29 Montgomery Road Chiswick W4 5LZ

1. 31 Oct 2025

   Received by Old Oak and Park Royal Development Corporation

2. 23 Dec 2025

   Decision issued: Permitted Development

3. 10 Aug 2026

   Added to PlanIndex

Old Oak and Park Royal Development Corporation granted permission on 23 December 2025, 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.

• 29 Montgomery Road Chiswick W4 5LZ

  254157CPL Submitted 31 Oct 2025 50 yards away

  Single storey detached rear garden outbuilding for ancillary use to existing dwellinghouse (Lawful Development Certificate for a Proposed Development)

  Granted Lawful development 5 docs
  Small domestic

• 12 Montgomery Road Chiswick W4 5LZ

  263326HH Submitted 3 Sep 2026 50 yards away

  88% historically approved · decision due ~29 Oct

  Single storey side extension with a pitched roof, incorporating four rooflights and garden doors to the rear elevation.

  Awaiting decision Householder Extension Loft or dormer 11 docs
  Small domestic

• Ground Floor Flat 50 Fairlawn Grove Chiswick W4 5EH

  194803FUL Submitted 8 Nov 2019 50 yards away

  Single storey rear extension.

  Granted Full applications Extension 18 docs
  Small domestic

• 28 Montgomery Road Chiswick W4 5LZ

  243872HH Submitted 8 Oct 2024 50 yards away

  First floor rear extension

  Granted Householder Extension 9 docs
  Domestic

• 28 Montgomery Road Chiswick W4 5LZ

  243872HH Submitted 8 Oct 2024 50 yards away

  First floor rear extension

  Granted Householder Extension 9 docs
  Domestic

• 29 Bollo Lane Chiswick London W4 5LR

  194615HH Submitted 29 Oct 2019 100 yards away

  Single storey rear extension (following demolition of existing rear addition)

  Granted Householder Extension Demolition 21 docs
  Small domestic

• 263142CPL Granted

  42 Gloucester Road Acton W3 8PD

  Roof extension to rear (main) roof slope; part rear roof extension to rear outrigger roof slope and installation of two roof lights to front roofslope (Lawful Development Certificate for a Proposed Development)

  Received 18 Aug, published by the council 12 Oct 2026 Lawful development
• 263690CPL Awaiting decision

  133 Trinity Road Southall UB1 1ES

  Rear roof extension, and installation of three roof lights to front roofslope (Lawful Development Certificate for a Proposed Development)

  Received 6 Oct, published by the council 12 Oct 2026 Lawful development
• 262683CPE Granted

  1 Speldhurst Road Chiswick W4 1BX

  Continuous use of conversion of the roof space to provide additional habitable accommodation, installation of rooflights to the front roof slope and a rear dormer and construction of a single-storey rear extension. External materials to match the existing dwelling (Lawful Development Certificate for an Existing Development)

  Received 7 Jul, published by the council 3 Aug 2026 Lawful development
• 254066CPE Refused

  37 Robin Hood Way Greenford UB6 7QN

  Use of ground floor flat and first/second floor flat (Use Class C3) as 2 x House in Multiple Occupation (Use Class C4) (Certificate of Lawfulness for an Existing Use)

  Received 24 Oct, published by the council 3 Aug 2026 Lawful development
• 262883CPL Granted

  90 Church Road Hanwell W7 3BE

  Rear roof extension (following removal of chimney); installation of two rooflight to front roofslope (Lawful Development Certificate for a Proposed Development)

  Received 24 Jul, published by the council 10 Sep 2026 Lawful development