120 Headstone Lane, Harrow, HA2 6JN

1. 21 Jan 2026

   Received by Harrow

2. 12 Aug 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

• 120 Headstone Lane, Harrow, HA2 6JN

  PL/0812/26 Submitted 25 Mar 2026 0m away

  Decision due ~20 May

  Single storey side to rear extension; conversion of garage to habitable room with installation of window to front; external alterations (demolition of conservatory and shed)

  Status unknown Householder Extension Demolition +1
  Small domestic

• 120 Headstone Lane, Harrow, HA2 6JN

  PL/1513/26 Submitted 4 Jun 2026 0m away

  Decision due ~30 Jul

  Single and two storey side to rear extension; conversion of garage to habitable room; replacement of garage door with window

  Status unknown Householder Extension Windows or glazing
  Domestic

• 120 Headstone Lane, Harrow, HA2 6JN

  PL/3174/25 Submitted 8 Dec 2025 0m away

  Decision due ~2 Feb

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

  Status unknown Prior approval Extension
  Small domestic

• 26 Greenfield Way, North Harrow, Harrow, HA2 6HU

  PL/1272/26 Submitted 6 May 2026 67m away

  Decision due ~1 Jul

  Single Storey side to rear extension; external alterations (demolition of detached garage)

  Status unknown Householder Extension Demolition
  Small domestic

• 23 Manor Park Drive, North Harrow, Harrow, HA2 6HT

  PL/2291/25 Submitted 2 Sep 2025 120m away

  Decision due ~28 Oct

  Certificate of Lawful Development Proposed: Hip-to-gable roof alteration and rear domer. 3no windows to front and side elevations

  Status unknown Lawful development Loft or dormer Windows or glazing

• 11 Manor Park Drive, North Harrow, Harrow, HA2 6HT

  PL/1225/25 Submitted 8 May 2025 120m away

  Certificate of Lawful Proposed Development: Single storey outbuilding for use as a home gym, storage area, and office space.

  Granted Lawful development
  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