18 Leamington Crescent, South Harrow, Harrow, HA2 9HQ

1. 13 Oct 2025

   Received by Harrow

2. 12 Aug 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

• 24 Leamington Crescent, South Harrow, Harrow, HA2 9HQ

  PL/1484/26 Submitted 3 Jun 2026 0m away

  Decision due ~29 Jul

  Single storey rear extension: 6.00 metres deep, 3.40 metres maximum height and 3.00 metres high to the eaves

  Status unknown Prior approval Extension
  Small domestic

• 78 Leamington Crescent, South Harrow, Harrow, HA2 9HQ

  PL/0687/26 Submitted 15 Mar 2026 0m away

  Decision due ~10 May

  Single storey rear extension: 4.50 metres deep, 3.00 metres maximum height and 2.90 metres high to the eaves

  Status unknown Prior approval Extension
  Small domestic

• 153 Malvern Avenue, South Harrow, Harrow, HA2 9HG

  P/3918/21 Submitted 23 Sep 2021 57m away

  Outbuilding at rear for use as storage / office / gym (retrospective)

  Granted Householder 13 docs
  Small domestic

• 199 Malvern Avenue, South Harrow, Harrow, HA2 9HG

  PL/0077/26 Submitted 10 Jan 2026 57m away

  Decision due ~7 Mar

  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

  Status unknown Lawful development Extension Loft or dormer +1

• 199 Malvern Avenue, South Harrow, Harrow, HA2 9HG

  PL/0047/26 Submitted 10 Jan 2026 57m away

  Decision due ~7 Mar

  Single storey rear extension: 6.00 metres deep, 3.20 metres maximum height and 3.00 metres high to the eaves

  Status unknown Prior approval Extension
  Small domestic

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

  PL/1716/26 Submitted 22 Jun 2026 102m away

  Decision due ~17 Aug

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

  Status unknown Lawful development Demolition

• 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