BLOGS

A rules-based planning system arrives

Twelve months of consultation ended on 17 August 2026, when the Ministry of Housing, Communities and Local Government published the finalised NPPF alongside its response to the December 2025 consultation, updated Housing Delivery Test results, and a new statutory consultee framework. This is the most structurally significant rewrite of national planning policy since the NPPF was first introduced in 2012, and it lands at a moment when the sector is still absorbing the December 2024 reforms that reintroduced mandatory housing targets and the "grey belt" designation.

The headline change for institutional players is the shift from a discretionary, narrative-based framework to a rules-based one. Local plan policies that conflict with new National Decision-Making Policies must now be given "very limited weight" unless they have been examined and adopted against the revised framework. For developers navigating authorities with outdated local plans, this materially reduces the scope for local pushback on schemes that meet national criteria.

Default yes near stations: where the opportunity concentrates

The most consequential single policy for site sourcing is the presumption in favour of housing within reasonable walking distance — broadly 800 metres — of well-connected train and tram stations, including in some Green Belt locations where "golden rules" on affordable housing and infrastructure are met. Minimum density expectations of around 40–50 dwellings per hectare apply to eligible sites, a marked increase on typical suburban densities in many local plans.

REalyse planning data shows the scale of the gap this policy is designed to close: across 296 English local authorities, planning approval rates for residential schemes over the past two years averaged roughly 70%, but decision timescales ranged from under two months in the fastest-moving authorities to over seven months in others, with a median of around 114 days. Areas such as Cornwall, Solihull and North Yorkshire cleared applications with approval rates above 78%, while dense urban authorities including Barnet and Birmingham sat below 51%, despite proposing thousands of units. A default presumption near stations is squarely aimed at authorities in this lower tier, where well-connected, transit-adjacent land has historically faced the most friction.

For investors and lenders underwriting sites near stations, this points to two effects worth tracking through comparables and pipeline data: faster time-to-decision compressing holding costs on land, and higher achievable density supporting stronger gross development value assumptions — provided viability and affordable housing obligations under the Green Belt "golden rules" are priced in from the outset.

Mayoral call-in and the shift away from councils

Alongside the NPPF rewrite, government has signalled it will formalise the use of Spatial Development Strategies across Mayoral Combined Authorities and the Mayor of London, and has strongly encouraged wider use of Local and Mayoral Development Orders. Combined with ministerial powers to intervene on large-scale refusals, the practical effect is to shift more decision-making leverage on major schemes away from individual borough or district planning committees and towards regional and national actors.

This has direct implications for how development risk should be assessed. Schemes that stall at committee level in a single authority may now have a credible route to approval via mayoral or ministerial call-in, particularly where they align with national priorities on density, transport connectivity and housing delivery. For credit and risk teams, this argues for treating local-authority refusal risk as a less binary variable than it has been historically — a scheme's proximity to a Spatial Development Strategy area or a well-connected station may now matter more than the specific committee that first reviews it.

What this means for underwriting and site selection

For institutional investors and developers, three practical adjustments follow from the reform package:

• Reweight site-sourcing criteria toward station connectivity. Land within the 800-metre threshold of stations meeting the "well-connected" test — broadly, higher-frequency services in larger travel-to-work areas — should be assessed with an uplift to planning probability and density assumptions relative to comparable non-station sites.

• Track authority-level planning performance as a live input, not a static assumption. With approval rates and decision timelines still varying by a factor of three to four across English councils, REalyse-style planning and pipeline data — approvals, unit volumes, and time-to-decision by local authority — remains essential for stress-testing scheme timetables, even as national policy narrows the room for local divergence.

• Revisit viability models for Green Belt and grey belt station sites. The 50% affordable housing and infrastructure conditions attached to Green Belt release change the economics materially; GDV and rental yield assumptions should be benchmarked against recent comparables in the same density band rather than extrapolated from lower-density historical schemes.

Outlook

The finalised NPPF and accompanying mayoral intervention powers mark a genuine acceleration point for transit-oriented development in England, but the policy is only as effective as the pipeline data used to act on it. Historic 2024 reforms already showed applications and approvals rising faster than completions — REalyse data on that cycle showed application volumes roughly six times higher in the months after reform than before it, with approval rates near 70%, yet new-build completions lagging behind. The 2026 changes raise the stakes further: sites near stations and in Spatial Development Strategy areas are likely to see faster consent, but converting that consent into delivered, income-producing stock will remain the metric that separates well-underwritten schemes from paper pipeline. Investors, lenders and developers who pair the new policy tailwinds with granular, authority-by-authority planning and comparables data will be best placed to capture the opportunity as the framework beds in through 2026 and 2027.