Which NPPF policies mean an automatic refusal?
The short answer
Ten, for housing purposes: inefficient use of land, conflict with a design code without justification, severe transport or highway safety impact, an incompatible use in a flood zone, inability to be made safe from flooding, unmitigable biodiversity harm, major development in a Protected Landscape, harm to a habitats site or irreplaceable habitat, and substantial harm to a designated heritage asset. Everything else weighs in the balance instead.
Why the distinction matters
The policies governing the principle of development list circumstances in which the benefits are 'likely to be substantially outweighed', and they say expressly that the list is not exhaustive. That is balance language: it raises the bar without deciding the outcome.
Only where a policy's own text says proposals should be refused does the framework mandate an outcome. Confusing the two makes a viable site look hopeless.
Neighbourhood plan conflict is not a mandate
Conflicting with a recent neighbourhood plan that has already allocated sites for its housing requirement is described as making the benefits likely to be substantially outweighed. It is a serious obstacle and it is meant to be. But it is a balance factor, not an automatic refusal.
The density one catches people out
Development that does not make efficient use of land should be refused. That includes failing the minimum density near a well-connected station, and it applies wherever the site sits. It is the refusal trigger most often engaged by accident, because it is engaged by building too sparingly rather than by any constraint on the land.
Heritage Coast is a higher bar, not a mandate
Major development within an area defined as Heritage Coast should not be supported unless it is compatible with the special character of the area. Non-major development simply has to be consistent with that character. Neither is framed as a mandate to refuse.
See it work
This scenario is already set up in the policy test. Change any answer and watch what moves.
Open this scenarioRelated
Reflects the National Planning Policy Framework (2026), published 17 August 2026. This page last reviewed 21 August 2026. Read the framework.
