21 Crown Street, Harrow Hill, Harrow, HA2 0HX

1. 26 Sep 2025

   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.

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

• 61 Crown Street, Harrow Hill, Harrow, HA2 0HX

  PL/1639/26 Submitted 15 Jun 2026 0m away

  Decision due ~10 Aug

  Certificate of lawful development (proposed): Conversion of garage into habitable room; replacement of garage door with window and replacement front door and window

  Status unknown Lawful development Windows or glazing

• Crown Court, 44 Crown Street, Harrow, HA2 0HS

  P/4633/18 Submitted 12 Oct 2018 33m away

  Replacement windows at rear (part retrospective)

  Granted Full applications Windows or glazing 16 docs

• 50 Crown Street, Harrow Hill, Harrow, HA2 0HR

  P/1930/21 Submitted 7 May 2021 34m away

  Non material amendment to prior approval application P/3062/20/PRIOR dated 21/10/2020 to allow installation of window to front elevation and alterations to internal layout

  Refused Amendments Windows or glazing 15 docs

• 56 Crown Street, Harrow Hill, Harrow, HA2 0HR

  PL/2264/25 Submitted 29 Aug 2025 34m away

  Harrow on the Hill Village Conservation Area Ash (rear garden): Crown Reduce by up to 30% by pruning to suitable growth points to produce rounded yet natural shape. All arisings to be stacked in corner of site. Remove large snapped out limb

  Granted Trees

• 31, Leigh Court Byron Hill Road, Harrow On The Hill, Harrow, HA2 0HZ

  PL/3033/25 Submitted 24 Nov 2025 65m away

  Byron Hill Conservation Area T1 Magnolia: Reduce and shape canopy by 1.5m in height and reduce lateral spread by 1.5m – 2m. Remove any vine and major deadwood T2 Laurel: Reduce and shape canopy by approximately 4-5m in height redirecting growth to third lateral stem growing towards the shed and evenly reduce lateral spread by approximately 3-4m in placed. Remove major deadwood T4 Elder: Leaning tree. Prune back to upright growth and away from the patio, reducing weight form tree. Reduce and shape remaining canopy by 2m height and 3-4m spread. Remove major deadwood T6 Laurel: Rear Garden, middle. Reduce and shape canopy back to previous points (approximately 1-2m)

  Granted Trees
  Small domestic

• 26, Leigh Court Byron Hill Road, Harrow On The Hill, Harrow, HA2 0HZ

  PL/3035/25 Submitted 24 Nov 2025 65m away

  T1: Eucalyptus (globulus) located on the lefthand side of the rear garden – request to Fell the tree as it is dominating the area it is situated in and is blocking out much of the natural light to the property. Fell to ground level and poison stump by way of ECO Plugs to inhibit re-growth.

  Granted Trees

• PL/1791/26 Status unknown

  MELTON HOUSE Sudbury Hill, Sudbury, Harrow, HA1 3ND

  Single storey rear glazed extension; single storey side extension; installation of additional windows to front elevation at first floor level; external alterations (demolition of conservatory)

  1 Jul 2026 Householder
• PL/1766/26 Status unknown

  17 Sandymount Avenue, Stanmore, Harrow, HA7 4UA

  Vehicle access

  29 Jun 2026 Householder
• PL/1764/26 Status unknown

  9A Elmwood Avenue, Kenton, Harrow, HA3 8AJ

  Two storey rear extension at lower ground floor and ground floor level

  29 Jun 2026 Householder
• PL/1763/26 Status unknown

  160 Welbeck Road, West Harrow, Harrow, HA2 0RX

  Single storey rear extension

  29 Jun 2026 Householder
• PL/1760/26 Status unknown

  23 Sancroft Road, Wealdstone, Harrow, HA3 7NX

  Single storey front extension incorporating porch; single and two storey side to rear extension; single storey rear extension; rooflight in front roof slope; external alterations

  29 Jun 2026 Householder