18 Tintern Avenue, London, NW9 0RJ

1. 9 Jul 2026

   Received by Brent

2. 23 Jul 2026

   Validated

   Checked as complete and ready for consideration.

3. 2 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 17 September 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Brent took a median of 56 days over the applications it decided in the last year.

This application is with Brent for determination, against a statutory target of eight weeks. Over the last year Brent's median decision took 56 days. More in our guide to how long planning decisions take.

The published feed does not state which type of application this is; the register entry on Brent's portal will say. Our guide explains the common types.

• 34 Tintern Avenue, London, NW9 0RJ

  24/3126 Submitted 5 Nov 2024 2m away

  Prior approval for a single storey rear extension to dwellinghouse, in metres: Extending beyond the rear wall of the original house - 6m Maximum height - 3m Eaves height - 2.85m

  Granted Prior approval Extension 5 docs
  Small domestic

• 99 Tintern Avenue, London, NW9 0RH

  25/2553 Submitted 8 Sep 2025 57m away

  Demolition of side garage and existing front porch and erection of porch extension, two storey side extension, single storey rear extension and part first floor rear extension, hip to gable roof extension, rear dormer window with 1x front rooflight to the dwellinghouse.

  Granted Householder Extension Loft or dormer +2 9 docs
  Small domestic

• 25 Tintern Avenue, London, NW9 0RH

  20/2317 Submitted 3 Aug 2020 57m away

  Certificate of lawfulness for proposed removal of chimney, erection of hip to gable loft conversion with rear dormer window and juliet balcony; two rooflights to front roof slope and one window in gable end of dwellinghouse

  Granted Lawful development Loft or dormer Windows or glazing 10 docs
  Domestic

• 19 Tintern Avenue, London, NW9 0RH

  21/0377 Submitted 3 Feb 2021 57m away

  Certificate of lawfulness for proposed hip to gable loft conversion with rear dormer and juliet balcony; new window to side elevation, front porch extension, single storey rear extension and single storey detached outbuilding in rear garden of dwellinghouse.

  Granted Lawful development Extension Loft or dormer +1 11 docs
  Small domestic

• 19 Tintern Avenue, London, NW9 0RH

  26/0907 Submitted 9 Apr 2026 57m away

  Proposed single storey outbuilding in the rear garden to the dwellinghouse (retrospective)

  Granted Householder 7 docs
  Small domestic

• 87 Tintern Avenue, London, NW9 0RH

  20/1439 Submitted 14 May 2020 57m away

  Prior approval for a single storey rear extension to dwellinghouse, in metres: Extending beyond the rear wall of the original house - 6m Maximum height - 3m Eaves height - 2.8m

  Granted Prior approval Extension 10 docs
  Small domestic