BLOGS

A planning system under strain

England's local plan system was built on a simple premise: councils set their own housing numbers, tested against local evidence, and developers build against a stable policy framework. That premise is under increasing pressure. A significant share of local planning authorities are working from local plans adopted more than five years ago, or with no adopted plan at all, meaning the National Planning Policy Framework's presumption in favour of sustainable development is doing more of the heavy lifting than policymakers intended.

For institutional investors, developers and lenders, this matters far beyond Whitehall process. Where a local plan is absent, stalled, or successfully challenged, the tilted balance under paragraph 11(d) of the NPPF applies, and speculative or "planning by appeal" development becomes materially more likely to succeed. Understanding which authorities sit in this position is now a core input into site selection, land value assumptions and delivery risk modelling.

Where the shortfalls are concentrated

Local plan coverage is uneven across England, and the gaps are not random. REalyse's planning application data shows that authorities without a five-year land supply, or with plans well past their intended review point, tend to cluster in specific patterns: outer London boroughs and parts of the South East with acute land constraints and high objection rates; mid-sized market towns where housing need has been revised upward under the standard method; and northern and Midlands authorities where plan-making has repeatedly stalled over green belt releases and infrastructure funding disputes.

Tracking planning application volumes, approval rates and decision timelines by local authority gives an early signal of where policy vacuums are opening up. Where granted applications increasingly comprise sites that would not conform to an up-to-date plan, allocation, or that rely heavily on appeal decisions, that is a reasonable proxy for land supply stress. Investors sourcing sites in these areas should expect longer determination periods, more committee-level uncertainty, and a higher probability that planning permission on a preferred site depends on the tilted balance rather than a settled allocation.

The legal challenge dimension

The past two to three years have seen a marked rise in legal challenges to local plans and to individual planning permissions, both by objector groups seeking to slow development and by developers or landowners seeking to unlock housing numbers that councils have suppressed. Judicial reviews of housing need assessments, green belt boundary reviews, and duty-to-cooperate failures have all featured prominently, with several high-profile plans withdrawn or sent back for further work after inspector intervention at examination.

This creates a two-sided risk profile. On one hand, a council under legal or inspector pressure to increase its housing requirement can see land values on promotable sites rise quickly, as sites move from "hope value" to a realistic prospect of allocation. On the other, a plan withdrawn or paused mid-examination can leave promoters in limbo for eighteen months or more, with holding costs accruing against land that was priced on the assumption of a faster route to consent. Lenders underwriting land-led development finance should treat plan status, and any live legal challenge, as a first-order due diligence item, not a footnote.

Implications for strategic land and site promotion

For strategic land teams, the practical response to this environment has three parts. First, prioritise authorities where housing need is demonstrably unmet against government-derived figures, since this is where the tilted balance offers the clearest route to consent regardless of local plan status. Second, build in delivery timeline sensitivity for any site dependent on plan adoption, given that examination delays of a year or more are now common rather than exceptional. Third, use granular local data, not just headline local authority housing targets, to identify where planning committees have historically diverged from officer recommendations, since member-level risk is often a better predictor of appeal exposure than policy text alone.

REalyse data on planning pipeline volumes, approval and refusal rates, and average time from submission to decision by local authority allows this risk to be quantified rather than assumed. Comparing pipeline unit numbers against local housing need, alongside recent transaction and asking-price evidence from sales and lettings comparables, helps investors sense-check whether a site's promotion strategy is aligned with genuine undersupply or is chasing a market that local infrastructure and planning capacity cannot yet absorb.

Outlook: a five-year window of policy flux

The next five years are likely to bring continued turnover in local plan status as the standard method, green belt policy, and grey belt definitions work through the system, alongside further legal challenges as objector groups and pro-development interests both test the boundaries of the revised framework. For developers and investors, the councils worth watching are not necessarily those with the largest headline housing targets, but those where plan-making has stalled, land supply is demonstrably short, and legal or inspector pressure is building. These are the markets where site promotion strategies, land value assumptions and delivery timelines are most likely to shift materially, and where data-led monitoring of planning pipeline and decision patterns offers the clearest edge.