17 Elms Road, Harrow Weald, Harrow, HA3 6BB

1. 16 Mar 2025

   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.

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

• 23 Elms Road, Harrow Weald, Harrow, HA3 6BB

  PL/1149/26 Submitted 27 Apr 2026 0m away

  Decision due ~22 Jun

  Conversion of garage into habitable room with alterations to front elevation; alterations to single storey roofs at side and rear; rooflights in side and rear roof slopes; removal of chimney breast; external alterations

  Status unknown Householder Loft or dormer
  Small domestic

• 17 Elms Road, Harrow Weald, Harrow, HA3 6BB

  PL/1933/25 Submitted 22 Jul 2025 0m away

  Details pursuant to Condition 8 (Levels) attached to planning permission PL/0839/25 dated 21/05/2025 for Conversion of dwelling into four flats (1 x studio, 1 x 1 bed and 2 x 2 beds); single and two storey rear extension; alterations to roof to form gable ends and rear dormer; front porch; external alterations; vehicle access; separate amenity space; bin and cycle stores

  Granted Conditions New dwelling Extension +1
  Several homes

• 31 Elms Road, Harrow Weald, Harrow, HA3 6BB

  P/3229/18 Submitted 20 Jul 2018 0m away

  Alterations and extension to roof; two side dormers; installation of railing to first floor rear roof terrace; roof lantern in rear extension

  Granted Householder Extension Loft or dormer +1 31 docs
  Domestic

• 11 Elms Road, Harrow Weald, Harrow, HA3 6BB

  PL/0096/26 Submitted 14 Jan 2026 0m away

  Certificate of Lawful E xisting Development: Confirmation of the lawful use of the site as Care home (C2)

  Granted Lawful development

• 29 Elms Road, Harrow Weald, Harrow, HA3 6BB

  PL/3060/25 Submitted 25 Nov 2025 0m away

  Decision due ~20 Jan

  Variation of Condition 2 (approved plans) and Condition 3 (materials) attached to planning permission PL/0565/23 dated 1.7.2024 to allow changes to the approved plans and materials

  Status unknown Amendments

• 21 Elms Road, Harrow Weald, Harrow, HA3 6BB

  PL/1340/26 Submitted 14 May 2026 0m away

  Decision due ~9 Jul

  Single storey rear extension; conversion of garage to habitable room; external alterations

  Status unknown Householder 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