20 Cannon Lane, Pinner, Harrow, HA5 1HL

1. 29 Aug 2024

   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.

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

• 24 Cannon Lane, Pinner, Harrow, HA5 1HL

  PL/0920/26 Submitted 2 Apr 2026 0m away

  Decision due ~28 May

  Single and two storey side to rear extensions; attached garage; rear dormer; external alterations (Demolition of porch canopy, side extension, and detached garage)

  Status unknown Householder Extension Loft or dormer +1
  Small domestic

• 43 Cannon Lane, Pinner, Harrow, HA5 1HN

  PL/0170/26 Submitted 22 Jan 2026 68m away

  Decision due ~19 Mar

  Single storey rear extension: 4.20 metres deep, 3.00 metres maximum height and 3.00 metres high to the eaves

  Status unknown Prior approval Extension
  Small domestic

• 43 Cannon Lane, Pinner, Harrow, HA5 1HN

  PL/2307/25 Submitted 3 Sep 2025 68m away

  Decision due ~29 Oct

  Certificate of Lawful Development Proposed: Conversion of the existing hipped roof to a gable end; rear-facing dormer; installation of 3nos rooflights to front roofslope and the construction of a new front porch.

  Status unknown Lawful development Extension Loft or dormer
  Small domestic

• 13 Vale Croft, Pinner, Harrow, HA5 1HJ

  PL/3216/24 Submitted 6 Dec 2024 84m away

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

  Granted Prior approval Extension
  Small domestic

• Harrow Carpet Studio, 54 Cannon Lane, Pinner, Harrow, HA5 1HW

  P/1518/21/PRIOR Submitted 9 Apr 2021 140m away

  Change Of Use of rear part of ground floor from Retail (Class A1 (New Class E)) to one Studio flat (Class C3); External Alterations; (Prior Approval of Transport and Highways Impacts of the Development, Contamination, Flooding, the Desirability of the Change of Use, External Appearance and Adequate Light)

  Granted Prior approval 8 docs

• Cannon Newsagent, 58 Cannon Lane, Pinner, Harrow, HA5 1HW

  P/1491/21 Submitted 6 Apr 2021 140m away

  Display of one internally illuminated fascia sign and one internally illuminated hanging sign

  Granted Advertising 11 docs

• 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