What changed in the 2026 NPPF compared with the 2024 version?

The biggest structural change is that the principle of development is now a list of specific routes rather than one balancing exercise. Numbered paragraphs were replaced by lettered policy codes, so paragraph 143 became policy GB2 and paragraph 84 became HO11. Inside a settlement the answer starts as yes. Outside one you have to fit a listed route, but there are more routes than before.

Is my field outside the settlement boundary now developable?

Possibly, and by more routes than before. Being outside a settlement boundary is not a refusal in itself. Filling a gap in a group of houses, redeveloping land that has been built on, reusing an existing building, and addressing an evidenced unmet housing need are separate routes, and you only need one. The most common winning argument is that the council cannot show a five year supply of housing land.

What counts as grey belt under the 2026 NPPF?

Grey belt is land in the Green Belt, including previously developed land, that does not strongly contribute to any of three purposes: checking the sprawl of a large built-up area, preventing neighbouring towns merging, and preserving the setting of a historic town. Protecting the open countryside in general is deliberately excluded from the test. If land fails to strongly serve all three, it is grey belt.

What counts as evidenced unmet need in the 2026 NPPF?

It depends entirely on where the land is, and this is the most consequential asymmetry in the framework for small sites. Outside the Green Belt the wording is 'including, but not limited to' a supply failure, so any evidenced unmet need qualifies. Inside the Green Belt a footnote says it means only a five year supply shortfall or a delivery test result below the threshold. Nothing else counts.

What is the 35 dwellings per hectare rule near stations?

Within reasonable walking distance of a well-connected station, residential schemes must achieve at least 35 dwellings per hectare within the net developable area, rising to 45 where the service frequency is at least twice the minimum required. It is a floor, not a cap, and development that fails it should be refused. Only sub-major schemes that can demonstrate the standard is inappropriate or not possible are excepted.

What is a well-connected station in the 2026 NPPF?

A railway station or underground, tram or light rail stop located within one of the top 80 Travel to Work Areas by Gross Value Added, and served in the normal weekday timetable throughout the daytime by at least 4 trains or trams per hour overall, or at least 2 per hour in any one direction. Planned upgrades or an operator agreement can satisfy the frequency limb.

Can I build a single house in the open countryside?

Only through one policy, and only if one of five circumstances applies: an essential need for a rural worker to live at their place of work, enabling development to secure a heritage asset, reuse of a redundant or disused building, subdivision of an existing house, or a design of genuinely exceptional quality. Being isolated removes every other route entirely, so this matters more than it first appears.

What counts as limited infilling within a group of houses?

Nobody has defined it. The framework allows limited infilling within groups of houses outside settlements, but defines neither 'limited' nor 'group of houses', and inspectors read both narrowly. In practice it means a genuine gap with houses on either side, filled at a scale that reads as completing the frontage rather than extending the settlement.

Does the 2026 NPPF help self-builders?

Indirectly, and more outside the Green Belt than inside it. There is no policy that says yes to self-build. The case is built from three things: people wishing to commission or build their own homes are a named group whose needs councils must assess, homes meeting evidenced need attract substantial weight, and outside the Green Belt an unmet self-build register duty counts as evidenced unmet need.

What are the Golden Rules for Green Belt development?

Three contributions, all required, for major development involving housing in or released from the Green Belt. Affordable housing at the development plan requirement, or until such a policy exists the highest existing requirement plus 15 percentage points capped at 50%, with 50% by default where none applies. Plus necessary infrastructure improvements, and new or improved publicly accessible green space.

Which NPPF policies mean an automatic refusal?

Ten, for housing purposes: inefficient use of land, conflict with a design code without justification, severe transport or highway safety impact, an incompatible use in a flood zone, inability to be made safe from flooding, unmitigable biodiversity harm, major development in a Protected Landscape, harm to a habitats site or irreplaceable habitat, and substantial harm to a designated heritage asset. Everything else weighs in the balance instead.

Published 17 August 2026

The 2026 NPPF, explained for landowners

The National Planning Policy Framework is the document that decides whether land in England can be built on. It was rewritten and republished on 17 August 2026, and the rewrite matters: the new version is more rules-based than the one it replaced, which means for the first time you can reasonably check your own land against it.

This page explains what changed. Every claim on it links to the specific policy, and there is a free tool that applies the whole thing to your land.

Check your land Explore the rules

01The three changes that matter most

Inside a town or village, the answer starts as yes

There is no longer a list of categories to get through. Development within a settlement should be approved unless the benefits would be substantially outweighed by the harm, and it is for the council to show that. The exceptions are narrow and specific.

Outside one, there are more doors than before

Seven separate routes can apply to housing outside a settlement, and they are alternatives rather than a hierarchy. Only one has to fit. The widest is that the development addresses an evidenced unmet housing need, and outside the Green Belt that phrase is deliberately open-ended.

Green Belt land that does no Green Belt job is now easier

Land in the Green Belt that does not strongly serve any of three specific purposes is called grey belt. Protecting open countryside in general is deliberately not one of those purposes, which is what makes the category meaningful rather than empty.

02The detail most people will miss

The same three words mean two different things depending on where your land is.

“Evidenced unmet need” appears in two places. Outside the Green Belt the framework says “including, but not limited to” a housing supply failure, so any evidenced shortage can qualify. Inside the Green Belt a footnote says it “means” a five year supply shortfall or a delivery test failure, and nothing else.

Outside the Green Belt: open

Any evidenced unmet need can qualify. A five year supply failure and a Housing Delivery Test result below 75% are given as examples, not as the limits.

Inside the Green Belt: closed

For housing, restricted to a five year supply shortfall (including any buffer) or a Housing Delivery Test result below 75%. Nothing else counts.

For self-build this is decisive. A council that has not granted enough plots to meet demand on its register is in breach of a statutory duty, and outside the Green Belt that opens a route. Inside it, the same fact does nothing.

The full explanation

03The numbers worth knowing

10 homes or 0.5ha: What counts as major development. Either limb is enough, so a half-hectare site with three houses on it is still major.
800 metres: Reasonable walking distance to a station, or about 10 minutes' walk where a hill or a main road gets in the way.
35 to 45 homes per hectare: The minimum density near a well-connected station, measured on the part you actually build on. Failing it means a refusal.
75%: The delivery test threshold. Below it, the case for new housing sites gets considerably stronger.
1 July 1948: The baseline for measuring whether a Green Belt extension is disproportionate. Outside the Green Belt the baseline is the building as it stands today.
15 percentage points: The Green Belt affordable housing uplift over the existing requirement, capped at 50%. Not a flat 50%, as is often reported.

04Questions answered

Check your own land against all of it

Free, no sign-up, and it tells you plainly what it cannot know. If you would rather talk to someone, the number is on the tool page.

Start the check

Reflects the National Planning Policy Framework (2026), published 17 August 2026. This page last reviewed 18 August 2026. Read the framework.