The Planning and Infrastructure Act 2025: What It Means for Your Next Scheme

The Planning and Infrastructure Act 2025 received Royal Assent on 18 December 2025, and its provisions are commencing on a rolling basis through 2026. It is not a single switch that flips overnight, and it does not rewrite the day-to-day rules for householder or minor applications. What it changes is the machinery around larger and more strategic development.

In practice, the Act does four main things. It changes how planning decisions are made, with mandatory training for those who take them and more decisions delegated to officers. It creates a new way to meet certain environmental obligations through the Nature Restoration Fund. It makes it easier for public bodies to assemble land for major schemes and adjusts the compensation regime. And it streamlines how Nationally Significant Infrastructure Projects are consented and how quickly decisions can be challenged.

For most developers and landowners, the Act does not change the first question on any site, which is still what the land can actually take. It changes the route you travel once you know that. This guide sets out each change, who it affects, and what to do about it before you commit capital.

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The most immediate change for everyday applications is to how decisions are taken rather than what is decided. The Act introduces mandatory training for councillors and others who take planning decisions. They must be trained before they can participate in a decision. The intention is to raise the consistency and quality of committee decision-making and to reduce decisions that are vulnerable to challenge because they misapplied policy.

The Act also provides for a national scheme of delegation. This sets out which decisions are delegated to planning officers and which go to a planning committee. The Government published statutory guidance on the national scheme of delegation on 1 June 2026, with the scheme taking effect from 31 October 2026 and a review planned by October 2028. Alongside this, the Act enables requirements on the size and composition of planning committees. Exact arrangements are commencing on a rolling basis, so the position for your authority should be checked against the current guidance.

For applicants, the practical effect is that more routine and policy-compliant decisions are likely to be determined by officers rather than committee, with committee time reserved for the cases that genuinely need it. That tends to reward applications that are evidenced, policy-aligned, and clean on their constraints, because there is less room to rescue a marginal scheme through committee debate. It reinforces a theme running through the wider 2025-2026 reforms: get the submission right first time. Our note on what planning officers look for covers how to build a submission that reads cleanly at officer level.

The Act establishes a Nature Restoration Fund, administered by Natural England through Environmental Delivery Plans. The principle is that, instead of carrying out all environmental mitigation on a site-by-site basis, a developer can discharge certain environmental obligations by paying into a strategic scheme that delivers conservation measures at a larger scale.

This matters most on sites where site-specific environmental compliance has historically been slow, expensive, or uncertain. Where an Environmental Delivery Plan covers the relevant area and obligation, paying into the Fund can give a developer more certainty and a faster route through than commissioning bespoke mitigation alone. Where no plan yet covers your area or obligation, the existing site-specific route continues to apply. The detail of which obligations, areas, and rates are in scope is set through the Environmental Delivery Plans, which are being prepared and adopted over time, so this is subject to commencement and guidance.

It is worth being precise about what the Fund does and does not cover. It is one mechanism among several, and it sits alongside separate requirements such as biodiversity net gain rather than replacing them. We set out how the Fund works, and how it interacts with other environmental obligations, in our guide to the Nature Restoration Fund for developers.

The Act makes compulsory purchase orders easier for public bodies to use when assembling land, and it changes the compensation regime. That includes powers to reduce the hope value element of compensation in defined circumstances. Hope value is, in broad terms, the uplift in land value attributable to the prospect of future development, over and above existing use value.

For landowners and land promoters, this is the change to watch most closely. Where a public body is assembling land for a qualifying scheme, the compensation position may differ from the open-market assumptions that have historically underpinned land valuations. The powers apply in defined circumstances rather than universally, and the precise scope and process are subject to commencement and guidance, so the position on any given site should be checked rather than assumed.

The practical takeaway is to understand the designation and policy context of your land early, particularly whether it sits within or adjacent to an area earmarked for strategic delivery, regeneration, or infrastructure. That context shapes both the opportunity and the risk. A clear read of designations and the policy position is the foundation for any conversation about value, and it is exactly what a desktop screen is built to deliver.

For Nationally Significant Infrastructure Projects, the Act streamlines the consenting regime. That includes changes to pre-application consultation with statutory consultees, landowners, local authorities, and communities, and provision for more regular updates to National Policy Statements so that the policy framework against which major infrastructure is judged stays current. The aim is to shorten the time it takes to consent major energy, transport, and water infrastructure.

The Act also narrows the routes for judicial review of certain planning and infrastructure decisions, reducing the number of attempts available to bring a challenge. For promoters of major schemes, that points toward greater certainty once a decision is made. For objectors and affected parties, it points toward a tighter window in which to act. Either way, it raises the premium on getting the evidence and process right at the front of a project, because the opportunity to unpick a decision later is more limited.

Most readers of this guide are not promoting nationally significant infrastructure. But the direction of travel matters, because the same logic flows down through the system: front-load the evidence, get the process right, and do not rely on later stages to fix earlier gaps.

It is easy to read a headline Act and assume everything has moved. Much of the day-to-day system is unchanged. The table below separates what the Act actually changes from what carries on as before.

Two themes run across the whole Act. First, decisions are being pushed toward officers and toward a more standardised national framework. Second, the system is being tuned so that the front end of a project carries more weight and the later stages carry less slack. Both reward applicants who arrive with the constraints understood and the evidence in order.

This sits within the wider reform programme alongside the December 2024 NPPF and the changes to developer contributions. If you want the picture on the policy framework itself, see our NPPF 2026 guide; for the move from CIL toward a value-based charge, see our Infrastructure Levy explainer.

The Act rewards preparation, and the preparation is the same whether your scheme is large or small. Three steps cover most situations.

For landowners and promoters, the timing point is straightforward. The provisions are commencing on a rolling basis, local authorities are working through the new delegation arrangements, and the policy framework around them is still settling. The exact dates and detail should be checked against current GOV.UK guidance, because they are moving. What does not move is the value of arriving at any negotiation, application, or instruction with the site already understood.

A desktop feasibility study reads the constraints, designations, and policy position so that your strategy and your consultant's advice both start from evidence rather than assumption. It is the groundwork that the Act makes more, not less, important.

The Act changes how decisions are made, how certain obligations can be met, how land for major schemes is assembled, and how quickly major infrastructure can be consented and challenged. It does not change the first question on any site, which is what it can take. A desktop Site Screening reads the constraints, designations, and policy position before you commit capital. It informs your strategy and your consultant's advice; it does not replace them. Order a Site Screening, see a sample report, or read our grey belt guide if your land sits in the Green Belt.