11 Thornhill Avenue Brighton BN1 8RG Data via plota.co.uk
Proposal
Prior approval for the erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4.0m, for which the maximum height would be 3.30m, and for which the height of the eaves would be 2.60m. Data via plota.co.uk
Application progress
Approved on 13 Oct 2026 · Last checked 14 Oct 2026
Documents 9
Plans & drawings 5
Application forms 2
Consultation & comments 1
Site constraints 5
Checked on 9 October 2026. Historic England, the Environment Agency, Natural England, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI) 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.
Building
From the energy performance certificate lodged in November 2020, the latest held for this property. The building may have changed since. View the certificate
Every application in Brighton and Hove - and every UK council - as a live feed, an API, or a bulk CSV export.
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Important details
- Council
- Brighton and Hove
- Application type
- Prior Approval Extension
- Postcode
- BN1 8RG
- Received
- 1 Sept 2026
- Validated
- 1 Sept 2026
- Ward
- Patcham & Hollingbury
- Case officer
- Show
- Target decision
- 13 Oct 2026
- Decision
- Prior Approval Required Approved
- Decision date
- 13 Oct 2026
- Applicant
- Show
- Agent
- Claire Haigh Associates Ltd
- Freehold owner
- Show
How this decision compares
Decided in 42 days from validation, 14 days faster than Brighton and Hove's median of 56 for extensions. Approved, as 96% of extensions here are.
Plota live figures for extensions decided by Brighton and Hove in the last twelve months, from validation. Brighton and Hove decision record →
Public comments
4 neighbours consulted · Last counted 11 Oct 2026
Consultation & key dates
- Neighbours
- 8 Sept 2026
- Consultation
- 8 Sept 2026
- Comments by
- 6 Oct 2026
- Site or press notice
- 7 Sept 2026
- Statutory expiry
- 13 Oct 2026
- Env. assessment
- No
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Nearby activity
Brighton and Hove is slower than most councils at deciding householder applications, ranking #238 out of 296. Householder applications are slightly more likely to be approved here (95%) than the national average (90%).
Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use
Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.
Freehold owner: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.
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11 Thornhill Avenue Brighton BN1 8RG
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