DM27 — Protecting and enhancing our biodiversity and Urban Greening.
How Croydon actually applies DM27: who leans on it, where it bites hardest, and how often it's invoked. The policy text is the rule; this is the behaviour.
DM27 is a published Croydon planning policy. This page records where it appears in the council's published planning decisions.
Cited under: Croydon Local Plan (adopted)
Development proposals must achieve a mandatory biodiversity net gain, maintain or establish semi-natural vegetation, and incorporate urban greening measures such as green roofs or walls. This applies to all development sites in the borough. The council will resist development proposals that do not meet these requirements.
Plain-English summary of the adopted policy text below. The full text is the rule; this is the gist.
Protecting and enhancing our biodiversity and Urban Greening
Verbatim from the adopted Croydon plan · source document. The council's published plan is the authoritative version.
62 citations in the selected period
Not filled in yet. This will hold how officers actually argue DM27 case by case, classified from their decision reports — the classification pass hasn't run. Nothing is paraphrased in its place.
DM27 appears most often in Purley And Woodcote, Kenley, Sanderstead. It appears across 24 of 67 officers recorded in this period. The map shows the pattern for the selected period.
This shows the decision reports in which DM27 appears. It does not yet claim that the policy caused those outcomes.
Not filled in yet — the classification pass over the citing passages hasn't run. When it has, this shows why DM27 was used, whether it supported approval or refusal, and what changed as a result. No conclusion is shown until that classification has been checked.
From Planning Inspectorate decision letters that cite DM27. Dismissed = the council's refusal stood, the policy held; allowed = overturned. The tighter join — this borough's own refusals citing DM27 traced to their specific appeals — is still to come.
Atlas intelligence summarises patterns and observations from published planning records. Past decisions do not indicate how any future application will be determined. Every application is assessed on its own merits, having regard to the proposal, site, evidence and policies applying at the time. This information is provided for general information only and is not planning, legal, financial or professional advice.