9 Mallet Drive, Northolt, Harrow, UB5 4BE

1. 7 Apr 2025

   Received by Harrow

2. 2 Sep 2026

   Added to PlanIndex

Harrow granted permission, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 20 Mallet Drive, Northolt, Harrow, UB5 4BE

  PL/2463/25 Submitted 22 Sep 2025 0m away

  Conversion of Semi-Detached dwelling into Two Separate Dwellings (1x2 bed and 1x3 bed); provision of cycle parking and bin storage, subdivision of amenity space including new front porch to No. 20A and creation of a crossover

  Refused Full applications New dwelling Extension
  Small domestic

• 26 Doncaster Gardens, Northolt, Harrow, UB5 4BN

  P/1436/21 Submitted 6 Apr 2021 109m away

  Certificate of lawful development (proposed): Demolition of chimney stack

  Granted Lawful development Demolition 10 docs

• 206 The Heights, Northolt, Harrow, UB5 4BU

  PL/2777/25 Submitted 26 Oct 2025 154m away

  Single storey rear extension: 6.00 metres deep, 3.20 metres maximum height and 2.98 metres high to the eaves

  Refused Prior approval Extension
  Small domestic

• 206 The Heights, Northolt, Harrow, UB5 4BU

  PL/0043/26 Submitted 6 Jan 2026 154m away

  Decision due ~3 Mar

  Single storey side extension; single and two storey rear extension; external staircases to rear; external alterations (demolition of rear extension)

  Status unknown Householder Extension Demolition
  Small domestic

• 206 The Heights, Northolt, Harrow, UB5 4BU

  PL/0380/26 Submitted 11 Feb 2026 154m away

  Decision due ~8 Apr

  Single storey side to rear extension, First floor rear extension, Stairs to rear

  Status unknown Householder Extension
  Small domestic

• 206 The Heights, Northolt, Harrow, UB5 4BU

  PL/2770/25 Submitted 24 Oct 2025 154m away

  Single storey rear extension: 6.00 metres deep, 3.20 metres maximum height and 2.98 metres high to the eaves

  Refused Prior approval Extension
  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