170 The Mall, Harrow, HA3 9TH

1. 4 Dec 2019

   Received by Brent

2. 24 Dec 2019

   Decision issued: Certificate of Lawfulness - Granted

3. 10 Sep 2026

   Added to PlanIndex

Brent granted permission on 24 December 2019, 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.

• 148 The Mall, Harrow, HA3 9TH

  21/0080 Submitted 8 Jan 2021 50 yards away

  Certificate of lawfulness for proposed single storey rear extension to dwellinghouse.

  Granted Lawful development Extension 4 docs
  Small domestic

• 150 The Mall, Harrow, HA3 9TH

  21/0728 Submitted 26 Feb 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 6 docs
  Small domestic

• 150 The Mall, Harrow, HA3 9TH

  21/0438 Submitted 7 Feb 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 - 2.75m

  Refused Prior approval Extension 5 docs
  Small domestic

• 148 The Mall, Harrow, HA3 9TH

  20/3949 Submitted 1 Dec 2020 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 - 2.99m

  Granted Prior approval Extension 4 docs
  Small domestic

• 34 Dorchester Way, Harrow, HA3 9RF

  25/3314 Submitted 27 Nov 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 - 3.75m Eaves height - 3m

  Granted Prior approval Extension 3 docs
  Small domestic

• 4 The Garth, Harrow, HA3 9TQ

  20/3078 Submitted 28 Sep 2020 100 yards away

  Proposed erection of part two storey part single storey side extension, single storey rear extension, single storey front extension and new front porch with double entrance doors, loft conversion with rear dormer and juliet balcony, replacement fenestration at first floor level to the rear to include juliet balcony to dwellinghouse

  Refused Householder Extension Loft or dormer +1 20 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