5 Carlyon Avenue, Harrow, HA2 8SU

1. 1 Mar 2018

   Received by Harrow

2. 22 Mar 2018

   Validated

   Checked as complete and ready for consideration.

3. 17 May 2018

   Decision issued: Grant

4. 26 Jul 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

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

• 1 Carlyon Avenue, Harrow, HA2 8SU

  P/2896/09 Submitted 11 Dec 2009 0m away

  Certificate of lawful proposed development: demolition of part of existing rear extension; new single storey rear infill extension

  Granted Lawful development Extension Demolition 11 docs
  Small domestic

• 23 Carlyon Avenue, Harrow, HA2 8SU

  WEST/813/02/FUL Submitted 5 Aug 2002 0m 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 0m 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 0m 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 0m 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 0m 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

  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