Planning
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Free Croydon planning permission check

Check whether your Croydon project needs planning permission in 90 seconds. Free, no signup, verified against the London Borough of Croydon's 21 designated conservation areas, 168 listed buildings and the council's published Article 4 directions. Extensions, loft conversions, basements, new builds, change of use, outbuildings and prior approvals all covered.

WarningThis tool gives general guidance based on public planning data. It is not legal advice. Always verify with your local planning authority before starting work.

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21
Conservation areas
168
Listed buildings
75%
Overall approval rate
9 wks
Typical decision time

Approval rate is the overall planning approval rate for all applications decided by the council, YE Dec 2025, per MHCLG Live Table P124.

Planning in Croydon

Croydon is a London planning authority handling the full range of residential projects: rear and side extensions, loft conversions, basement extensions, outbuildings, prior approval applications, new build infill and change of use. Croydon has 21 designated conservation areas and 168 listed buildings listed buildings, plus multiple Article 4 directions in force that remove permitted development rights in specific streets. Croydon's Local Plan (2018, with a partial review submitted November 2024) focuses residential intensification on the metropolitan centre while protecting the suburban character of Purley, Coulsdon and Shirley. The council's overall planning approval rate was 75% for year ending December 2025 per MHCLG Live Table P124, reported by the London Borough of Croydon. If your property sits inside a conservation area, behind an Article 4 direction or on a listed building, assume you will need full planning permission rather than permitted development.

Why Croydon refuses planning applications

The commonest reasons London Borough of Croydon officers give when refusing householder planning applications - across extensions, loft conversions, basements, outbuildings and other residential projects - based on published committee reports:

  1. Harm to the character or appearance of a conservation area
  2. Overlooking and loss of privacy to neighbouring windows
  3. Bulk, scale or massing out of character with the terrace
  4. Loss of private amenity space below the 50% retention threshold
  5. Conflict with the council's adopted design or heritage policy

Croydon council resources

Authoritative Croydon planning sources you can cross-check:

Further reading
Read the full Croydon extension guide →

Cost benchmarks, planning timelines and design recommendations specific to Croydon homeowners.

Last reviewed by Jonathan Blewitt (founder, Mayfair Studio) on 11 April 2026. Approval rate sourced from MHCLG quarterly live tables (YE Dec 2025). Conservation area, Article 4 and listed building counts cross-referenced against planning.data.gov.uk. This page is reviewed quarterly.