12 Hartland Road, London, NW6 6BJ

1. 24 Nov 2025

   Received by Brent

2. 12 Jan 2026

   Decision issued: Certificate of Lawfulness - Granted

3. 11 Aug 2026

   Added to PlanIndex

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.

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

• 12 Hartland Road, London, NW6 6BJ

  25/2807 Submitted 6 Oct 2025 0m away

  Certificate of lawfulness for proposed rear dormer window with Juliet balcony, rear outrigger extension and 3 front rooflights to dwellinghouse.

  Refused Lawful development Extension Loft or dormer +1 4 docs
  Domestic

• 12 Hartland Road, London, NW6 6BJ

  25/2811 Submitted 6 Oct 2025 0m away

  Proposed single storey side infill extension with 4x rooflights, replacement of first floor window on side elevation, alteration to ground floor terrace doors of the dwellinghouse

  Granted Householder Extension Loft or dormer +1 6 docs
  Small domestic

• 10B Hartland Road, London, NW6 6BJ

  20/3285 Submitted 13 Oct 2020 0m away

  Enlargement of existing rear dormer to first floor flat

  Granted Full applications Loft or dormer 7 docs

• 18 Hartland Road, London, NW6 6BJ

  26/0654 Submitted 16 Mar 2026 0m away

  Certificate of lawfulness for proposed rear dormer extension with Juliet balcony and dormer extension to rear outrigger, with two front rooflights to dwellinghouse

  Granted Lawful development Extension Loft or dormer 13 docs
  Domestic

• 8B Hartland Road, London, NW6 6BJ

  23/0403 Submitted 6 Feb 2023 0m away

  Proposed loft conversion with rear dormer window and 2x front facing rooflights to first floor flat

  Granted Full applications Loft or dormer Windows or glazing 8 docs

• 30 Hartland Road, London, NW6 6BJ

  20/4288 Submitted 28 Dec 2020 0m away

  Certificate of lawfulness for proposed 2nd floor roof extension over existing rear outrigger to dwellinghouse

  Granted Lawful development Extension 5 docs
  Domestic

• 26/0783 Granted

  3 Hamilton Road, London, NW10 1NU

  Certificate of lawfulness for existing single-storey rear extension to dwellinghouse

  26 Mar 2026 Lawful development
• 26/1946 Awaiting decision

  120 Gladstone Park Gardens, London, NW2 6RL

  Certificate of lawfulness for proposed rear dormer extension with Juliet balcony, hip to gable roof extension, installation of 1x window to side elevation and 2x front rooflights to dwellinghouse.

  30 Jul 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

  13 May 2026 Lawful development
• 26/1015 Refused

  5 Midholm, Wembley, HA9 9LJ

  Certificate of lawfulness for proposed installation of solar panels to the side and rear roofslope of the dwellinghouse.

  23 Apr 2026 Lawful development
• 26/1176 Refused

  47 Barn Rise, Wembley, HA9 9NH

  Certificate of lawfulness for proposed single storey outbuilding in rear garden of the dwellinghouse.

  11 May 2026 Lawful development