21 Lansdowne Avenue Leigh-on-sea Essex SS9 1LJ

This site has had 3 applications since 2026.

• 26/00987/GPDE Decided

  21 Lansdowne Avenue Leigh-on-sea Essex SS9 1LJ

  Erect single storey rear extension projecting 5.5m beyond the existing rear wall of the dwelling, 2.7m high to eaves and with a maximum height of 3m

  Decided 20 Aug 2026
• 26/00986/CLP Decided

  21 Lansdowne Avenue Leigh-on-sea Essex SS9 1LJ

  Install dormer to rear and rooflights to front to form habitable accommodation in the loftspace (Lawful Development Certificate - Proposed)

  Lawful development

1. 22 Aug 2026

   Received by Southend-on-Sea

2. 24 Aug 2026

   Validated

   Checked as complete and ready for consideration.

3. 28 Aug 2026

   Added to PlanIndex

4. 16 Oct 2026

   Status changed to Decided

Southend-on-Sea has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. More in our guide to what happens after a planning decision.

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.

• 21 Lansdowne Avenue Leigh-on-sea Essex SS9 1LJ

  26/00986/CLP 50 yards away

  85% historically approved

  Install dormer to rear and rooflights to front to form habitable accommodation in the loftspace (Lawful Development Certificate - Proposed)

  Decided Lawful development Loft or dormer

• 33 Lansdowne Avenue Leigh-on-sea Essex SS9 1LJ

  26/01275/CLP 50 yards away

  85% historically approved

  Demolish conservatory, single storey rear extension, alter elevations, remove rear chimney stack, install detached outbuilding and heat pump to rear garden (Lawful Certificate Development - Proposed)

  Awaiting decision Lawful development Extension Demolition
  Small domestic

• 33 Lansdowne Avenue Leigh-on-sea Essex SS9 1LJ

  26/01309/FULH 50 yards away

  86% historically approved

  Raise ridge to form habitable accommodation in loftspace with dormer to rear and rooflights to front, install solar PV panels to roof, demolish conservatory, erect single storey rear extension, alter elevations, remove rear chimney stack, erect detached outbuilding and heat pump to rear garden

  Awaiting decision New dwelling Extension +2
  Small domestic

• 52 Woodfield Park Drive Leigh-on-sea Leigh-On-Sea Essex SS9 1LW

  21/01123/AD Submitted 26 May 2021 50 yards away

  Application for approval of details pursuant to condition 03 (details of materials), condition 07 (details of energy efficiency) and condition 09 (details of hard and soft landscaping) of planning permission 19/02239/FUL dated 06.02.2020

  Granted Conditions 7 docs

• 31 Fernleigh Drive Leigh-on-sea Essex SS9 1LG

  24/01820/FULH Submitted 14 Nov 2024 50 yards away

  Erect first floor rear extension and extend first floor rear balcony, install external spiral staircase to rear (amended proposal)

  Granted Householder Extension
  Domestic

• 53A Fernleigh Drive Leigh-on-sea Essex SS9 1LG

  24/01655/FUL Submitted 23 Oct 2024 50 yards away

  Extend existing vehicle crossover onto Fernleigh Drive

  Granted Full applications

• 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