57 The Avenue, Harrow Weald, Harrow, HA3 7DB

1. 5 Mar 2025

   Received by Harrow

2. 2 Sep 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

• 57 The Avenue, Harrow Weald, Harrow, HA3 7DB

  PL/2193/24 Submitted 7 Aug 2024 0m away

  Certificate of Lawful Proposed Development: Alterations to roof to form end gable and rear dormer, installation of one roof light in front elevation and new window in end gable

  Refused Lawful development Loft or dormer Windows or glazing

• 38 The Avenue, Harrow Weald, Harrow, HA3 7DE

  PL/2546/25 Submitted 30 Sep 2025 34m away

  Decision due ~25 Nov

  Single storey rear extension; alterations to side facing ground floor windows; external alterations

  Status unknown Householder Extension Windows or glazing
  Small domestic

• 38 The Avenue, Harrow Weald, Harrow, HA3 7DE

  PL/2548/25 Submitted 30 Sep 2025 34m away

  Certificate of lawful development (proposed): Front porch

  Granted Lawful development Extension
  Small domestic

• 30 College Hill Road, Harrow Weald, Harrow, HA3 7HE

  PL/1671/26 Submitted 18 Jun 2026 78m away

  Decision due ~13 Aug

  Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 2.80 metres high to the eaves

  Status unknown Prior approval Extension
  Small domestic

• 30 College Hill Road, Harrow Weald, Harrow, HA3 7HE

  PL/1687/26 Submitted 18 Jun 2026 78m away

  Decision due ~13 Aug

  Alterations to roof to form gable ends and two rear dormers (one with juliette balcony); installation of five rooflights to front roofslope; external alterations

  Status unknown Full applications Loft or dormer

• 18 The Avenue, Harrow Weald, Harrow, HA3 7DF

  P/1960/19 Submitted 25 Apr 2019 108m away

  First floor side extension; pitched roof to existing single storey side extension

  Granted Householder Extension 19 docs
  Small domestic

• 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