Green belt land near stations: a new release route under the draft NPPF

Green belt land near stations: a new release route under the draft NPPF

For landowners with sites close to a train station, the planning rules that decide if you can build on green belt land are changing. A revised draft of the National Planning Policy Framework, published for consultation in December 2025, proposes a new route to release land near stations for housing, even where that land sits within the green belt.

This is a distinct and, in some respects, more significant change than the introduction of grey belt land in 2024. It does not depend on a site meeting the grey belt definition at all. Instead, it is built entirely around proximity to well-connected rail infrastructure. 

This article sets out what the draft policy says, how it works alongside the existing grey belt golden rules, and what it means in practice for anyone holding or promoting land near a station.

What is grey belt land, and how is it different from the green belt?

Grey belt land was introduced into national policy in December 2024. It describes previously developed land within the green belt, or other green belt land that makes little contribution to the main purposes of the designation, such as preventing urban sprawl or the merging of neighbouring towns.

Land classed as grey belt does not lose its green belt status. What changes is the weight given to development proposals on it. Where a site meets the grey belt test, a scheme can be treated as appropriate development rather than facing the much stricter “very special circumstances” test that normally applies in the green belt.

The draft NPPF refines this definition further, removing an earlier link to a footnote that had made it unclear which sites qualified. In practice, this should make it easier to identify grey belt land, rather than relying on a case-by-case judgement that could be challenged.

Can you build on green belt land near a railway station?

Under the draft NPPF, the answer for many sites moves from a firm no to a qualified yes. The draft introduces housing and mixed-use schemes within reasonable walking distance of a well-connected railway station as a form of development that should not automatically be treated as inappropriate in the green belt.

This matters because it sidesteps the grey belt test altogether. A site could fail to meet the grey belt definition, and still benefit from this route, provided it is close to a qualifying station. Under the current NPPF green belt framework, this kind of exemption simply does not exist.

The government has not fixed a precise definition of “reasonable walking distance” in the consultation document itself, but ministers have referenced 800 metres, roughly a ten-minute walk at a moderate pace, as the working assumption. The draft also expects new development in these locations to be built at a minimum density, with figures around 50 homes per hectare discussed in the supporting material.

Independent analysis of the proposals has identified hundreds of thousands of potential new homes sitting within reasonable walking distance of qualifying stations across England. Whether that potential is realised will depend heavily on how local planning authorities and the final wording of the NPPF define a “well connected” station.

Do the grey belt golden rules apply to station-based sites?

Yes. Where major housing development is proposed on green belt land, including sites coming forward through the station proximity route, the grey belt golden rules continue to apply. These were introduced alongside the original grey belt definition and are not being removed by the draft framework.

The three golden rules require a scheme to deliver each of the following.

• Affordable housing, in line with the development plan, or 15 percentage points above the highest existing local requirement, up to a cap of 50 per cent, where no such plan policy exists.
• Necessary improvements to local or national infrastructure, so that new development does not simply add pressure to roads, schools and health services.
• New or improved green space that is accessible to the public, so that residents can reach good quality open space within a short walk of home.

A scheme that satisfies all three should be given significant weight in favour of approval. For sites near stations, this means the presumption created by proximity to good public transport does not remove the need for careful early planning around affordable housing, infrastructure, and green space provision.

What does this mean for landowners and developers?

For anyone holding land within, or close to, the green belt near a train station, the draft NPPF changes the questions worth asking. A site that was previously not worth promoting because it failed the grey belt test may now deserve a second look, purely on the strength of its transport connections.
Getting this right depends on more than its location. A robust assessment should cover the following.

• Whether the nearest station is likely to meet the government's definition of well connected, based on service frequency and destinations served.
• Whether the site falls within the emerging walking distance threshold, and how that distance should be measured on the ground rather than as the crow flies.
• Whether the site could also meet the grey belt definition, which may open an alternative or additional route to release.
• What affordable housing, infrastructure and green space contributions a scheme is likely to need to meet the golden rules, and how that affects viability.

This is where early advice from a land planning and development specialist is worthwhile. Understanding how to value development land that may benefit from this new route puts landowners in a far stronger negotiating position.

What should you do while the NPPF is still in draft?

The consultation on the draft NPPF closed in March 2026, and government has repeatedly said that a final version is expected during the summer. At the time of writing, that final wording has not been confirmed, and some of the detail, including the precise walking distance threshold and density expectations, may still change before publication.

That uncertainty is not a reason to wait. Local planning authorities are already being encouraged to prepare their plans with the direction of the draft framework in mind, and early movers on strong sites are likely to be better placed once the policy lands. Reviewing a land holding now, against both the existing grey belt tests and the emerging station proximity route, means a scheme can be ready to progress as soon as the position is confirmed.

It is also worth checking a site's position against wider policy themes running through the draft framework, such as the presumption in favour of sustainable development and changes to housing land supply tests. A site that benefits from more than one strand of the emerging policy is likely to be a stronger candidate for release.

Speak to our land planning and development team

BTG Eddisons has been helping landowners, promoters and developers understand and act on planning policy for more than 180 years. Our land planning and development team tracks changes to the NPPF closely, so our advice reflects the direction of travel, not just the rules as they stand today.

If you own or are promoting land near a railway station, whether it currently meets the grey belt definition, our team can help you understand your options under the draft NPPF and prepare your site accordingly. Call 0330 191 8107, email [email protected], or complete the contact form below to arrange a consultation.