12 Holyrood Avenue, Harrow, HA2 8TP

1. 30 Apr 2026

   Received by Harrow

2. 12 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 25 June 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; the register on Harrow's own portal holds the authoritative version.

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.

• 41 Warwick Avenue, South Harrow, Harrow, HA2 8RE

  PL/1159/26 Submitted 28 Apr 2026 150 yards away

  Decision due ~23 Jun

  CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Alterations and extension to roof to form end gable; rear dormer; three rooflights in front roof slope; front porch; single-storey rear extension (Following Established Prior Approval Ref: PL/0595/26) Detached outbuilding at rear garden for use as gym/home office/storage (demolition of detached garage)

  Status unknown Lawful development Extension Loft or dormer +1
  Small domestic

• 53 Warwick Avenue, Harrow, HA2 8RE

  P/3816/08 Submitted 20 Nov 2008 150 yards away

  Single storey front side and rear extensions

  Granted Full applications Extension 28 docs
  Small domestic

• 41 Warwick Avenue, South Harrow, Harrow, HA2 8RE

  PL/0595/26 Submitted 7 Mar 2026 150 yards away

  Decision due ~2 May

  Single-storey rear extension: 6.00 metres deep, 3.15 metres maximum height and 3.00 metres high to the eaves

  Status unknown Prior approval Extension
  Small domestic

• 793 Field End Road, Ruislip, Hillingdon, HA4 0QL

  WEST/508/01/CON Submitted 8 Jun 2001 150 yards away

  Continued use as take-away (class a3) on ground floor

  Granted

• 777A Field End Road, Ruislip, Hillingdon, HA4 0QL

  P/2088/05/DFU Submitted 16 Aug 2005 150 yards away

  Change of use from estate agent (class a2) to take-away (class a5)

  Granted Full applications

• UNIT 2 RUISLIP RETAIL PARK VICTORIA ROAD RUISLIP HA4 0QE

  43510/APP/2026/234 Submitted 27 Jan 2026 200 yards away

  Installation of new plant and equipment.

  Granted Full applications 9 docs

• 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

  Received 29 Jun, published by the council 12 Aug 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

  Received 29 Jun, published by the council 12 Aug 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

  Received 24 Jun, published by the council 12 Aug 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)

  Received 22 Jun, published by the council 12 Aug 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

  Received 22 Jun, published by the council 12 Aug 2026 Lawful development