21 Sunningdale Avenue Leigh-on-sea Essex SS9 1JY Data via plota.co.uk
Proposal
Erect single storey rear/side extension Data via plota.co.uk
Application progress
Approved on 1 Oct 2026 · Delegated Decision · Last checked 2 Oct 2026
Site constraints 1
Checked on 6 October 2026. 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.
Sales history 2
Last sold for £450,000 in July 2019. Semi-detached house, freehold.
Sale prices from HM Land Registry's price paid record, matched to this application by its address.
Building
From the energy performance certificate lodged in June 2015, the latest held for this property. The building may have changed since. View the certificate
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Important details
- Council
- Southend
- Application type
- Full Application - Householder
- Postcode
- SS9 1JY
- Received
- 10 Aug 2026
- Validated
- 10 Aug 2026
- Ward
- Chalkwell
- Case officer
- Show
- Target decision
- 5 Oct 2026
- Decision
- Grant Conditional Permission
- Decision date
- 1 Oct 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Knight Gratrix Architects
How this decision compares
Decided in 52 days from validation, 4 days faster than Southend's median of 56 for extensions. Approved, as 86% of extensions here are.
Plota live figures for extensions decided by Southend in the last twelve months, from validation. Southend decision record →
Public comments
No public comments yet.
33 neighbours consulted · Last counted 2 Oct 2026
Consultation & key dates
- Statutory expiry
- 5 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
Southend ranks #155 out of 296 councils for householder decision speed. Householder applications are slightly less likely to be approved here (88%) than the national average (90%).
Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
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.
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21 Sunningdale Avenue Leigh-on-sea Essex SS9 1JY
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