NPPF 2026: What the August Framework Means for Your Next Project

The revised National Planning Policy Framework was published on 17 August 2026, after consultation on a December 2025 draft, and replaces the December 2024 edition. Under Annex A(1), its policies became material considerations in decision-making from the day of publication. Whether you are a developer, an architect, a landowner, or an investor, it changes how, where, and when you can build. This is not a minor policy tweak. It is a structural reset: policies are now addressed by code, such as S5(1)(j), rather than by paragraph number.

The December 2024 edition introduced grey belt, and the August 2026 Framework carries it forward. It also separates plan-making policies from national decision-making policies, applies the presumption in favour of sustainable development by location, sets a 30-month window for preparing and adopting a local plan, reorganises Green Belt policy, and puts the standard method, the five-year supply buffers, and the Housing Delivery Test consequences in Annex D, which is national policy in its own right. The brownfield passport, floated in a September 2024 government working paper, is not there by name, though S4 carries its first strand within settlements.

Annex D sets out the standard method for local housing need: a baseline of 0.8% of existing housing stock, raised by 0.95% for each 1% that the five-year average affordability ratio sits above five. Five-year supply is measured against the plan's housing requirement, or against local housing need once that requirement is more than five years old, with a buffer of 5% or, in the cases Annex D(9) sets out, 20%. What a shortfall does has changed, because the December 2024 tilted balance has no direct successor. S3 routes the presumption by location: S4 within settlements, S5 outside them. A shortfall counts at S5(1)(j), the evidenced unmet-need route, which covers 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", provided the site is physically well-related to an existing settlement and of a scale that existing or proposed infrastructure can accommodate. In the Green Belt, which S5(5) takes outside S5, footnote 41 treats a five-year supply shortfall, including any relevant buffer, or a Housing Delivery Test result below 75%, as the evidenced unmet need required by GB7(1)(g)(ii), one of the four conditions that must all apply before grey belt development is not inappropriate under GB7(1)(g). The question for developers is no longer only whether there is a five-year supply, but which route your site takes and whether it meets that route's own tests.

The brownfield passport does not appear in the August 2026 Framework: neither the term nor a qualifying route with its own faster determination timetable. Its first strand survives in substance. The December 2024 edition added approval for suitable brownfield land within settlements, the December 2025 consultation presented its proposed S4 as refining that so development is supported in principle within settlements as a whole, and S4(1) now provides that development proposals within settlements, brownfield or not, "should be approved unless the benefits of doing so would be substantially outweighed by any adverse effects". Previously developed land, which the glossary also calls brownfield land, otherwise goes through the ordinary policies. Outside settlements, its redevelopment, including a change of use to residential, is a listed category at S5(1)(d), and in the Green Belt it is not inappropriate under GB7(1)(e) where it "would not cause substantial harm to the openness of the Green Belt". L2(1) gives "substantial weight" to remediating despoiled, degraded, derelict, contaminated, or unstable land, and to making better use of vacant and underutilised land and buildings. For urban developers and housing associations focused on regeneration sites, that is real weight, but not a separate consent: flood risk and heritage are still decided under their own policies, and a refusal direction in either counts through S4(2)(c) inside settlements and S5(2) outside them.

The August 2026 Framework does not use the term National Development Management Policies. It splits its policies instead: chapters 2 and 3 hold the procedural plan-making and decision-making policies, each thematic chapter divides the same way, and the plan-making policies are kept out of decisions. On status, the introduction is plain: "The national decision-making policies in this Framework are a material consideration in making these decisions and should be read alongside the policies in the development plan." The development plan remains the statutory starting point, and nothing in the text gives the national policies statutory weight or precedence over it. What bites is Annex A(2): development plan policies, or parts of them, "which are materially inconsistent with national decision-making policies in this Framework should be given very limited weight", unless examined and adopted or made against this Framework. That still sets a national baseline, on matters such as densities near well-connected stations (L3(2)(c)) and upward extensions (L2(1)(d)), and narrows the variation you navigate across authorities, though each plan still needs reading clause by clause.

PM2(2) makes the timetable policy: "Local plans should be prepared and adopted within 30 months of publishing a Gateway 1 self-assessment". PM2(3) requires the next plan to be commenced no later than five years after adoption, sooner where an Inspector recommends it or local circumstances change significantly. The clock runs from Gateway 1, not from the Framework's publication, and the text does not deem an overrunning plan out of date or trigger the presumption. Its stated consequence is at PM2(4): "The Secretary of State has powers to intervene in plans, including when a local planning authority fails to make adequate progress with plan-making." A slow plan matters to developers through supply, because five-year supply is measured against local housing need once the plan's requirement is more than five years old (Annex D(8)). Local plans, minerals and waste plans, and supplementary plans prepared under Part 2 of the Planning and Compulsory Purchase Act 2004, as amended by the Levelling-up and Regeneration Act 2023, and the Town and Country Planning (Local Planning) (England) Regulations 2026 follow the August Framework (Annex A(4)), as do spatial development strategies and neighbourhood plans not submitted on or before 17 August 2026 (Annex A(5) and A(6)); other plans stay with the December 2024 edition and any of its transitional arrangements that apply (Annex A(6) and A(8)). Track each authority's Gateway 1 date and timetable: they tell you when allocations will be set and when a site can still be promoted.

Green Belt policy has been reorganised. Boundaries change only through local plans, where exceptional circumstances are "fully evidenced and justified" (GB3(1)), including an authority being unable to meet its need after examining previously developed land, optimised densities, and sites outside the Green Belt (GB3(2)). GB3(4) lifts that test for suitable land around well-connected stations identified in the plan's spatial strategy. Plans should identify grey belt through an Annex E assessment (GB2(3)) and, when altering boundaries, give priority to releasing previously developed land in the Green Belt, then grey belt that is not previously developed, then other Green Belt locations, so long as this promotes a sustainable pattern of development overall (GB4(1)(d)(i)). Inappropriate development still needs very special circumstances under GB6(2), and major housing development on Green Belt land should meet the Golden Rules in GB8. For landowners with Green Belt sites, the message is clear: get your site assessed now, because the local plan's Green Belt assessment will shape whether your land is identified as grey belt and released.

PM12 puts viability at the plan stage: contributions, with affordable housing "expressed as a single figure rather than a range", should be set so that planned sites stay deliverable, "reducing the need for viability assessment at the decision-making stage". In decisions, DM5(1) says proposals that accord with relevant up-to-date plan policies and national decision-making policies "should be assumed to be viable". DM5(2) lists circumstances that may justify a site-specific assessment: a scheme or site materially different from what the plan's viability evidence tested, costs that evidence did not take into account and that demonstrably burden the development, or site or economic circumstances that have changed significantly, which for the economy footnote 22 explains as "a recession or similar significant economic change". Neither the price paid for land nor the price intended under an option agreement justifies falling short of plan policy (DM5(3)), and GB8(3) allows a viability case against the Golden Rules in three named circumstances only. Where a scheme would bring significant numbers of additional people to an area, HC3(1)(b) expects it to provide for the community facilities and public service infrastructure needed to make it acceptable, by direct provision or a contribution "which may be through Community Infrastructure Levy payments, where applicable"; the Framework does not replace that levy. On top sit statutory biodiversity net gain, the nature restoration levy where a scheme affecting a habitats site or a Site of Special Scientific Interest relies on a made Environmental Delivery Plan and a commitment to pay that levy to meet N6(1)(a)(ii) or N6(1)(b)(iii), the Building Safety Levy on building control applications from 1 October 2026, and Section 106 obligations. Viability assessment is no longer a nice-to-have: it is essential due diligence on every scheme, because the plan sets the contributions and the land price will not excuse missing them.

What does all this mean in practice? For developers, check every pipeline site against the Framework now in force: whether S4 or S5 applies, the authority's five-year supply and latest Housing Delivery Test result, whether a brownfield site can claim the weight L2(1) gives, where the authority is in its plan timetable, and the full cost stack. For architects and planning consultants, every decision since 17 August 2026 has had to take the August 2026 Framework into account, so planning statements should cite its policy codes, not December 2024 paragraph numbers. Understanding the Framework properly means you can advise clients proactively rather than reactively.

For landowners, the message is equally clear. If you own land that could benefit from the August 2026 Framework, whether as previously developed land, as potential grey belt, or in an authority that cannot demonstrate a five-year supply, now is the time to get a professional assessment of your site's development potential. As authorities publish their Gateway 1 self-assessments and begin their 30-month plan-making cycles, the opportunity to position your site ahead of the process will narrow quickly.

Our Pre-Application Advice report is designed to position your project ahead of the policy curve. It analyses your site against the current and emerging policy framework, identifies the key planning considerations, models the likely officer response, and provides a structured basis for engaging with the local planning authority before you submit. If you are planning a project that will be determined under the August 2026 NPPF, this is the report that ensures you are not caught off guard, included within our Pre-Application Pack (from £2,250).