4 Mount Avenue Southall UB1 2LH

This site has had 4 applications since 2026: 2 approved, 2 refused.

• 262197PALHE Granted

  4 Mount Avenue Southall UB1 2LH

  Single storey (Max 6m deep and Max 3m high) rear extension (42 days Prior Notification Process)

  Decided 10 Jul 2026 Prior approval
• 260699HH Refused

  4 Mount Avenue Southall UB1 2LH

  Single storey rear and side extension (following demolition of existing rear extension)

  Decided 14 Apr 2026 Householder
• 260700CPL Refused

  4 Mount Avenue Southall UB1 2LH

  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)

  Decided 10 Apr 2026 Lawful development

1. 30 May 2026

   Received by Old Oak and Park Royal Development Corporation

2. 27 Jul 2026

   Added to PlanIndex

3. 21 Aug 2026

   Decision issued: Permitted Development

Old Oak and Park Royal Development Corporation granted permission on 21 August 2026, 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.

• 4 Mount Avenue Southall UB1 2LH

  262197PALHE Submitted 30 May 2026 50 yards away

  Single storey (Max 6m deep and Max 3m high) rear extension (42 days Prior Notification Process)

  Granted Prior approval Extension 5 docs
  Small domestic

• 4 Mount Avenue Southall UB1 2LH

  262196CPL Submitted 30 May 2026 50 yards away

  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)

  Granted Extension Loft or dormer 5 docs

• 4 Mount Avenue Southall UB1 2LH

  262197PALHE Submitted 30 May 2026 50 yards away

  Single storey (Max 6m deep and Max 3m high) rear extension (42 days Prior Notification Process)

  Awaiting decision Extension 5 docs
  Small domestic

• 42 Mount Avenue Southall UB1 2LH

  243347HH Submitted 2 Sep 2024 50 yards away

  Single rear and side extension.

  Granted Householder Extension 13 docs
  Domestic

• 42 Mount Avenue Southall UB1 2LH

  243347HH Submitted 2 Sep 2024 50 yards away

  Single rear and side extension.

  Granted Householder Extension 13 docs
  Domestic

• 15 Allenby Road Southall UB1 2EU

  260691CPL Submitted 18 Feb 2026 50 yards away

  Rear roof extension incorporating a flat roof rear dormer; and installation of three roof lights to front roofslope (Lawful Development Certificate for a Proposed Development)

  Granted Lawful development Extension Loft or dormer 6 docs

• 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