Question 1

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

Accepted Answer

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.

Question 2

Is my field outside the settlement boundary now developable?

Accepted Answer

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.

Question 3

What counts as grey belt under the 2026 NPPF?

Accepted Answer

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.

Question 4

What counts as evidenced unmet need in the 2026 NPPF?

Accepted Answer

More than the two measures most people cite. The framework names the lack of a five year supply of deliverable housing sites and a Housing Delivery Test result below the threshold, but the wording is 'including, but not limited to', so an evidenced unmet need for affordable housing, self-build plots, older people's housing or rural housing qualifies too. The need has to be evidenced, and the council's own documents are usually where the evidence comes from.

Question 5

What is the 35 dwellings per hectare rule near stations?

Accepted Answer

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.

Question 6

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

Accepted Answer

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.

Question 7

Can I build a single house in the open countryside?

Accepted Answer

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, which makes the word itself worth contesting.

Question 8

What counts as limited infilling within a group of houses?

Accepted Answer

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.

Question 9

Does the 2026 NPPF help self-builders?

Accepted Answer

Indirectly, but effectively. 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 an unmet self-build register duty counts as an evidenced unmet need.

Question 10

What are the Golden Rules for Green Belt development?

Accepted Answer

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.

Question 11

Which NPPF policies mean an automatic refusal?

Accepted Answer

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.

The new NPPF, explained for landowners, self-builders, architects and planners

Two free tools, no sign-up

Assess a particular site

Test the rules

See it work

Why we built them

Questions answered

The three changes that matter most

Inside a town or village, the answer starts as yes

Outside one, there are more doors than before

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