55 Annesley Avenue London NW9 5EG

1. 14 May 2026

   Received by Barnet

2. 25 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 9 July 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Barnet took a median of 44 days over the applications it decided in the last year.

This application is with Barnet for determination, against a statutory target of eight weeks. Over the last year Barnet decided lawful development applications in a median of 28 days. More in our guide to how long planning decisions take.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 59 Annesley Avenue London NW9 5EG

  21/5209/HSE Submitted 29 Sep 2021 0.1 miles away

  First floor rear extension

  Withdrawn Householder Extension 9 docs
  Domestic

• 21 Colindale Avenue London NW9 5DS

  26/0607/FUL Submitted 17 Feb 2026 0.1 miles away

  Erection of a single storey rear extension and reconfiguration of the internal layout of the commercial unit, including partial alteration of the existing single storey roof to form two internal courtyards with associated flank door openings and 2no rooflights

  Granted Full applications Extension Loft or dormer 12 docs
  Small domestic

• 55A Colindale Avenue London NW9 5EP

  25/5015/FUL Submitted 15 Dec 2025 0.1 miles away

  61% historically approved · decision due ~13 Feb

  Single storey rear extension. Roof extension involving rear dormer window and 1no. front facing rooflight

  Awaiting decision Full applications Extension Loft or dormer +1 11 docs
  Small domestic

• Silk House And Shoelands Court Annesley Avenue London NW9

  25/4428/ESR Submitted 5 Nov 2025 0.1 miles away

  Environmental Impact Assessment - Screening Opinion

  Decided Outline 2 docs

• Communicable Disease Surveillance Centre 61 Colindale Avenue London NW9 5EQ

  TPP/0384/26 Submitted 6 Jul 2026 0.1 miles away

  79% historically approved · decision due ~31 Aug

  1 x Wild Cherry (applicants ref. T20) - Prune to clear structures by 1m. Prune crown to clear wooden beam structure by entrance to building and lamp. Standing in Area A1 of Tree Preservation Order. 1 x Wild Cherry (applicants ref. T23) - Fell to just above ground level. Standing in Area A1 of Tree Preservation Order. 1 x Japanese Flowering Cherry (applicants ref. T24) - Prune to clear structure by 1m. Standing in Area A1 of Tree Preservation Order. 1 x Japanese Flowering Cherry (applicants ref. T25) - Prune to clear structure 1m. Prune crown to clear wooden beam structure. Standing in Area A1 of Tree Preservation Order. 1 x Japanese Flowering Cherry (applicants ref. T31) - Remove broken/hanging branch. Standing in Area A1 of Tree Preservation Order. 1 x Lombardy Poplar (applicants ref. T58) - Fell to ground level, leave 1m stump and stack cuttings near stump for biodiversity value. Standing in Area A1 of Tree Preservation Order. 1 x Lombardy Poplar (applicants ref. T60) - Fell to ground level. Standing in Area A1 of Tree Preservation Order. 1 x Lombardy Poplar (applicants ref. T61) - Fell to ground level. Standing in Area A1 of Tree Preservation Order. 1 x Lombardy Poplar (applicants ref. T62) - Fell to ground level. Standing in Area A1 of Tree Preservation Order. 1 x Silver Birch (applicants ref. T65) - Fell to ground level. Standing in Area A1 of Tree Preservation Order. 1 x Weeping Willow (applicants ref. T82) - Prune to clear structure by 1m. Standing in Area A1 of Tree Preservation Order. 1 x Lombardy Poplar (applicants ref. T95) - Clear vegetation to allow access to basal areas of trees for inspection purposes. Standing in Area A1 of Tree Preservation Order.

  Awaiting decision Trees

• Communicable Disease Surveillance Centre 61 Colindale Avenue London NW9 5EQ

  TPP/0450/26 Submitted 3 Aug 2026 0.1 miles away

  79% historically approved · decision due ~28 Sep

  2 x Willow (applicants ref. T1, T2) - Remove snapped branches. Standing in Area A1 of Tree Preservation Order. Exempt Work

  Awaiting decision Trees

• 26/2679/192 Granted

  21 Myddelton Park London N20 0JH

  Single storey rear extension and increase in ridge height of existing rear outrigger (Amended description).

  Received 20 Jul, published by the council 7 Aug 2026 Lawful development
• 26/1907/191 Granted

  8 Golders Manor Drive London NW11 9HT

  Use of the property as a self-contained residential unit at ground floor level and the first and second floors as a 4-bedroom, 4-person House in Multiple Occupation (Sui Generis) (AMENDED DESCRIPTION)

  Received 21 May, published by the council 16 Aug 2026 Lawful development
• 26/2059/192 Refused

  Low Ridge Rowley Lane Barnet EN5 3HS

  Erection of a rear outbuilding

  Received 3 Jun, published by the council 16 Aug 2026 Lawful development
• 26/2066/192 Granted

  355 Hendon Way London NW4 3NB

  Roof extension involving rear dormer window and 3no. front facing rooflights. Removal of chimney on rear elevation (AMENDED DESCRIPTION)

  Received 3 Jun, published by the council 16 Aug 2026 Lawful development
• 26/2525/192 Granted

  39 Ridgeway Avenue Barnet EN4 8TN

  Single storey rear extension

  Received 6 Jul, published by the council 9 Aug 2026 Lawful development