Planning decisions in Horsham
As of 16 Jun 2026, covering the last 5 years.
On the public planning record, Horsham approved 95% of 1,870 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 : 96% approved (395 decided, ~56 days)
- Rear extension : 96% approved (261 decided, ~56 days)
- Listed building / conservation : 99% approved (177 decided, ~54 days)
- Demolition : 94% approved (175 decided, ~62 days)
- Tree work : 100% approved (121 decided, ~49 days) †
- Roof / fenestration : 97% approved (112 decided, ~56 days)
- Side extension : 100% approved (87 decided, ~62 days) †
- Change of use : 84% approved (82 decided, ~60 days)
- Loft conversion : 94% approved (79 decided, ~56 days)
- Outbuilding / garden room : 96% approved (71 decided, ~58 days)
- New dwelling : 74% approved (70 decided, ~78 days)
- Two-storey extension : 97% approved (68 decided, ~56 days)
- Porch : 98% approved (65 decided, ~61 days)
- Conservatory / orangery : 98% approved (61 decided, ~56 days)
- Driveway / dropped kerb : 89% approved (46 decided, ~71 days)
† We hold no refused decisions for this type here, so treat a full approval rate with caution. The council's own portal has the complete history.
Method
Figures are aggregates over the public planning decisions we hold for Horsham, 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.