22 Thistledene Avenue, South Harrow, Harrow, HA2 9HL

1. 26 Feb 2026

   Received by Harrow

2. 12 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 23 April 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

The published feed does not show a live status for this application, which usually means the council register holds more recent detail than the copy PlanIndex receives.

The council portal linked on this page carries the authoritative version, including the documents, any consultation deadline and the decision once made. PlanIndex refreshes its copy of the register on a daily cycle.

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

• 22 Thistledene Avenue, South Harrow, Harrow, HA2 9HL

  PL/0505/26 Submitted 26 Feb 2026 0m away

  Decision due ~23 Apr

  Single and two storey rear extension (Demolition of rear extension)

  Status unknown Householder Extension Demolition
  Domestic

• 22 Thistledene Avenue, South Harrow, Harrow, HA2 9HL

  PL/1148/26 Submitted 27 Apr 2026 0m away

  Decision due ~22 Jun

  Single storey rear extension

  Status unknown Householder Extension
  Small domestic

• 231 Malvern Avenue, South Harrow, Harrow, HA2 9HF

  P/1420/21 Submitted 6 Apr 2021 71m away

  CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Alterations to roof to form end gable, rear dormer, insertion of two rooflights in front roofslope and window in side of end gable

  Granted Lawful development Loft or dormer Windows or glazing 12 docs

• 694 FIELD END ROAD EASTCOTE HA4 0QR

  80162/APP/2026/1807 Submitted 21 Jul 2026 123m away

  Erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4.00 metres, for which the maximum height would be 2.79 metres, and for which the height of the eaves would be 2.79 metres.

  Granted Full applications Extension 5 docs
  Small domestic

• 222 Malvern Avenue, South Harrow, Harrow, HA2 9HE

  PL/1732/26 Submitted 24 Jun 2026 142m away

  Decision due ~19 Aug

  Single storey rear extension: 6.00 metres deep, 3.14 metres maximum height and 3.00 metres high to the eaves

  Status unknown Prior approval Extension
  Small domestic

• 222 Malvern Avenue, South Harrow, Harrow, HA2 9HE

  PL/1735/26 Submitted 24 Jun 2026 142m away

  Decision due ~19 Aug

  Certificate of lawful development (proposed): Rear dormer; installation of rooflight in front roofslope

  Status unknown Lawful development Loft or dormer

• PL/1761/26 Status unknown

  1 Middle Road, Harrow On The Hill, Harrow, HA2 0HW

  Certificate of lawful development (proposed): Replacement of ground floor front bay window

  29 Jun 2026 Lawful development
• PL/1772/26 Status unknown

  114 Somervell Road, South Harrow, Harrow, HA2 8TT

  Certificate of Lawful Proposed Development: Demolition and replacement of first floor level and roof

  29 Jun 2026 Lawful development
• PL/1735/26 Status unknown

  222 Malvern Avenue, South Harrow, Harrow, HA2 9HE

  Certificate of lawful development (proposed): Rear dormer; installation of rooflight in front roofslope

  24 Jun 2026 Lawful development
• PL/1716/26 Status unknown

  59 Leamington Crescent, South Harrow, Harrow, HA2 9HH

  Certificate of Lawful Development (Proposed): Garden room with garden tools storage at rear (demolition of detached garage)

  22 Jun 2026 Lawful development
• PL/1696/26 Status unknown

  31 Chandos Road, Harrow, HA1 4QX

  Certificate of Lawful Development (Proposed): Alterations and extension to roof to form end gable; rear dormer; two rooflights in front roof slope; window in end gable

  22 Jun 2026 Lawful development