25 Third Avenue Newhaven East Sussex BN9 9JA

1. 13 Feb 2023

   Received by Lewes

2. 31 Mar 2023

   Decision issued: Approved

3. 4 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

• 21 Second Avenue Newhaven East Sussex BN9 9HP

  LW/26/0365 Submitted 13 Jul 2026 108m away

  94% historically approved · decision due ~7 Sep

  Erection of single storey detached outbuilding at the rear garden, addition of 1no. rear dormer, 3no. rooflights to front of the main building and replacement of existing hipped roof with gable

  Awaiting decision Householder Loft or dormer 23 docs
  Small domestic

• 4 Grays Crescent Newhaven East Sussex BN9 9FE

  TW/23/0024/TPO Submitted 22 Mar 2023 289m away

  T1 - Sycamore - Crown reduction 3m to bring the tree to a structured pollard due to 10" cavity in at the root plate T2 - Sycamore - Crown reduction 4m due to poor previous reduction, severe mental anguish of customer, she is constantly worried of the falling, to reduce shading and general mainenance

  Withdrawn Trees 9 docs

• 7 Grays Crescent Newhaven East Sussex BN9 9FE

  LW/26/0269 Submitted 19 May 2026 327m away

  Conversion of integrated front garage to living space including replacement of garage door with window

  Granted Householder Windows or glazing 18 docs
  Domestic

• 34 The Rose Walk Newhaven East Sussex BN9 9NJ

  LW/24/0391 Submitted 7 Jun 2024 332m away

  Small Side rear extension infilling area as a single storey extension with mono pitched roof

  Granted Lawful development Extension 9 docs
  Small domestic

• 29 The Rose Walk Newhaven East Sussex BN9 9NJ

  LW/21/0457 Submitted 11 Jun 2021 349m away

  conversion of existing loft space to form a habitable room and ensuite WC with addition of 2no rooflights at the rear including removal of chimney externally and through the building

  Granted Lawful development Loft or dormer 11 docs

• 4 Courtland Mews Church Hill Newhaven East Sussex BN9 9LU

  LW/25/0538 Submitted 11 Sep 2025 362m away

  Conversion of an existing garage into a habitable space

  Granted Lawful development 6 docs

• LW/26/0319 Granted

  Alder Lake Farm Oxbottom Lane Newick East Sussex BN8 4FD

  This application seeks a Certificate of Lawfulness to confirm that planning permission LW/22/0763 has been lawfully implemented through the carrying out of a material operation and is therefore extant

  12 Jun 2026 Lawful development
• LW/26/0313 Granted

  11 Sherwood Road Seaford East Sussex BN25 3EH

  Continuous use of the loft conversion with rear/side dormer for a period in excess of 4 years

  8 Jun 2026 Lawful development
• LW/26/0300 Granted

  73 Sutton Drove Seaford East Sussex BN25 3NH

  Erection of single storey side extension at ground floor level

  2 Jun 2026 Lawful development
• LW/26/0317 Granted

  11 High Hurst Close Newick East Sussex BN8 4NJ

  Addition of 1 no. side dormer at first floor level

  11 Jun 2026 Lawful development
• LW/26/0297 Granted

  18 Cricketfield Newick East Sussex BN8 4LL

  Hip to gable roof extension and addition of 1no. rear flat roofed dormer

  29 May 2026 Lawful development