1 Carlyon Avenue, Harrow, HA2 8SU

1. 11 Dec 2009

   Received by Harrow

2. 1 Apr 2010

   Validated

   Checked as complete and ready for consideration.

3. 26 May 2010

   Decision issued: Grant

4. 26 Jul 2026

   Added to PlanIndex

Harrow granted permission on 26 May 2010, 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.

• 5 Carlyon Avenue, Harrow, HA2 8SU

  P/0859/18 Submitted 1 Mar 2018 50 yards away

  Certificate of lawful development (proposed): alterations to roof to form end gable enlargement of existing rear dormer and window in side

  Granted Lawful development Loft or dormer Windows or glazing 10 docs

• 23 Carlyon Avenue, Harrow, HA2 8SU

  WEST/813/02/FUL Submitted 5 Aug 2002 50 yards away

  Single & two storey side & rear single storey front extension

  Granted Full applications Extension
  Small domestic

• 7 Carlyon Avenue, South Harrow, Harrow, HA2 8SU

  P/2633/21 Submitted 24 Jun 2021 50 yards away

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

  Granted Lawful development Loft or dormer Windows or glazing 10 docs

• 7 Carlyon Avenue, South Harrow, Harrow, HA2 8SU

  P/2636/21 Submitted 24 Jun 2021 50 yards away

  Single storey front extension incorporating front porch and garage; single storey side to rear extension; external alterations (demolition of side to rear extension)

  Granted Householder Extension Demolition 15 docs
  Small domestic

• 21 Carlyon Avenue, Harrow, HA2 8SU

  WEST/1090/01/FUL Submitted 11 Dec 2001 50 yards away

  Part single part two storey side to rear extension

  Granted Full applications Extension

• 11 Carlyon Avenue, Harrow, HA2 8SU

  WEST/420/01/FUL Submitted 16 May 2001 50 yards away

  Part single/part two storey rear extension two storey side extension and rear dormer

  Granted Full applications Extension 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

  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