12 Chestnut Drive, Pinner, Harrow, HA5 1LY

1. 5 Mar 2026

   Received by Harrow

2. 12 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 30 April 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, which usually means the council register holds more recent detail than the copy PlanIndex receives.

The council portal linked on this page carries the authoritative version, including the documents, any consultation deadline and the decision once made. PlanIndex refreshes its copy of the register on a daily cycle.

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

• 8 Chestnut Drive, Pinner, Harrow, HA5 1LY

  PL/1037/24 Submitted 15 Apr 2024 0m away

  Single storey rear extension: 5.00 metres deep, 3.00 metres maximum height and 3.00 metres high to the eaves

  Granted Prior approval Extension
  Small domestic

• 69 Chestnut Drive, Pinner, Harrow, HA5 1LX

  PL/1667/26 Submitted 17 Jun 2026 48m away

  Decision due ~12 Aug

  Single and first floor rear extensions; external alterations

  Status unknown Householder Extension
  Domestic

• 69 Chestnut Drive, Pinner, Harrow, HA5 1LX

  PL/1399/26 Submitted 21 May 2026 48m away

  Decision due ~16 Jul

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

  Status unknown Prior approval Extension
  Small domestic

• 18 Lulworth Drive, Rayners Lane, Pinner, Harrow, HA5 1NE

  PL/0226/25 Submitted 30 Jan 2025 58m away

  Single storey rear extension (Demolition of rear extension)

  Granted Householder Extension Demolition
  Small domestic

• 86 Cannonbury Avenue, Pinner, Harrow, HA5 1TT

  PL/0361/25 Submitted 13 Feb 2025 86m away

  Conversion of garage to habitable room, Replace garage door with window in front elevation, Alterations to roof of garage to raise height, Single storey rear extension, Raised patio to rear, External alterations

  Granted Householder Extension Windows or glazing
  Small domestic

• 126 Cannonbury Avenue, Pinner, Harrow, HA5 1TT

  PL/0213/26 Submitted 26 Jan 2026 86m away

  Decision due ~23 Mar

  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

• PL/1791/26 Status unknown

  MELTON HOUSE Sudbury Hill, Sudbury, Harrow, HA1 3ND

  Single storey rear glazed extension; single storey side extension; installation of additional windows to front elevation at first floor level; external alterations (demolition of conservatory)

  1 Jul 2026 Householder
• PL/1766/26 Status unknown

  17 Sandymount Avenue, Stanmore, Harrow, HA7 4UA

  Vehicle access

  29 Jun 2026 Householder
• PL/1764/26 Status unknown

  9A Elmwood Avenue, Kenton, Harrow, HA3 8AJ

  Two storey rear extension at lower ground floor and ground floor level

  29 Jun 2026 Householder
• PL/1763/26 Status unknown

  160 Welbeck Road, West Harrow, Harrow, HA2 0RX

  Single storey rear extension

  29 Jun 2026 Householder
• PL/1760/26 Status unknown

  23 Sancroft Road, Wealdstone, Harrow, HA3 7NX

  Single storey front extension incorporating porch; single and two storey side to rear extension; single storey rear extension; rooflight in front roof slope; external alterations

  29 Jun 2026 Householder