121 Princes Avenue, London, NW9 9JJ

1. 8 Nov 2021

   Received by Brent

2. 30 Dec 2021

   Decision issued: Certificate of Lawfulness - Granted

3. 1 Oct 2026

   Added to PlanIndex

Brent granted permission on 30 December 2021, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

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.

• 107 Princes Avenue, London, NW9 9JJ

  25/3033 Submitted 28 Oct 2025 50 yards away

  Change of use from single dwelling into 5x bed, 5x person HMO with cycle and refuse storage spaces to the front garden.

  Refused Full applications 13 docs
  Domestic

• 107 Princes Avenue, London, NW9 9JJ

  26/0074 Submitted 13 Jan 2026 50 yards away

  Proposed conversion of dwellinghouse into a 5 bedroom 5 person HMO (House in Multiple Occupation) together with secure cycle parking, refuse storage and front and rear garden landscaping and removal of drop kerb

  Refused Full applications 16 docs
  Domestic

• 105 Princes Avenue, London, NW9 9JJ

  21/3391 Submitted 6 Sep 2021 50 yards 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 - 3m

  Granted Prior approval Extension 7 docs
  Small domestic

• 109 Princes Avenue, London, NW9 9JJ

  20/2812 Submitted 10 Sep 2020 50 yards away

  Certificate of lawfulness for retrospective permission for conversion of single dwellinghouse into house of multiple occupancy.

  Refused Lawful development 5 docs
  Domestic

• 107 Princes Avenue, London, NW9 9JJ

  25/2401 Submitted 19 Aug 2025 50 yards 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 - 3.2m Eaves height - 3m

  Granted Prior approval Extension 7 docs
  Small domestic

• 232 Princes Avenue, London, NW9 9JH

  21/1419 Submitted 19 Apr 2021 100 yards 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 - 3m

  Granted Prior approval Extension 5 docs
  Small domestic

• 26/2285 Awaiting decision

  137 Chatsworth Road, London, NW2 5QT

  Certificate of lawfulness for proposed use as supported housing

  Received 8 Sep, published by the council 21 Sep 2026 Lawful development
• 26/2277 Awaiting decision

  65 The Avenue, Wembley, HA9 9PH

  Certificate of lawfulness for proposed conversion of outbuilding into a gym and sauna and extension to the outbuilding in rear garden of the dwellinghouse.

  Received 8 Sep, published by the council 21 Sep 2026 Lawful development
• 26/2199 Awaiting decision

  Flat 8, 399 Neasden Lane North, London, NW10 0BD

  Certificate of lawfulness for existing use of rear unit 8 as a self-contained flat.

  Received 2 Sep, published by the council 21 Sep 2026 Lawful development
• 26/2093 Awaiting decision

  17 Buller Road, London, NW10 5BS

  Certificate of lawfulness for proposed alterations to front, side and rear fenestrations including installation of ground floor side oriel window and rear timber door to dwellinghouse

  Received 18 Aug, published by the council 21 Sep 2026 Lawful development
• 26/1208 Granted

  50 Ballogie Avenue, London, NW10 1TA

  Certificate of lawfulness for proposed rear dormer extension, hip to gable roof extension, alteration to fenestration and installation of rooflights to the dwellinghouse

  Received 13 May, published by the council 25 Jul 2026 Lawful development