21 Courtfield Avenue, Harrow, HA1 2JX

This site has had 2 applications since 2006: 2 approved, 0 refused.

• P/473/06/DFU Granted

  21 Courtfield Avenue, Harrow, HA1 2JX

  Single storey rear extension

  Decided 19 Apr 2006 Full applications

1. 20 Mar 2024

   Received by Harrow

2. 2 Aug 2026

   Added to PlanIndex

Harrow granted permission, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.

• 12 Courtfield Avenue, Harrow, HA1 2JX

  P/0484/08DFU Submitted 4 Feb 2008 0m away

  Single-storey rear extension (conservatory) to ground floor flat

  Granted Full applications Extension 14 docs
  Small domestic

• 27 Courtfield Avenue, Harrow, HA1 2JX

  PL/1323/26 Submitted 13 May 2026 0m away

  Decision due ~8 Jul

  Single and two storey rear extension; Alterations and extension to roof to form end gable and rear dormer with Juliette balcony; Two roof lights in front roof slope; Window in gable end (Demolition of rear extension)

  Status unknown Householder Extension Loft or dormer +2
  Domestic

• 16 Courtfield Avenue, Harrow, HA1 2JX

  P/2806/07 Submitted 23 Aug 2007 0m away

  Alterations to roof to form end gable & rear dormer; front porch; external alterations.

  Granted Full applications Extension Loft or dormer 42 docs
  Small domestic

• 27 Courtfield Avenue, Harrow, HA1 2JX

  PL/0353/26 Submitted 9 Feb 2026 0m away

  Decision due ~6 Apr

  Certificate of Lawful Development (Proposed): Alterations and extension to roof to form end gable; rear dormer with Juliette balcony; two rooflights in front roof slope; window in end gable

  Status unknown Lawful development Extension Loft or dormer +1

• 27 Courtfield Avenue, Harrow, HA1 2JX

  PL/0309/26 Submitted 4 Feb 2026 0m away

  Decision due ~1 Apr

  Single storey rear extension: 6.00 metres deep, 3.35 metres maximum height and 3.00 metres high to the eaves

  Status unknown Prior approval Extension
  Small domestic

• 46 Courtfield Avenue, Harrow, HA1 2JX

  P/0883/07 Submitted 22 Mar 2007 0m away

  Single storey side to rear extension

  Granted Full applications Extension 18 docs
  Small domestic

• PL/1797/26 Status unknown

  61 Uppingham Avenue, Stanmore, Harrow, HA7 2JB

  Single storey rear extension: 6.00 metres deep, 3.40 metres maximum height and 3.00 metres high to the eaves

  2 Jul 2026 Prior approval
• PL/1793/26 Status unknown

  36 Hinkler Road, Kenton, Harrow, HA3 9AU

  Single storey rear extension: 6.00 metres deep, 3.38 metres maximum height and 2.75 metres high to the eaves

  1 Jul 2026 Prior approval
• PL/1792/26 Status unknown

  3 Monro Gardens, Harrow Weald, Harrow, HA3 6HH

  Single storey rear extension: 6.50 metres deep, 3.20 metres maximum height and 3.00 metres high to the eaves

  1 Jul 2026 Prior approval
• PL/1794/26 Status unknown

  65 Dean Drive, Edgware, Stanmore, Harrow, HA7 1HB

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

  1 Jul 2026 Prior approval
• PL/1749/26 Status unknown

  22 Hazelwood Close, Harrow, HA2 6HD

  Single storey rear extension: 4.50 metres deep, 3.00 metres maximum height and 2.80 metres high to the eaves

  29 Jun 2026 Prior approval