DM21 — Enhancement of Biodiversity and Access to Nature.
How Harrow actually applies DM21: who leans on it, where it bites hardest, and how often it's invoked. The policy text is the rule; this is the behaviour.
DM21 is a published Harrow planning policy. This page records where it appears in the council's published planning decisions.
Cited under: Harrow Local Plan (adopted)
Policy DM21 requires development proposals to enhance locally important habitats and support species, restoring and recreating natural environments. This applies to all development proposals in Harrow. The council will seek opportunities for green corridors, green chains, gardens with wildlife planting, green roofs, and green walls.
Plain-English summary of the adopted policy text below. The full text is the rule; this is the gist.
Enhancement of Biodiversity and Access to Nature
Verbatim from the adopted Harrow plan · source document. The council's published plan is the authoritative version.
30 citations in the selected period
Not filled in yet. This will hold how officers actually argue DM21 case by case, classified from their decision reports — the classification pass hasn't run. Nothing is paraphrased in its place.
DM21 appears most often in Stanmore, Roxeth, Canons. It appears across 14 of 39 officers recorded in this period. The map shows the pattern for the selected period.
This shows the decision reports in which DM21 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 DM21 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 DM21. Dismissed = the council's refusal stood, the policy held; allowed = overturned. Too few decisive appeals for a rate — the counts are the record. The tighter join — this borough's own refusals citing DM21 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.