Planning application
21 Rockleigh Avenue Leigh-on-sea Essex SS9 1LA
Works: Extension Loft or dormer Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within three years of the decision or the permission lapses.
Proposal
Erect single storey rear/side extension with rooflights and alter elevations
As published by the council, reference 26/00682/FULH
Application record
- Reference
- 26/00682/FULH
- Type
- Full Application - Householder
- Status
- Conditions
- Decision
- Granted As published: Grant Conditional Permission
- Received
- 20 May 2026
- Validated
- 22 May 2026
- Decided
- 16 Jul 2026
- Ward
- Chalkwell
- Decision by
- Delegated
- Postcode
- SS9 1LA
Site history
Applications at this address on the Southend-on-Sea register
This site has had 2 applications since 2026: 2 approved, 0 refused.
-
26/00683/CLP Granted
21 Rockleigh Avenue Leigh-on-sea Essex SS9 1LA
Dormer to rear and rooflights to front to form habitable accommodation in the loftspace (certificate of lawful development - proposed)
Timeline
Dates from the published record
-
20 May 2026
Received by Southend-on-Sea
-
22 May 2026
Validated
Checked as complete and ready for consideration.
-
16 Jul 2026
Decision issued: Grant Conditional Permission
-
23 Jul 2026
Added to PlanIndex
Who's behind it
Company information only, from the register and Companies House
Knight Gratrix Architects Agent, an architecture practice
92 applications on PlanIndex · across 2 councils · 86% granted
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See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
Documents on file for this application
A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.
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Open the documentsWhat this grant of permission means
Southend-on-Sea granted permission on 16 July 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.
About householder applications
Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.
Nearby applications
Within 0.3 miles
-
21 Rockleigh Avenue Leigh-on-sea Essex SS9 1LA
Dormer to rear and rooflights to front to form habitable accommodation in the loftspace (certificate of lawful development - proposed)
Granted Lawful development Loft or dormer -
Land Between 32 - 36 Sandleigh Road Leigh-on-sea Essex SS9 1JU
Demolish existing storage building (Application for Prior Approval for Demolition)
Refused Other Demolition -
Land Between 32 - 36 Sandleigh Road Leigh-on-sea Essex SS9 1JU
Demolish storage building (Certificate of Lawful Development - Existing)
Granted Lawful development Demolition -
30A Sandleigh Road Leigh-on-sea Essex SS9 1JU
Metal balcony and staircase to rear (certificate of lawful development - existing)
Granted Lawful development -
30A Sandleigh Road Leigh-On-Sea Essex SS9 1JU
Replace wooden external staircase with metal external staircase to rear, alter elevations (Retrospective)
Refused Full applications 6 docs -
21 Sunningdale Avenue Leigh-on-sea Essex SS9 1JY
Erect single storey rear/side extension
Granted ExtensionSmall domestic
Other householder applications
In Southend-on-Sea
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26/01161/FULH Status unknown
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Erect two storey side extension, porch to front and single storey rear extension
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26/01153/FULH Status unknown
17 Surbiton Avenue Southend-on-sea Essex SS1 2QS
Erect single storey side and rear extension, alteration to side elevation
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26/01147/FULH Status unknown
39 Hadleigh Road Leigh-on-sea Essex SS9 2DY
Raise height of boundary wall to a maximum of 1.5m, install new entrance gate to match existing, erect timber open framed carport to south of existing garage
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26/01145/FULH Status unknown
23 Wren Close Eastwood Essex SS9 5AG
Erect single storey rear extension with roof light, alteration to side elevation and install rooflight to rear elevation
-
26/01121/FULH Status unknown
1 St James Close Westcliff-on-sea Essex SS0 0BX
Install dormer to rear to form habitable accommodation in the loftspace with Juliet balcony, erect single storey infill extension to garage to attach to main dwelling, erect single storey side/front and single storey side/rear extensions, erect first floor front/side extension and first floor rear extension, install balcony to first floor side, alter elevations (Amended Proposal)