503 High Road, Harrow, HA3 6HL

1. 8 Feb 2017

   Received by Harrow

2. 22 Feb 2017

   Validated

   Checked as complete and ready for consideration.

3. 5 Apr 2017

   Decision issued: Grant

4. 5 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 full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

• 483 High Road, Harrow Weald, Harrow, HA3 6HL

  P/4836/21 Submitted 9 Dec 2021 0m away

  CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Single storey rear extension (Following Established Prior Approval Ref: P/0496/19/PRIOR)

  Granted Lawful development Extension 12 docs
  Small domestic

• 483 High Road, Harrow Weald, Harrow, HA3 6HL

  P/4640/21 Submitted 23 Nov 2021 0m away

  Single storey front and side to rear extension; External alterations (Demolition of attached garage at side)

  Granted Householder Extension Demolition 26 docs
  Small domestic

• 515 High Road, Harrow Weald, Harrow, HA3 6HL

  P/4534/21 Submitted 15 Nov 2021 0m away

  Single storey outbuildings in rear garden (X 2)

  Granted Householder 16 docs
  Small domestic

• 511 High Road, Harrow, HA3 6HL

  P/2368/18 Submitted 31 May 2018 0m away

  Single storey front extension; conversion of garage into habitable room; external alterations

  Granted Householder Extension 12 docs
  Small domestic

• 511 High Road, Harrow, HA3 6HL

  P/2414/18/PRIOR Submitted 31 May 2018 0m away

  Single storey rear extension: extending 8 metres beyond the original rear wall 4 metres maximum height 3 metres high to the eaves

  Decided Householder Extension 7 docs
  Small domestic

• 487 High Road, Harrow Weald, Harrow, HA3 6HL

  P/0025/20 Submitted 3 Jan 2020 0m away

  Single storey front extension incorporating porch; two storey side to rear extension; single storey rear extension (demolition of garage and conservatory)

  Refused Householder Extension Demolition 15 docs
  Small domestic

• PL/1786/26 Status unknown

  23 Stuart Road, Wealdstone, Harrow, HA3 7RB

  Conversion of detached garage at rear to provide a single storey dwelling house ( 1 x 1 bed); Replace garage doors with door and window in front elevation; Replace door with window in side elevation; External alterations; Cycle and Refuse storage

  30 Jun 2026 Full applications
• PL/1784/26 Status unknown

  14 Treve Avenue, West Harrow, Harrow, HA1 4AJ

  Conversion of existing 6-bed 6-person HMO into 7-bed 8-person HMO with associated bin and cycle storage

  30 Jun 2026 Full applications
• PL/1777/26 Status unknown

  11 London Road, Harrow, HA1 3JJ

  Refurbishment and replacement of windows and door to the basement and ground floor front, side and rear elevations

  29 Jun 2026 Full applications
• PL/1743/26 Status unknown

  49 Kings Way, Harrow, HA1 1XT

  Single and two storey side extension; external alterations: Conversion of dwellinghouse (C3) into a 6 person HMO (C4); refuse / cycle storage (demolition of attached garage)

  25 Jun 2026 Full applications
• PL/1710/26 Status unknown

  4 Kenton Road, Kenton, Harrow, HA1 2BL

  Conversion of dwelling (C3) into house of multiple occupancy for up to 6 persons (Sui Generis)

  22 Jun 2026 Full applications