103 Southsea Avenue Leigh-On-Sea Essex SS9 2BH

1. 30 Oct 2019

   Received by Southend-on-Sea

2. 23 Dec 2019

   Decision issued: Grant Lawful Dev Certificate (Proposed)

3. 19 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 103 Southsea Avenue Leigh-On-Sea Essex SS9 2BH

  21/00895/CLP Submitted 30 Apr 2021 0m away

  Dormer to rear to form habitable accommodation in roofspace, rooflights to front (Lawful development certificate-proposed)

  Granted Lawful development Loft or dormer 9 docs

• 117 Southsea Avenue Leigh-on-sea Leigh-On-Sea Essex SS9 2BH

  21/01281/FULH Submitted 18 Jun 2021 0m away

  Demolish existing ground floor rear extension, erect single storey rear extension, erect single storey side extension (Amended proposal)

  Refused Householder Extension Demolition 7 docs
  Small domestic

• 117 Southsea Avenue Leigh-on-sea Leigh-On-Sea Essex SS9 2BH

  21/01287/FULH Submitted 21 Jun 2021 0m away

  Enlarge existing dormer to rear, install julliette balcony to rear

  Refused Householder Loft or dormer 7 docs
  Domestic

• 117 Southsea Avenue Leigh-On-Sea Essex SS9 2BH

  21/00670/FULH Submitted 1 Apr 2021 14m away

  Demolish existing ground floor rear extension and erect part single/part two storey rear extension, install second floor balcony to rear

  Refused Householder Extension Demolition 10 docs
  Domestic

• 152 Southsea Avenue Leigh-on-sea Essex SS9 2BJ

  26/00888/FULH 35m away

  84% historically approved

  Demolish existing conservatory and erect single storey rear extension with rooflights

  Awaiting decision Extension Loft or dormer +1
  Small domestic

• 82 Southsea Avenue Leigh-on-sea Leigh-On-Sea Essex SS9 2BJ

  21/01096/CLP Submitted 23 May 2021 35m away

  Dormer to rear (Lawful Development Certificate - Proposed)

  Granted Lawful development Loft or dormer 6 docs

• 26/00613/CLE Granted

  57 York Road Southend-on-sea Essex SS1 2BZ

  Use dwelling as a 9-person HMO (Certificate of Lawfulness - Existing)

  5 May 2026 Lawful development
• 26/01132/CLP Status unknown

  16 Plymtree Thorpe Bay Essex SS1 3RA

  Detached outbuilding to rear (certificate of lawful development - proposed)

  7 Aug 2026 Lawful development
• 26/00690/CLP Refused

  472 Woodgrange Drive Southend-on-sea Essex SS1 3ED

  Extend garage at front and rear

  21 May 2026 Lawful development
• 26/00741/CLE Granted

  57 - 59 Elm Road Leigh-on-sea Essex SS9 1SP

  Confirmation that planning permission 16/01572/FUL as varied by 18/01443/AMDT has been lawfully implemented (Certificate of Lawful Development - Existing)

  2 Jun 2026 Lawful development
• 26/00746/CLP Granted

  21 Shanklin Drive Westcliff-on-sea Essex SS0 9XU

  Removal of chimney stack on rear roof slope, erect dormer to rear to create habitable accommodation in roof space, two rooflights to front roof slope, alterations to elevations (Lawful Development Certificate - Proposed)

  2 Jun 2026 Lawful development