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Planning application

23/01362/LDCP

131 Blackfen Road Sidcup Kent DA15 8PZ

Granted Bexley Lawful Development Certificate-Proposed

Proposal

Lawful Development Certificate (Proposed) for the conversion of roof space involving alterations to existing roofline, including a hip to gable enlargement, a rear dormer extension and rooflights to front roofslope and erection of single storey rear extension following demolition of existing conservatory.

As published by the council, reference 23/01362/LDCP

Timeline

Dates from the published record

  1. 9 Jun 2023

    Received by Bexley

  2. 13 Jun 2023

    Validated

    Checked as complete and ready for consideration.

  3. 31 Jul 2023

    Decision issued: Certificate of Lawfulness Granted

  4. 3 Aug 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

  • 25/02461/LDCP Withdrawn

    108 Blackfen Road Sidcup Kent DA15 8SW

    Lawful Development Certificate (Proposed) for the change of use from Residential Dwelling (Class C3) to Children's Home (Class C2).

    28 Nov 2025 39m away Lawful development
  • 18/01657/GPDOT Granted

    Cabinet Side Of 110 Blackfen Road Sidcup Kent

    Notice of permitted development for telecommunications apparatus comprising the installation of a cabinet.

    21 Jun 2018 40m away Telecoms
  • 25/02255/FUL Awaiting decision

    141 Blackfen Road Sidcup Kent DA15 8PZ

    Erection of a single storey rear extension.

    30 Oct 2025 46m away Full applications
  • 18/00951/FUL Granted

    98 Blackfen Road Sidcup Kent DA15 8SW

    Single storey side and rear extension.

    23 Apr 2018 62m away Full applications
  • 18/01658/GPDOT Granted

    Cabinet Outside 94 Blackfen Road Sidcup Kent

    Notice of permitted development for telecommunications apparatus comprising the installation of a cabinet.

    21 Jun 2018 70m away Telecoms
  • 26/00119/LDCP Granted

    149 Blackfen Road Sidcup Kent DA15 8PZ

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

    21 Jan 2026 83m away Lawful development

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