Planning decisions in Merton
As of 15 Jan 2026, covering the last 5 years.
On the public planning record, Merton approved 85% of 9,786 decided applications in the last 5 years. Here is the approval rate for the most common home-project types. It is useful before you apply and free for local reporters to cite with attribution to MyTrustedTraders.
Approval rate by project type
- Extension : 85% approved (3,003 decided, ~56 days)
- Rear extension : 84% approved (1,916 decided, ~56 days)
- Loft conversion : 85% approved (872 decided, ~56 days)
- Roof / fenestration : 91% approved (812 decided, ~56 days)
- Demolition : 85% approved (508 decided, ~80 days)
- Side extension : 83% approved (465 decided, ~70 days)
- Tree work : 98% approved (269 decided, ~42 days)
- Two-storey extension : 74% approved (245 decided, ~77 days)
- Change of use : 66% approved (197 decided, ~89 days)
- Outbuilding / garden room : 82% approved (195 decided, ~58 days)
- Boundary wall / fence / gates : 89% approved (168 decided, ~81 days)
- Porch : 78% approved (153 decided, ~63 days)
- Windows & doors : 92% approved (145 decided, ~64 days)
- New dwelling : 90% approved (127 decided, ~126 days)
- Balcony / roof terrace : 83% approved (112 decided, ~59 days)
- Basement : 90% approved (104 decided, ~95 days)
- Driveway / dropped kerb : 88% approved (92 decided, ~81 days)
- Solar / renewables : 86% approved (87 decided, ~65 days)
- Advertisement / signage : 92% approved (84 decided, ~91 days)
- Conservatory / orangery : 91% approved (77 decided, ~62 days)
- Shopfront / commercial : 78% approved (64 decided, ~81 days)
- Listed building / conservation : 98% approved (63 decided, ~87 days)
- Annexe : 86% approved (28 decided, ~76 days)
Method
Figures are aggregates over the public planning decisions we hold for Merton, matched to a project type from the application description. Overall approval is decided-weighted across project types, using each type's rate over the last 5 years where we hold enough decisions, otherwise its full record. Only types with at least five decided applications are shown. We publish aggregate counts only, with no application references or applicant names. Full method and limits.