33 Marechal Niel Avenue Sidcup Kent DA15 7PB

1. 2 Sep 2025

   Received by Bexley

2. 20 Oct 2025

   Decision issued: Certificate of Lawfulness Granted

3. 10 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

• 13 Marechal Niel Avenue Sidcup Kent DA15 7PB

  26/01615/FUL Submitted 21 Aug 2026 34m away

  91% historically approved · decision due ~16 Oct

  Conversion of garage to habitable room.

  Awaiting decision Full applications 6 docs

• 41 Marechal Niel Avenue Sidcup Kent DA15 7PB

  21/03485/GPDE Submitted 17 Nov 2021 34m away

  The erection of a single storey rear extension, which would extend beyond the rear wall of the dwelling by 5.5 metres, for which the maximum height would be 3.2 metres, and for which the height of the eaves would be 3 metres

  Granted Prior approval Extension 13 docs
  Small domestic

• 18 Marechal Niel Avenue Sidcup Kent DA15 7PD

  25/02116/FUL Submitted 13 Oct 2025 83m away

  91% historically approved · decision due ~8 Dec

  Application under Section 73 of the Town and Country Planning Act 1990 to vary condition 2 (Plans) to alter rear elevation of planning permission Ref: 23/02226/FUL for the Application under Section 73 of the Town and Country Planning Act 1990 to vary condition 2 (Approved Drawings) to alter the roofline and side and rear fenestration and of planning permission Ref: 22/02022/FUL for the Hip-to-gable and dormer roof extensions with Juliet balcony to rear, and four rooflights to front roof slope, together with single storey side / rear extension and conversion of garage to habitable room with alterations to front elevation.

  Awaiting decision Full applications Extension Loft or dormer +1 3 docs
  Small domestic

• 107 Harland Avenue Sidcup Kent DA15 7NZ

  18/01960/FUL Submitted 3 Jul 2018 84m away

  Part one, part two storey side and rear extension and conversion of garage to habitable room.

  Granted Full applications Extension 3 docs

• 4 Braemar Gardens Sidcup Kent DA15 7NH

  26/00754/FUL Submitted 16 Apr 2026 86m away

  91% historically approved · decision due ~13 Aug

  Conversion of garage to habitable room including alterations to front fenestration.

  Awaiting decision Full applications Windows or glazing

• 23 St Margarets Avenue Sidcup Kent DA15 7NP

  18/01044/GPDE Submitted 25 Apr 2018 96m away

  The erection of a single storey rear extension, which would extend beyond the rear wall of the dwelling by 4 metres, for which the maximum height would be 3.4 metres, and for which the height of the eaves would be 3 metres.

  Granted Prior approval Extension 4 docs
  Small domestic

• 26/01366/LDCE Granted

  106 Bexley Road Erith Kent DA8 3SP

  Lawful Development Certificate (Existing) for commencement of works relating to 21/03064/FULM.

  10 Jul 2026 Lawful development
• 26/00700/LDCE Granted

  45 Braundton Avenue Sidcup Kent DA15 8EN

  Lawful Development Certificate (Existing) for the continued use of the premises as a HMO for up to 6 occupants.

  9 Apr 2026 Lawful development
• 26/01321/LDCP Refused

  17 Walton Road Sidcup Kent DA14 4LJ

  Lawful Development Certificate (Proposed) for the erection of a single storey rear extension.

  7 Jul 2026 Lawful development
• 26/01464/LDCP Awaiting decision

  7 Stephen Road Bexleyheath Kent DA7 6EF

  Lawful Development Certificate (Proposed) for the siting of a mobile home for ancillary use to the main dwellinghouse.

  27 Jul 2026 Lawful development
• 26/01457/LDCP Awaiting decision

  23 Park Mead Sidcup Kent DA15 9PE

  Lawful Development Certificate (Proposed) for the erection of a single storey rear extension.

  24 Jul 2026 Lawful development