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Planning application

21 Rockleigh Avenue Leigh-on-sea Essex SS9 1LA

Granted Southend-on-Sea 26/00683/CLP Certificate of Lawfulness (Proposed)

Works: Loft or dormer

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Dormer to rear and rooflights to front to form habitable accommodation in the loftspace (certificate of lawful development - proposed)

As published by the council, reference 26/00683/CLP

Application record

Reference
26/00683/CLP
Type
Certificate of Lawfulness (Proposed)
Status
Permitted
Decision
Granted As published: Grant Lawful Dev Certificate (Proposed)
Received
20 May 2026
Validated
22 May 2026
Decided
6 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.

  • 26/00682/FULH Granted

    21 Rockleigh Avenue Leigh-on-sea Essex SS9 1LA

    Erect single storey rear/side extension with rooflights and alter elevations

    Decided 16 Jul 2026 Householder

Timeline

Dates from the published record

  1. 20 May 2026

    Received by Southend-on-Sea

  2. 22 May 2026

    Validated

    Checked as complete and ready for consideration.

  3. 6 Jul 2026

    Decision issued: Grant Lawful Dev Certificate (Proposed)

  4. 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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Documents

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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What this grant of permission means

Southend-on-Sea granted permission on 6 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 lawful development applications

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

In Southend-on-Sea

  • 26/01070/CLP Granted

    58 Ronald Park Avenue Westcliff-on-sea Essex SS0 9QN

    Dormer to rear to form habitable accommodation in the loft space and rooflights to front (certificate of lawful development - proposed)

    Received 11 Aug, published by the council 14 Aug 2026 Lawful development
  • 26/01065/CLP Granted

    1132 London Road Leigh-on-sea Essex SS9 2AJ

    Dormer to rear and rooflights to front to form habitable accommodation in the loftspace and single storey side/rear extension (certificate of lawful development - proposed)

    Received 10 Aug, published by the council 14 Aug 2026 Lawful development
  • 26/01018/CLP Refused

    92 Vardon Drive Leigh-on-sea Essex SS9 3SQ

    Hip to gable roof extension with dormer to rear and rooflights to front to form habitable accommodation in the loftspace (certificate of lawful development - proposed)

    Received 30 Jul, published by the council 8 Aug 2026 Lawful development
  • 26/01008/CLP Granted

    61 Flemming Avenue Leigh-on-sea Essex SS9 3AN

    Hip to gable loft conversion, rooflights to front, and dormer to rear with Juliet balcony to create habitable accommodation in roof space (Lawful Development Certificate - Proposed).

    Received 29 Jul, published by the council 8 Aug 2026 Lawful development
  • 26/01020/CLP Granted

    66 Marlborough Road Southend-on-sea Essex SS1 2UD

    Single storey side extension (Lawful Development Certificate - Proposed)

    Received 31 Jul, published by the council 8 Aug 2026 Lawful development