21 BIRCHWOOD AVENUE, BECKENHAM, BR3 3PY

1. 20 Feb 2026

   Received by Bromley

2. 17 Apr 2026

   Decision issued: PROPOSED USE/DEVELOPMENT IS NOT LAWFUL

3. 11 Aug 2026

   Added to PlanIndex

The council has decided this application; the published outcome sits in the record above and the decision notice on the council portal carries the detail, including any conditions.

If permission was granted, work must normally begin within three years of the decision. If it was refused, the applicant can appeal within the statutory time limit or submit a revised scheme.

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 BIRCHWOOD AVENUE, BECKENHAM, BR3 3PY

  26/01667/HPA Submitted 27 Apr 2026 0m away

  Removal of existing side structure and construction of single storey rear extension.

  Granted Householder Extension 8 docs
  Small domestic

• 67 BIRCHWOOD AVENUE, BECKENHAM, BR3 3PY

  26/00786/LDC Submitted 27 Feb 2026 0m away

  Use of dwellinghouse for accommodation for one looked-after child falls within Use Class C3(b) LAWFUL DEVELOPMENT CERTIFICATE (PROPOSED)

  Decided Lawful development 5 docs
  Domestic

• 43 Derrick Road, Beckenham, BR3 3QG

  21/02662/FULL6 Submitted 26 May 2021 109m away

  Hip to gable loft conversion with rear dormer and front rooflights.

  Granted Householder Loft or dormer 14 docs
  Domestic

• 4 CHERRY TREE WALK, BECKENHAM, BR3 3PG

  26/02961/LDC Submitted 14 Jul 2026 121m away

  80% historically approved · decision due ~16 Sep

  Single storey rear extension LAWFUL DEVELOPMENT CERTIFICATE (PROPOSED)

  Awaiting decision Lawful development Extension 4 docs
  Small domestic

• 6 CHERRY TREE WALK, BECKENHAM, BR3 3PG

  26/03452/LDC Submitted 27 Aug 2026 121m away

  80% historically approved · decision due ~22 Oct

  Demolition of existing rear conservatory, construction of single storey rear extension. LAWFUL DEVELOPMENT CERTIFICATE (PROPOSED)

  Awaiting decision Lawful development Extension Demolition 4 docs
  Small domestic

• 38 GORDON ROAD, BECKENHAM, BR3 3QF

  26/02183/NOT Submitted 30 May 2026 146m away

  Single storey rear extension, extending beyond the rear wall of the original house by 5.05m, for which the maximum height would be 3.15m, and for which the height of the eaves would be 3.15m (42 Day Notification for Householder Permitted Development Prior Approval)

  Granted Prior approval Extension 10 docs
  Small domestic

• 26/02728/LDC Decided

  6 DUKES WAY, WEST WICKHAM, BR4 9AU

  Proposed outbuilding to rear garden LAWFUL DEVELOPMENT CERTIFICATE (PROPOSED)

  7 Jul 2026 Lawful development
• 26/02338/LDC Withdrawn

  75 GODDINGTON LANE, ORPINGTON, BR6 9DT

  Removal of chimney, conversion of garage to habitable space, part hip to gable loft conversion comprising side dormers and rooflights, elevational alterations. LAWFUL DEVELOPMENT CERTIFICATE (PROPOSED)

  9 Jun 2026 Lawful development
• 26/03423/LDC Awaiting decision

  42 GROVELAND ROAD, BECKENHAM, BR3 3QA

  Loft conversion comprising rear dormer with Juliet balcony and rooflights to front. LAWFUL DEVELOPMENT CERTIFICATE (PROPOSED)

  1 Sep 2026 Lawful development
• 26/02684/LDC Decided

  8 ROWDEN ROAD, BECKENHAM, BR3 4NA

  Removal of chimney and construction of loft conversion with rear L-Shaped dormer and front rooflights LAWFUL DEVELOPMENT CERTIFICATE (PROPOSED)

  3 Jul 2026 Lawful development
• 26/02598/LDC Decided

  12 MORSTON GARDENS, MOTTINGHAM, LONDON, SE9 4NE

  Single storey rear extension (where prior approval was not required under ref 26/00873/NOT) LAWFUL DEVELOPMENT CERTIFICATE (PROPOSED)

  26 Jun 2026 Lawful development