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

1. 7 Mar 2018

   Received by Harrow

2. 3 Apr 2018

   Validated

   Checked as complete and ready for consideration.

3. 31 May 2018

   Decision issued: Grant

4. 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

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

  P/1960/19 Submitted 25 Apr 2019 0m away

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

  Granted Householder Extension 19 docs
  Small domestic

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

  P/3635/18/PRIOR Submitted 10 Aug 2018 0m away

  Single storey rear extension: extending 6 metres beyond the original rear wall 3.5 Metres maximum height 2.995 Metres high to the eaves

  Decided Householder Extension 18 docs
  Small domestic

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

  P/4659/19 Submitted 4 Nov 2019 0m away

  Single storey outbuilding in rear garden; external alterations (retrospective)

  Refused Householder 9 docs
  Small domestic

• 20a The Avenue, Harrow Weald, Harrow, HA3 7DF

  P/4660/19 Submitted 4 Nov 2019 0m away

  Single Storey Outbuilding At Rear For Ancillary Storage (Retrospective)

  Granted Householder 8 docs
  Small domestic

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

  P/0444/19 Submitted 30 Jan 2019 0m away

  Single storey front extension; first floor side to rear extension; two storey rear extension; front porch

  Refused Householder Extension 26 docs
  Small domestic

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

  P/3625/19 Submitted 16 Aug 2019 0m away

  Single storey outbuilding in rear garden; external alterations (retrospective)

  Refused Householder 8 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