Planning decisions in Cambridge
As of 1 Jul 2026, covering the last 5 years.
On the public planning record, Cambridge approved 96% of 1,289 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 : 95% approved (306 decided, ~56 days)
- Rear extension : 98% approved (203 decided, ~56 days)
- Tree work : 98% approved (162 decided, ~37 days)
- Roof / fenestration : 96% approved (134 decided, ~56 days)
- Loft conversion : 93% approved (107 decided, ~56 days)
- Demolition : 96% approved (97 decided, ~56 days)
- Solar / renewables : 93% approved (86 decided, ~57 days)
- Side extension : 98% approved (84 decided, ~56 days)
- Outbuilding / garden room : 93% approved (60 decided, ~56 days)
- Two-storey extension : 98% approved (50 decided, ~56 days)
Method
Figures are aggregates over the public planning decisions we hold for Cambridge, 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.