The NPPF Has Been Rewritten. Here's What Changes for Small Landowners, Homeowners and Businesses

Two weeks on from the publication of the new National Planning Policy Framework on 17 August, the initial flurry of hot takes has died down and I've had the chance to sit with the document properly. Having now read it against the cases I'm actually working on, my view is that this is the most significant rewrite since the Framework was first introduced in 2012.

The 243 paragraphs of the December 2024 version have gone. In their place are 131 coded policies, six annexes and, most importantly, a completely different route to a planning decision.

Most of the commentary has focused on the big strategic stuff: 25-year spatial development strategies, Green Belt reform, housing numbers. That's understandable, but isn't relevant for most of my clients. The people I work with own a plots of land, redundant buildings, agricultural holdings or business premises. For them, the changes that matter are the ones that affect small sites, and on the whole I think the news is good.

Here's my take on what has actually changed and what it means in practice.

The changes I think matter most

Plan-making and decision-making are now separate. The Framework draws a clear line between the policies councils use to write local plans and the ones they use to decide applications. Plan-making policies can no longer be quoted back at you as a reason for refusal. This sounds like housekeeping but it closes off an argument I've seen used against small schemes far too often.
The "tilted balance" has gone. The old paragraph 11 test has been replaced by a location-based route through policies S3, S4 and S5. Where your site sits relative to a settlement boundary now decides how your application is assessed.
Old local plan policies carry less weight. Under Annex A, a local policy that is materially inconsistent with national decision-making policy should be given very limited weight, unless the plan was adopted against the new Framework. For clients who have been blocked by a restrictive policy written a decade ago, this is a real shift.
Small sites get a guaranteed share of local plan allocations. Councils must now allocate at least 10% of their housing requirement on sites no larger than one hectare, plus a further 10% on sites between one and 2.5 hectares.
Extra homes within existing settlements are actively supported. New policy L2 gives substantial weight to additional homes and floorspace inside settlements, including in residential gardens, on rooftops and in gaps in the roofline.
Development outside settlements is no longer a blanket "no". For the first time, national policy lists the types of development that should be approved in the countryside, including redevelopment of previously developed land and limited infilling.

Inside a settlement: approve unless the harm substantially outweighs the benefits

The first question I now ask about any site is whether it is inside or outside a settlement. Everything flows from that.

If it is inside, policy S4 applies. Development should be approved unless the benefits would be substantially outweighed by adverse effects when assessed against the national decision-making policies. That is a positive starting point, and crucially it applies regardless of whether the council has an up-to-date local plan or a five-year housing land supply.

"Settlement" now has a national definition. It covers cities, towns, villages and other predominantly built-up areas, together with land that has been allocated or permitted and will form part of the built-up area. Most hamlets and scattered groups of houses are excluded unless the local plan identifies them as settlements, and some Green Belt villages are excluded too. I expect this definition to be argued over a great deal in the coming months, because for a lot of edge-of-village sites it will decide the whole case.

Garden plots, infill and rooftop development

Policy L2 is the one I'd tell every homeowner and small landowner to read. It gives substantial weight to:

additional homes or floorspace within settlements
better use of vacant or underused land and buildings
remediation of contaminated land
temporary use of previously developed land

It expressly supports airspace development, mansard roofs, filling gaps in a roofline, taller corner buildings and additional units within residential curtilages.

For building in a residential garden or curtilage, the national starting point is that the new development should:

occupy no more than twice the footprint of all the buildings that existed on the site on 17 August 2026
retain at least 50% of the non-developed area within the curtilage

There is an exception where more can be accommodated without harming the overall character of the area, taking account of infrastructure and how sustainable the location is.

Two cautions I'd give clients. First, gardens are still not classed as previously developed land. L2 is a separate positive route, not a reclassification. Second, the baseline date matters: what was on the site on 17 August 2026 sets the reference point for the footprint test, so it's worth recording the position now.

Density expectations

Policy L3 expects residential and mixed-use schemes within settlements to increase the density of the surrounding area unless there is a clear reason why that is inappropriate or impossible. Near a well-connected railway station, the minimum is generally 35 dwellings per hectare, rising to 45 where services run at least twice the minimum frequency. The previous 40/50 figures have been reduced and smaller sites have exemptions, so a two or three-unit scheme is unlikely to be caught by the station density floor. Even so, a proposal that makes obviously inefficient use of a plot is now easier for an officer to criticise, and I'd design with that in mind.

Outside a settlement: a list of what should be approved

This is the change I'm most pleased about. Under the previous Framework, land outside a settlement boundary usually met a wall of restrictive local policy, and many of my clients gave up before they started. Policy S5 changes that by naming the types of development that should be approved in the countryside, subject to the same "substantially outweighed" balance as S4.

The list is directly relevant to small sites:

Redevelopment of previously developed land. A former yard, depot, workshop or other brownfield plot outside the settlement now has national policy support.
Limited infilling within groups of houses. A gap between existing dwellings in a cluster that doesn't qualify as a settlement is now a recognised category.
Extensions, alterations and replacement of lawful permanent buildings. An extension must not result in a disproportionate increase in size compared with the building as it stood on 17 August 2026. A replacement must be for the same use and not disproportionately larger.
Agriculture and rural businesses where the location is necessary.
Exception sites for affordable and community-led housing.
Development near a well-connected station that is physically well related to a settlement.
Land allocated in the development plan.
Development that meets an evidenced unmet need, including where the council cannot demonstrate a five-year housing land supply or scored below 75% in the latest Housing Delivery Test.

That last point is the successor to the old tilted balance. A council's housing shortfall no longer makes its policies "out of date". Instead, it provides evidence of unmet need that unlocks a category on the S5 list. In practice I think this will do a similar job, but the argument has to be made differently.

Anything outside the listed categories needs exceptional circumstances, and the benefits must substantially outweigh the harm, including harm to the character of the countryside.

One boundary to be clear about: S5 does not apply in the Green Belt or to Local Green Space. Those have their own policies, which I cover below.

What my business clients should know

The commercial side of the Framework has been strengthened rather than just reorganised.

Policy E2 gives substantial weight to business investment, expansion and adaptation, and to farm modernisation that supports food production, animal welfare or the environment. If you need to extend premises or change how a site operates, that weight now sits on your side of the balance.
Policy E4 spells out support for rural businesses, with examples including farm shops, greenhouses, polytunnels, reservoirs, livestock buildings and ancillary seasonal worker accommodation.
Pubs are protected. The Framework now includes specific protection against public houses being redeveloped for housing or other uses. If you own a pub and were relying on a residential conversion as an exit route, that has become harder, and I'd want to talk through the options early.
Validation requirements are standardised. Policies DM2 and Annex C create a national information framework. Councils can only ask for additional local reports where a development plan policy specifically calls for them, and the request must be proportionate. For a small applicant this should mean fewer surprise demands for expensive supporting assessments, which has been one of the biggest frustrations I hear about.
Viability arguments are narrower. Under DM5, the price you paid for the land is expressly not a reason for failing to comply with policy. Viability assessments are only justified where circumstances have materially changed since the local plan was tested.

Green Belt sites

Green Belt policy has been restructured as GB1 to GB8, and the core test is unchanged: inappropriate development is harmful by definition and needs very special circumstances.

However, the grey belt definition has widened. Land is no longer excluded from being grey belt just because a heritage, habitat, flood or landscape policy applies to it. Classification and acceptability are now separate questions, so a site that previously fell at the first hurdle may now get past the definition and into a proper assessment.

There is also a new station-led route under GB7 for residential or mixed-use development within reasonable walking distance of a well-connected station. This route does not require evidenced unmet housing need, though major schemes must still meet the Golden Rules.

For homeowners extending or replacing a building in the Green Belt, note that GB7 measures extensions against the original building, whereas S5 measures them against the building as it stood on 17 August 2026. The wrong baseline can change the answer, and I've already seen the two confused.

Renewable energy schemes are now expressly inappropriate development in the Green Belt and need very special circumstances, which closes a route some had been using to promote solar farms on grey belt land.

Other changes that catch small sites

Heritage. The phrase "less than substantial harm" no longer appears. Effects on heritage assets are now assessed as positive, none, harm, substantial harm or total loss, and any harm to a designated asset carries considerable importance and weight. If you're in a conservation area or near a listed building, don't assume the old approach still applies.

Biodiversity net gain. A local plan policy demanding a higher BNG percentage than the statutory 10% now receives no weight at decision stage unless it is tied to a specific site allocation. Small sites that are exempt from statutory BNG cannot be made to provide it through local policy. Swift bricks and similar integrated nest boxes are expected unless there is a compelling technical reason not to.

Retrospective applications. Policy DM8 brings intentional unauthorised development into national policy. Where a council concludes from the evidence that unauthorised development was deliberate, that should be given substantial weight against granting retrospective permission. Building first and applying later has always been a gamble. It is now a much worse one.

Article 4 directions and HMOs. DM10 replaces the previous test. A direction must be necessary to protect local amenity or wellbeing, evidence-based and limited to the smallest area needed. Over-concentration of small HMOs is expressly cited as a valid reason.

Flood risk. The sequential test area of search should be no larger than the anticipated catchment of the development. For a single dwelling that is a much smaller area than the whole district, which makes the test easier to pass on a genuinely local site.

When does this apply?

For planning decisions, immediately. The national decision-making policies became a material consideration on 17 August 2026. An application submitted before that date but decided afterwards will normally be assessed against the new Framework.

For plan-making it is more complicated. Some emerging local plans and already-submitted neighbourhood plans continue under the December 2024 version. It is entirely possible for a live application to be decided under the 2026 policies while the emerging local plan is examined against the 2024 ones.

The development plan remains the statutory starting point under section 38(6), and the NPPF is still a material consideration rather than law. But with Annex A giving very limited weight to local policies that conflict with national decision-making policy, the practical balance has shifted noticeably towards the Framework.

My advice: look again

If you own a small site that was refused, or that you decided not to pursue, under the old Framework, it is worth a second look. The questions I'm working through with clients are:

Is the site inside or outside a settlement under the new national definition?
If inside, does L2 give substantial weight to the additional homes or floorspace?
If outside, does the proposal fit one of the S5 categories: brownfield, infill, extension, rural business or unmet need?
Is the local policy that blocked it materially inconsistent with the new national decision-making policies?
Is the site in the Green Belt, and if so, does the widened grey belt definition or the station-led route apply?

An old planning statement cannot simply be updated by swapping paragraph numbers. The route to a decision has changed, and so has the language of weight and harm. My strong advice is to get the site appraised against the new policies before spending money on drawings.

This article is a general summary of national planning policy in England and is not professional advice. The exact policy wording and your local development plan should be checked for any specific proposal.