11 Thornhill Avenue Brighton BN1 8RG Data via plota.co.uk
Proposal
Certificate of lawfulness for proposed loft conversion with hip to gable extension, front rooflights and rear dormer, and single storey rear extension. Data via plota.co.uk
Application progress
Under consideration
No decision has been issued yet. Plota predicts a decision around 27 Oct 2026, from Brighton and Hove's recent extensions.
Site constraints 5
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, 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, matched to this application by its address. 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
- Postcode
- BN1 8RG
- Received
- 1 Sept 2026
- Validated
- 1 Sept 2026
- Freehold owner
- Show
Decision outlook
Day 38 of the 56-day target. Brighton and Hove usually decides extensions by day 56.
Plota live figures for extensions decided by Brighton and Hove in the last twelve months, from validation. Brighton and Hove decision record →
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%).
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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