NaFRA2.

At Unda we appraise every dataset we use, whether it comes from the EA, a local authority or a third party, so that each assessment is defensible on both the technical detail and the choice of evidence. To go deeper, see what the Flood Map for Planning is, the Environment Agency flood data products 4, 5, 6 and 7, and managing flood risk with NaFRA2.

What this means for your planning application

Used well, the standing advice is a shortcut for the many developments that genuinely are low-risk, and a warning sign for those that are not. Working out early which route your site takes lets you scope the FRA correctly, avoid a late EA objection, and keep the application on track. Applied poorly, with stale data, a missing drainage strategy or the wrong development class, it produces exactly the delays and redesigns it is meant to prevent.

If you are planning a project and need support with a flood risk assessment or a drainage strategy, talk to our flood risk planning team. We appraise flood risk constraints, prepare policy-compliant FRAs and SuDS strategies, and handle both the standing advice route and full EA consultation. Where the sequential and exception tests apply, we prepare the evidence and work with local authorities and the EA to resolve issues early.

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