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Planning application

26/00312/LDCP

80 Birchwood Avenue Sidcup Kent DA14 4JU

Granted Bexley Lawful Development Certificate-Proposed

Proposal

Lawful Development Certificate (Proposed) for the conversion of roof space including hip to gable enlargement, rear dormer extension and rooflights to front roof slope and erection of single storey outbuilding.

As published by the council, reference 26/00312/LDCP

Timeline

Dates from the published record

  1. 16 Feb 2026

    Received by Bexley

  2. 10 Apr 2026

    Decision issued: Certificate of Lawfulness Granted

  3. 25 Jul 2026

    Added to PlanIndex

What a grant of permission means

The process from here

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.

About lawful development applications

How this application type works

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

Nearby applications

Within 500 metres

  • 26/00959/FUL Granted

    76 Birchwood Avenue Sidcup Kent DA14 4JU

    Erection of a single storey side extension following demolition of existing garage.

    13 May 2026 20m away Full applications
  • 25/02507/FUL Granted

    65 Birchwood Avenue Sidcup Kent DA14 4JZ

    Retention of existing raised patio and landscaping changes to garden levels.

    8 Dec 2025 43m away Full applications
  • 18/00891/FUL Granted

    71 Birchwood Avenue Sidcup Kent DA14 4JZ

    Single storey rear extension

    16 Apr 2018 72m away Full applications
  • 19/03048/FUL Granted

    99 Walton Road Sidcup Kent DA14 4LL

    Part one/part two storey side and rear extensions. Alterations to roofline to provide rooms in the roofspace.

    19 Dec 2019 83m away Full applications
  • 18/01453/FUL Granted

    100 Walton Road Sidcup Kent DA14 4LW

    Single storey side and rear extension.

    4 Jun 2018 116m away Full applications
  • 25/02352/FUL Awaiting decision

    81 Birchwood Avenue Sidcup Kent DA14 4JZ

    Single storey rear extension following demolition of existing conservatory.

    11 Nov 2025 116m away Full applications

In Bexley

  • 26/01110/LDCP Granted

    106 Long Lane Bexleyheath Kent DA7 5AW

    Lawful Development Certificate (Proposed) for the conversion of roof space including rear L-shaped dormer extension.

    4 Jun 2026 Lawful development
  • 26/01099/LDCP Granted

    41 Sherbrooke Close Bexleyheath Kent DA6 7EQ

    Lawful Development Certificate (Proposed) for the conversion of roof space involving alterations to existing roofline including a rear dormer extension and rooflight to front roofslope.

    3 Jun 2026 Lawful development
  • 26/01055/LDCP Granted

    48 Hythe Avenue Bexleyheath Kent DA7 5NU

    Lawful Development Certificate (Proposed) for the conversion of existing side garage and WC to habitable space.

    27 May 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
  • 26/01074/LDCP Granted

    49 Hatherley Road Sidcup Kent DA14 4BB

    Lawful Development Certificate (Proposed) for the erection of a single storey rear extension following demolition of existing rear lean to.

    1 Jun 2026 Lawful development