18 Oliver Road Horsham West Sussex RH12 1LH Data via plota.co.uk
Proposal
Erection of a single storey ancillary residential annexe to provide accommodation incidental to the occupation of the existing dwellinghouse. Data via plota.co.uk
Application progress
Approved on 14 Sept 2026 · Delegated Decision · Last checked 15 Sept 2026
Site constraints 2
Checked on 6 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. Historic England, the Environment Agency, Natural England and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
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Important details
- Council
- Horsham
- Application type
- Householder
- Postcode
- RH12 1LH
- Received
- 20 Jul 2026
- Validated
- 20 Jul 2026
- Ward
- Denne
- Parish
- Horsham TC
- Case officer
- Show
- Target decision
- 14 Sept 2026
- Decision
- Application Permitted
- Decision date
- 14 Sept 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- RS Architectural Designs
How this decision compares
Decided in 56 days from validation, about the council's usual 56 days. Approved, as 96% of extensions here are.
Plota live figures for extensions decided by Horsham in the last twelve months, from validation. Horsham decision record →
Public comments
No public comments yet.
9 neighbours consulted · Last counted 15 Sept 2026
Consultation & key dates
- Alt. reference
- PP-15094133
- Planning Portal ref
- PP-15094133
- Comments by
- 25 Aug 2026
- Statutory expiry
- 14 Sept 2026
- Env. assessment
- No
Historical activity at this location
14 previous applications on record - archival context, not part of the live application.
Previous applications at this address
Nearby activity
Horsham ranks #105 out of 296 councils for householder decision speed. Householder applications are more likely to be approved here than most councils, with a 97% approval rate vs 90% nationally.
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18 Oliver Road Horsham West Sussex RH12 1LH
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