DM26 — Metropolitan Green Belt, Metropolitan Open Land and Local Green Spaces.
How Croydon actually applies DM26: who leans on it, where it bites hardest, and how often it's invoked. The policy text is the rule; this is the behaviour.
DM26 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)
Croydon · DM26
Where DM26 is quoted — by ward
Fewer ~0More citations ~4
Showingre-scopes the headline figures and the trend
9
times cited
in parsed decision notices
60%
appeal survival
3 dismissed · 2 allowed at appeal
6 of 67
officer reach
9% of officers recorded in this period
Selsdon And Addington Village
top hotspot ward
4 citations
What this policy is about
Policy DM26 protects Metropolitan Green Belt, Metropolitan Open Land, and Local Green Spaces in Croydon.
It restricts building extensions to 20% of original floor space or 100m2, unless for agricultural use, outdoor sport, or recreation.
The Council will resist disproportionate extensions and development on Local Green Spaces, except for specific uses that preserve openness.
Plain-English summary of the adopted policy text below. The full text is the rule; this is the gist.
The policy — as adopted
Metropolitan Green Belt, Metropolitan Open Land and Local Green Spaces
DM26.1 The Council will protect and safeguard the extent of the borough’s Metropolitan Green Belt and Metropolitan Open Land as designated on the Policies Map by applying the same level of protection afforded to Metropolitan Green Belt in national planning policy to Metropolitan Open Land in the borough.
DM26.2 Extensions to existing buildings in Metropolitan Green Belt and Metropolitan Open Land should not be more than 20% of their original floor space or volume, or 100m2 (whichever is the smaller) unless they are for agricultural use, forestry, or facilities for outdoor sport, outdoor recreation or cemeteries.
DM26.3 Extensions to existing buildings in Metropolitan Green Belt and Metropolitan Open Land that are less than 20% of the original floor space or volume, or less than 100m2 in extent (whichever is the smaller) and extensions for agricultural use, forestry, or facilities for outdoor sport, outdoor recreation or cemeteries may still be disproportionate. In considering whether they are disproportionate and also whether a new replacement dwelling is materially larger or, if any proposed structure harms the openness of Metropolitan Green Belt or Metropolitan Open Land the Council will have regard to:
a. Changes in the floor space and volume of buildings;
b. The floor space and volume of all previous extensions (since 1948), alterations and developments within the curtilage of the dwelling;
c. Use of basements and roof spaces as living areas;
d. Whether there is an increase in the spread of buildings across the site, in particular where visible from public vantage points;
a. In reasonably close proximity to the community it serves;
e. The size of the curtilage and character of the surrounding area; and
b. Demonstrably special to a local community and holds a particular local significance and;
f. Whether ancillary structures have an urbanising effect.
c. Local in character and is not an extensive tract of land.
Local Green Spaces
DM26.4 The Council will protect and safeguard the extent of the borough’s Local Green Spaces. Development on Local Green Spaces will be inappropriate except for:
a. The provision of facilities (in connection with the existing use of the Local Green Space or a change of use) for outdoor sport, outdoor recreation, cemeteries and burial grounds and allotments, as long as the facilities preserve the openness of the Local Green Space and do not undermine the reasons why the green space was designated as a Local Green Space;
b. The replacement of an existing building, provided the new building is not materially larger than the one it replaces;
c. The re-use of buildings provided that the buildings are of permanent and substantial construction or
d. The change of use of land for outdoor sport and recreation or allotments.
Croydon Local Plan 2024
A Place with a Sustainable Future: Green Grid
Croydon Local Plan 2024
Designations shown on the Policies Map
How the policy works
Each of the designations set by this policy are shown on the Policies Map. The designations are listed in Table 9.1A:
National planning policy
Metropolitan Green Belt
Table 9.1A Designations set by Policy DM26.4 shown on the Policies Map
9.9 Metropolitan Green Belt is a national designation which aims to check the unrestricted sprawl of London, prevent Croydon from merging with towns in neighbouring local authorities, safeguard Croydon’s countryside from encroachment, to preserve the setting and special character of Croydon, and to assist in its regeneration by encouraging the recycling of derelict and urban land.
9.12 Between them the National Planning Policy Framework and London Plan apply the same level of protection to the Metropolitan Open Land as is afforded to Metropolitan Green Belt.
No.
Important Green Space
Place
Addiscombe Railway Park
Addiscombe
Ashburton Park
Addiscombe
Biggin Wood
Norbury
Coulsdon Memorial Ground
Kenley and Old Coulsdon
Foxley Wood and Sherwood Oaks
Kenley and Old Coulsdon/
Purley
No.
Important Green Space
Place
The Lawns
Crystal Palace and Upper
Norwood
The Queen's Gardens
Croydon Opportunity Area
Westow Park
Crystal Palace and upper
Norwood
Wettern Tree Garden
Sanderstead
Whitehorse Road Recreation Ground
Broad Green and Selhurst
Woodcote Village Green
Purley
Metropolitan Open Land
9.10 Metropolitan Open Land is a London designation which aims to protect land that either contributes to the physical structure of London, includes open air facilities which serve either the whole or significant parts of London, contains features or landscapes (historic, recreational, biodiversity) of either national or metropolitan value, or forms part of a Green Chain or a link in the network of green infrastructure.
Grangewood Park
Thornton Heath
Haling Grove
South Croydon
Higher Drive Recreation Ground
Kenley and Old Coulsdon
Other open space
Millers Pond
Shirley
9.11 Paragraph deleted.
Park Hill Recreation Ground
Addiscombe
Purley Beeches
Sanderstead
Rotary Field Recreation Ground
Purley
Sanderstead Pond
Sanderstead
Sanderstead Recreation Ground
Sanderstead
Shirley Recreation Ground
Shirley
South Croydon Recreation Ground
South Croydon
South Norwood Recreation Ground
South Norwood and Woodside
Spring Park Road
Shirley
Stambourne Woodland Walk
Crystal Palace and Upper
Norwood
Temple Avenue Copse
Verbatim from the adopted Croydon plan · source document. The council's published plan is the authoritative version.
How it lands
0% in approvals · 100% in refusals 9 citations in the selected period
The approval/refusal split is subscriber intelligenceUnlock →
Not filled in yet. This will hold how officers actually argue DM26 case by case, classified from their decision reports — the classification pass hasn't run. Nothing is paraphrased in its place.
What the published record shows
DM26 appears most often in Selsdon And Addington Village, Coulsdon Town, Old Coulsdon. It appears across 6 of 67 officers recorded in this period. The map shows the pattern for the selected period.
Who cites it — case-officer spreadfrom parsed decision notices · click an officer
Who leans on this policy — and how often — is subscriber intelligenceSubscribe to unlock →
Why it is cited — and what follows
0%
in approvals
0 citations
100%
in refusals
9 citations
This shows the decision reports in which DM26 appears. It does not yet claim that the policy caused those outcomes.
Reason · role · consequence
Not filled in yet — the classification pass over the citing passages hasn't run. When it has, this shows why DM26 was used, whether it supported approval or refusal, and what changed as a result. No conclusion is shown until that classification has been checked.
Why this policy is cited, and what follows, is subscriber intelligenceSubscribe to unlock →
From Planning Inspectorate decision letters that cite DM26. Dismissed = the council's refusal stood, the policy held; allowed = overturned. The tighter join — this borough's own refusals citing DM26 traced to their specific appeals — is still to come.
Citations, officer spread, ward and application-type counts parsed from published Croydon decision notices (high-confidence parses, approvals and refusals), joined to the canonical application record. One citation = one decision citing the policy. See the policy overview for every policy cited.
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.