21 Walton Road, Harrow, HA1 4UX

This site has had 10 applications since 2022: 3 approved, 6 refused.

• P/0281/23 Granted

  21 Walton Road, Harrow, HA1 4UX

  Single storey rear extension; external alterations (demolition of rear extension)

  Decided 22 Mar 2023 Householder
• P/0273/23 Granted

  21 Walton Road, Harrow, HA1 4UX

  CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Single storey rear extension; outbuilding at rear (demolition of rear extension)

  Decided 21 Mar 2023 Lawful development
• P/3528/22/PRIOR Refused

  21 Walton Road, Harrow, HA1 4UX

  Single storey rear extension: 5.00 metres deep, 3.00 metres maximum height and 3.00 metres high to the eaves

  Decided 18 Nov 2022 Prior approval
• P/3526/22/PRIOR Refused

  21 Walton Road, Harrow, HA1 4UX

  Single storey rear extension: 4.50 metres deep, 3.00 metres maximum height and 2.32 metres high to the eaves

  Decided 18 Nov 2022 Prior approval
• P/3527/22/PRIOR Refused

  21 Walton Road, Harrow, HA1 4UX

  Single storey rear extension: 5.50 metres deep, 3.00 metres maximum height and 2.32 metres high to the eaves

  Decided 18 Nov 2022 Prior approval
• P/2959/22/PRIOR Refused

  21 Walton Road, Harrow, HA1 4UX

  Single storey rear extension: 5.00 metres deep, 3.00 metres maximum height and 2.50 metres high to the eaves

  Decided 23 Sep 2022 Prior approval
• P/2891/22/PRIOR Refused

  21 Walton Road, Harrow, HA1 4UX

  Single storey rear extension: 4.00 metres deep, 3.00 metres maximum height and 2.50 metres high to the eaves

  Decided 16 Sep 2022 Prior approval
• P/2278/22/PRIOR Refused

  21 Walton Road, Harrow, HA1 4UX

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

  Decided 27 Jul 2022 Prior approval
• P/2276/22 Granted

  21 Walton Road, Harrow, HA1 4UX

  CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Alterations to roof; rear dormer; three rooflights in front roofslope

  Decided 10 Aug 2022 Lawful development

1. 5 May 2026

   Received by Harrow

2. 2 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 30 June 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

The published feed does not show a live status for this application; the register on Harrow's own portal holds the authoritative version.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• 7 Walton Road, Harrow, HA1 4UX

  P/5386/18 Submitted 4 Dec 2018 0m away

  Certificate Of Lawful Development (Proposed): Single Storey Rear Extension (Following established prior approval for application P/4324/18/PRIOR)

  Granted Lawful development Extension 8 docs
  Small domestic

• 17 Walton Road, Harrow, HA1 4UX

  P/0958/07 Submitted 30 Mar 2007 0m away

  Demolition of existing attached shed and conservatory and erection of single storey rear extension to end terrace dwellinghouse

  Granted Lawful development Extension Demolition 14 docs
  Small domestic

• 7 Walton Road, Harrow, HA1 4UX

  P/4324/18/PRIOR Submitted 25 Sep 2018 0m away

  Single storey rear extension extending 6 metres beyond the original rear wall 3.4 Metres maximum height 3 metres high to the eaves

  Decided Householder Extension 5 docs
  Small domestic

• 27 Walton Road, Harrow, HA1 4UX

  HA\2006\ENQ\01059 Submitted 21 Sep 2006 0m away

  Porch extension outside of permitted development

  Withdrawn Outline Extension
  Small domestic

• 7 Walton Road, Harrow, HA1 4UX

  P/2165/06 Submitted 31 Jul 2006 0m away

  Single storey rear extension

  Granted Full applications Extension 12 docs
  Small domestic

• 27 Walton Road, Harrow, HA1 4UX

  P/3167/06 Submitted 11 Jul 2006 0m away

  Single storey front extension (porch)

  Granted Full applications Extension 9 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