Approved Despite Flood Risk? What the 2026 NPPF Actually Requires

"Approved despite flood risk fears" is a stock headline in England's local press, and it usually means the same thing: residents describe flooded roads or overwhelmed drains, councillors record their worry, and permission is granted anyway. The reading most people take from it is that flood risk was noticed and then waved through. That is not what a grant of permission means. When a council approves a scheme approved despite flood risk, it is confirming that a defined set of national policy tests has been met, not deciding that flooding does not matter. Since 17 August 2026 those tests sit in a dedicated flood risk chapter of the National Planning Policy Framework, and if your own site carries a flood history the honest way to answer the objections is with a flood risk assessment for planning that works through each of them.

A committee is not answering "does this place flood?". It is answering a narrower question. Does this proposal pass the three flood risk tests national policy sets: appropriate location, safety for its lifetime, and no increase in flood risk elsewhere?

The three tests behind every flood-zone approval

The August 2026 NPPF rewrote and renumbered the flood risk policies, but the shape of the decision did not change. Three tests sit behind almost every approval in a flood risk area, and all three have to be satisfied before permission can lawfully follow. We set out the wider rewrite in our guide to the August 2026 NPPF flood risk and drainage changes; the tests themselves now read like this.

1. An appropriate location. The development is steered to the lowest-risk land reasonably available through the Sequential Test (Policy F5), with the Exception Test (Policy F6) applied where a higher-risk location cannot be avoided.
2. Safe for its lifetime. The scheme is safe across its whole design life (Policy F7), allowing for climate change, the vulnerability of its occupants, and safe access and escape in a flood.
3. No increase in flood risk elsewhere. Run-off is controlled and any lost floodplain storage replaced, so flooding is not pushed onto neighbours. This is now written into the Exception Test as a free-standing third limb.

The full framework is on GOV.UK in the National Planning Policy Framework, and the detailed method sits in the flood risk and coastal change planning practice guidance. A development that clears all three tests is compliant, even where the surrounding area has a real and remembered history of flooding. If you want the mechanics of the first test in full, we cover them in what the sequential and exception tests are.

Flooding can be real and still not decisive

The existence of historic flooding does not, on its own, fail a proposal. That is a hard distinction in a community that has flooded before, and it is where public anger and planning law tend to part company. Where a site has flooded in the past, the authority still has to work through the same three questions. Is the location acceptable in flood risk terms, will the development be safe across its lifetime, and will it make flooding worse beyond the boundary? A yes to all three can coexist with a street that still floods.

The two are not answering the same question. National mapping shows broad probability across the flood zones; a planning decision turns on a site-specific assessment that accounts for defences, finished floor levels, drainage design and climate change allowances. We unpicked that same mismatch when Aviva reported that one in nine new homes sits in a flood risk area, a figure that measures exposure, not whether any individual site was safely designed.

Test one: an appropriate location

The first test asks whether the development could go somewhere at lower flood risk instead. The Sequential Test (Policy F5) tries to steer it off flood-risk land altogether; the Exception Test (Policy F6) is the narrower second gate for schemes that genuinely cannot avoid it. The government's own guidance is blunt about the purpose of the first.

The August 2026 rewrite tightened this. The area of search is now capped in policy at the development's own catchment, a surface-water-only exemption was added, and the Exception Test gained its third limb on not increasing flood risk elsewhere. Presenting the search of alternative sites and the case for a higher-risk location is specialist work; where a scheme needs it, our sequential and exception test reports set it out to the standard an authority and the Environment Agency expect.

Test two: safe for the lifetime of the development

It would be wrong to read flood risk policy as caring only about what happens beyond the red line. A scheme that exports no risk but leaves its own residents unsafe should not be permitted either. This is the limb that gets least attention in public debate, because it is technical and design-led rather than dramatic. Under Policy F7, it means the authority has to weigh several things at once.

• Vulnerability. How the use is classified, since housing and a warehouse carry very different consequences if water arrives.
• Climate change. The flood risk climate change allowances applied so the site is tested against future conditions rather than today's.
• Access and escape. Whether people can leave, and emergency services reach the site, safely during a flood.
• Residual risk. What remains after mitigation, including the overtopping or failure of any defence.

Those allowances are not a matter of judgement: the uplifts for peak river flow and rainfall come straight from the Environment Agency's published climate change allowances for flood risk assessments, applied by river basin and time horizon over the development's design life.

None of this survives into a headline, but it is the core of a competent flood risk assessment, and it is exactly what a case officer signs off when a scheme in a flood zone is approved.

Test three: no increase in flood risk elsewhere

The third test is usually the flashpoint in a contested decision, and it is narrower than most residents assume. It does not ask a development to solve a settlement's existing flooding or to fix a catchment. It asks only that the proposal does not make things worse beyond its boundary.

"No increase elsewhere" is an incremental safeguard, not a cure for historic flooding. It holds the line; it does not roll it back.

In practice this is what drainage conditions and compensatory flood storage are for: replacing any floodplain storage a development displaces, and controlling run-off so downstream neighbours are no worse off. Some schemes go further and offer betterment, cutting run-off below the existing rate. Where a site sits in a designated critical drainage area, the scrutiny is tighter still. The test is real, but it measures the increment the development adds, not the flooding that was already there.

Three real 2026 approvals, and what the reporting left out

The pattern repeats across 2026, and in each case the reporting captured the objection more clearly than the reasoning. The table below sets the headline concern against what the decision actually turned on.

Near Northampton, West Northamptonshire Council approved up to 80 homes at Pineham in August 2026 after about 100 objections citing flooding; the Lead Local Flood Authority raised no objection, most of the site sat in Flood Zone 1, and a planning officer told members that refusing it would be "perverse". At Wymeswold, Charnwood Borough Council granted 53 homes in July 2026 despite fears rooted in Storm Henk and an ageing culvert, with a drainage strategy designed to cut run-off and deliver "overall betterment". In June 2026, Herefordshire Council approved more than 500 homes at Lower Bullingham, with watercourses folded into green infrastructure and buildings placed on higher ground. Read together, the decisions share a shape: residents raise flooding, councillors acknowledge it, and permission follows once the technical consultees are satisfied and the policy tests are met.

What the courts have said

The higher courts have reached the same conclusion, and this is the part of the picture that has moved most. Failing, or not carrying out, the Sequential Test is no longer treated as automatically fatal. In the January 2026 Gladman judgment, the High Court held that the absence of a sequential test does not end the matter; it is weighed in the planning balance, and a refusal that had ignored voluntarily offered flood betterment was quashed. In the Yatton judgment, the court declined to overturn an inspector's grant of outline permission for 190 homes on land in Flood Zone 3a, finding no error of law where the test's consequences had been weighed rather than treated as a knockout.

The direction is consistent: the tests still have to be applied and evidenced, but the consequence of a shortfall is a matter of planning judgment, not an automatic refusal. That is why committees are so often advised that a refusal on flood grounds will be hard to sustain at appeal once consultees are content. The August 2026 NPPF pushes back a little the other way, wording the outcome for incompatible uses in the wrong flood zone as refusal rather than a weighing exercise. That is one reason campaigners at the Town and Country Planning Association argue the framework should be tightened further still.

Why public mistrust persists

Even when the tests are properly satisfied, public scepticism is not irrational. Two structural weaknesses feed the doubt, and both are worth taking seriously rather than dismissing. The first is enforcement. Flood mitigation is very often secured by planning condition, on the assumption that measures will be built and then maintained. The Public Accounts Committee found that assumption is not being checked.

The second is visibility of reasoning. The Environment Agency, as a statutory consultee, does object to some applications on flood grounds, and permission sometimes follows regardless, because the objection was resolved, withdrawn or outweighed in the planning balance. Without that reasoning being made plain, an approval that follows an objection can look like advice being ignored, even where every test was considered satisfied. The Committee's Resilience to flooding report sets out the enforcement gap in full. Both problems are about trust and transparency, not about the policy tests being absent.

Are we asking the wrong question?

"Approved despite flood risk fears" frames the choice as a binary: development or safety. The planning system applies something more structured. Is the site appropriately located in flood risk terms? Will the development be safe for its lifetime? Will it increase flood risk elsewhere? Where the honest answer to all three is settled, permission can lawfully follow, even in a place with a long memory of flooding. That does not close down legitimate argument about cumulative impact, the state of drainage infrastructure, or whether conditions are ever inspected. But it moves the conversation from "flood risk was ignored" to a sharper question: are the safeguards in national flood risk policy being applied rigorously and transparently enough?

If you are promoting a site where flooding is part of the story, whether it has flooded before, sits in Flood Zone 2 or 3, or falls within a critical drainage area, the way to answer that question is with evidence. Unda's flood risk consultants prepare a flood risk assessment for planning that addresses the sequential and exception tests, lifetime safety and off-site impact to the standard your authority and the Environment Agency expect.

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