Before we get stuck into this further post on the NPPF, I do need to allay possible misapprehensions of Daily Mail readers this morning: the PF in NPPF does not stand for Pergola Framework.
Right, here we go. As a follow-on to my 31 August 2026 blog post Push The Button: The Pro-Development Presumptions, “Substantial Weight” & “Support” Policies In The New NPPF I wanted to zoom in on policy S5.1 j.
For development outside settlements, there is this seesaw/fulcrum policy S5.
If your development does not fall within one of the ten categories listed, a to j, the national policy is that planning permission should only be granted “in exceptional circumstances, where the benefits of the proposal would substantially outweigh the adverse effects, including to the character of the countryside and in relation to promoting sustainable patterns of movement”.
However, if it falls within one or more of categories a to j, planning permission should be granted “unless the benefits of doing so would be substantially outweighed by any adverse effects, when assessed against the national decision-making policies in this Framework”. “Substantially outweighing” includes where the development trips one of 15 specific “refusal” policies in the document. This pro-development presumption even applies to green belt development, which is not “inappropriate development “ under policy GB7 so includes e.g. grey belt development.
I said I wanted to focus on category j within policy S5.1. Category j is:
“Development which would address an evidenced unmet need (including, but not limited to, development proposals involving the provision of housing where the local planning authority cannot demonstrate a five year supply of deliverable housing sites or scores below 75% in the most recent Housing Delivery Test), and where the development would:
i. Be physically well-related to an existing settlement (unless the nature of the development would make this inappropriate) and be of a scale which can be accommodated taking into account the existing or proposed availability of infrastructure; or
ii Comprise major development for freight and logistics purposes which accords with policy E3.”
It is crucial to know what amounts to an “evidenced unmet need” and indeed the extent of need which has to be shown in order to trigger this strong (as strong as the old NPPF “tilted balance”) S5 pro-development presumption. Rather than a seesaw, or fulcrum, maybe knife-edge would be more appropriate.
It’s clear that category j does not just relate to housing proposals. When we are dealing with evidencing a need for business land and premises, we have policy E2.2 to help us:
“Where a development proposal is required to demonstrate whether an unmet need exists (including under policy S5) consideration should be given to whether:
a. Market signals indicate an undersupply of specific types of business land or premises, taking into account the anticipated catchment area for the type of development proposed, the changing needs of different sectors and the availability of suitable existing land and buildings; or
b. The specific locational requirements of the proposal are met by existing allocations in the development plan. This includes, but is not limited to, situations where:
- Existing businesses plan to expand or improve their premises, or clusters or networks of businesses need to grow (such as clusters of knowledge and data driven, creative or high technology industries and associated facilities and infrastructure); or
- The availability of infrastructure (such as electricity network infrastructure to provide adequate grid connections, or water and wastewater capacity) makes certain locations particularly important, including opportunities to co-locate large scale generators and users of power (such as data centres); or
- Proposals would meet a local, regional or national need for the provision of new, expanded or upgraded facilities that would result in more efficient, reliable or sustainable handling of goods (whether for their receipt, storage, processing, interchange or distribution).”
It’s less clear what “evidenced unmet need” amounts to for residential proposals. When you look in the housing chapter for an equivalent policy to the employment chapter’s policy E2.2, policy HO7 is less specific:
“In applying the policies in this Framework, substantial weight should be given to the benefits of providing homes which will contribute towards meeting the evidenced accommodation needs of the community, as identified through needs assessments prepared for the area of the local planning authority and other relevant evidence. This includes, but is not limited to, homes needed for different groups assessed under policy HO1.”
Are any “evidenced accommodation needs” that fall within policy HO7 an “evidenced unmet need” for the purposes of category j? Unlike with policy E2.2 there isn’t an express cross-reference to policy S5.
The wording of category j itself could put it beyond doubt but hasn’t:
“(including, but not limited to, development proposals involving the provision of housing where the local planning authority cannot demonstrate a five year supply of deliverable housing sites or scores below 75% in the most recent Housing Delivery Test)”
Does this phrase mean:
- “including development proposals involving the provision of housing and in the case of those involving the provision of housing including where the local planning authority cannot demonstrate…” (in which case other unmet accommodation needs might be evidenced, such as for affordable housing in the area?); or
- “including development proposals involving the provision of housing and in the case of those involving the provision of housing unmet need means where the local planning authority cannot demonstrate…”?
I’ll call these the wider interpretation and the narrow interpretation respectively.
Linguistically, I’m genuinely unsure which is right. In fact I’m getting nervous flashbacks to the litigation over the interpretation of paragraph 49 in the 2012 NPPF: for the purposes of the operation of the “tilted balance”, what did “Relevant policies for the provision of housing” mean? The uncertainty could have been resolved at an earlier stage by a tweak to the NPPF itself but instead it took the Supreme Court in Suffolk Coastal five years later to resolve, in part at least, what seven simple words meant.
If the words in category j itself are not clear, what pointers are there elsewhere in the document?
Well, one of the criteria for development on grey belt land not being “inappropriate development” is that “there is an evidenced unmet need for the type of development proposed.” . A footnote explains that for housing development this means “lack of a five year supply of deliverable housing sites, including the relevant buffer where applicable, or where the Housing Delivery Test result was below 75% of the housing requirement over the previous three years; and in the case of traveller sites means the relevant local planning authority cannot demonstrate a five year supply of deliverable traveller sites.”
So, for grey belt development to fit within category j, undoubtedly the narrow interpretation applies. But this doesn’t help with non grey belt development because it might be said that the document is deliberately setting a stiffer test for green belt development than for non green belt development. Aaagh!
Perhaps there is another clue in paragraph 3 of Annex A:
“Where a local planning authority can demonstrate a five year supply of deliverable housing sites (with the appropriate buffer) and where the Housing Delivery Test indicates that the delivery of housing is more than 75% of the housing requirement over the previous three years, for the purposes of policy S5(1)(j), if the most up-to-date local housing need figure (calculated using the standard method set out in Annex D) is greater than the housing requirement set out in adopted development plan policies, this should not be considered as evidence of unmet need, for a period of five years from the date of the plan’s adoption.”
This is a particularly contorted sentence but it seems to be saying that if housing need calculated under the standard method set out in the new NPPF is more than the housing requirement set out in the local plan, for five years from adoption of the plan it cannot be used as evidence of unmet need. Does it exclude unmet need being shown in other ways, e.g. by way of an unmet need for affordable housing?
An inspector, Hollie Nicholls, has already grappled with the S5.1 j narrow interpretation vs wider interpretation question in a decision letter dated 14 September 2026 in relation to a proposal by Nicholas King New Homes Limited in Kingston Bagpuize with Southmoor (within Vale of White Horse District). The Council could only just show a five year housing land supply. There was no failure of the housing delivery test. In terms of affordable housing need, “the appellant’s evidence indicates that as of the 31 March 2025, there were 2,904 households on the Council’s Housing Register”. The inspector found that there was an evidenced unmet need:
“The wording in Policy S5(1)(j) referring to evidence of an unmet need specifically uses the words ‘including, but not limited to’, indicating that the absence of a five year deliverable supply and HDT outcomes are not the only means by which an unmet need can be proven to exist. These are key indicators, but the list is not exhaustive.”
“In this case, the very marginal five year housing land supply position and the evidenced significant unmet need for affordable housing combine together to indicate that the scheme complies with 2026 Framework Policy S5(1)(j).”
So the inspector here relied on the wider interpretation of S5.1 j.
What might be the government’s position? Lord Jamieson asked this question this week in the House of Lords:
“under the new National Planning Policy Framework, where an authority has a five-year supply and scores above 75 per cent in its most recent Housing Delivery Test, under what conditions a need for affordable housing would permit a development outside the local plan and settlement envelope; and what the percentage of affordable housing would need to be for such a development to be considered?”
Baroness Taylor responded on 15 September 2026 on behalf of the government:
“The new National Planning Policy Framework (NPPF), published in August 2026, introduces a revised presumption in favour of sustainable development which, in combination with new policies on development inside and outside of development boundaries, promotes a sustainable pattern of development. It does this by steering proposals to appropriate locations: maximising the use of suitable land within urban areas and taking a more selective approach to the types and locations of development outside settlements.
The Housing Delivery Test (HDT) and five-year housing land supply (5YHLS) policies are important mechanisms within the planning system to ensure homes are delivered in line with needs. Where an authority can demonstrate a 5YHLS and has achieved a HDT result of at least 75%, the presumption in favour of sustainable development would not be engaged through those policies.
While failing against either HDT or 5YHLS is a strong indicator of housing need in an area not being sufficiently met, it does not mean that planning permission for housing will be automatically granted, and local planning authorities must consider a range of factors when determining planning applications.
The NPPF also sets out that substantial weight should be given to the benefits of providing accommodation that will contribute towards meeting the evidenced needs of the local community, including those who require social and affordable housing.”
I have emboldened the key passage. It seems that the government’s stance is that in fact the narrow interpretation applies, which would imply that that decision letter to be in error (although this interpretation question would ultimately be for the courts).
I think we need some clarity, fast! If affordable housing need may in some circumstances be sufficient to trigger the S5 presumption in non green belt cases surely we need to know what is sufficient by way of evidence (Ashley Bowes raised some interesting questions on that in his LinkedIn post this week) and indeed (as Lord Jamieson raised in his question) what percentage of housing in a development would need to be affordable in order for it to count.
I’m thinking back to that sardonic aside by Lord Carnwath in his judgment in Suffolk Coastal, in relation to the 2012 NPPF:
“One purpose, in the words of the foreword, was to “(replace) over a thousand pages of national policy with around 50, written simply and clearly”, thus “allowing people and communities back into planning”.”
Can we at least agree, in relation to S5.1 j, that this crucial policy could easily be made both simpler and clearer?
Simon Ricketts, 20 September 2026
Personal views, et cetera








