23 Derwent Avenue Oxford Oxfordshire OX3 0AR

1. 3 Sep 2025

   Received by Oxford

2. 8 Oct 2025

   Decision issued: Prior approval not required

3. 9 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.

Prior approval applications arise where permitted development rights already grant the principle of the work, such as larger home extensions, changes of use to housing or agricultural buildings. The council may only consider the specific matters set out in the rules, for example transport, flooding or appearance, and in many classes the work may proceed if the council does not respond within the deadline, commonly 56 days.

More on prior approval applications in our guide

• 23 Derwent Avenue Oxford Oxfordshire OX3 0AR

  25/02794/FUL Submitted 22 Oct 2025 0m away

  Demolition of existing garage to the rear. Erection of a single storey rear extension. Change of use of dwellinghouse (Use Class C3) to a House in Multiple Occupation (Use Class C4). Removal of 1no. window to side elevation. Alterations to roof to form hip to gable, and formation of 1no. rear dormer in association with a loft conversion. Provision of bin and bike storage.

  Granted Full applications Extension Loft or dormer +2 14 docs
  Small domestic

• 21 Derwent Avenue Oxford Oxfordshire OX3 0AR

  26/00070/FUL Submitted 12 Jan 2026 6m away

  Demolition of garage to rear and existing rear extension. Erection of a single storey rear extension. Change of use of dwellinghouse (Use Class C3) to a House in Multiple Occupation (Use Class C4). Alterations to fenestration. Provision of bin and bike store.

  Granted Full applications Extension Demolition +1 15 docs
  Small domestic

• 21 Derwent Avenue Oxford Oxfordshire OX3 0AR

  25/02697/H42 Submitted 14 Oct 2025 6m away

  Application for prior approval for the erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 6.00m, for which the maximum height would be 3.0m, and for which the height of the eaves would be 2.9m

  Granted Prior approval Extension 8 docs
  Small domestic

• 50 Derwent Avenue Oxford Oxfordshire OX3 0AP

  26/01797/FUL Submitted 24 Jul 2026 46m away

  84% historically approved · decision due ~18 Sep

  Erection of a single storey side extension.

  Awaiting decision Full applications Extension
  Small domestic

• 50 Derwent Avenue Oxford Oxfordshire OX3 0AP

  26/01200/FUL Submitted 18 May 2026 46m away

  84% historically approved · decision due ~13 Jul

  Erection of a single storey front, side and rear extension. Insertion of 3no. rooflights to rear elevation.

  Decided Full applications Extension Loft or dormer
  Small domestic

• 55 Copse Lane Oxford Oxfordshire OX3 0AT

  26/01816/FUL Submitted 27 Jul 2026 71m away

  84% historically approved · decision due ~22 Sep

  Erection of a part single, part two storey rear extension (amended description)

  Awaiting decision Full applications Extension

• 26/01080/H42 Decided

  42 Westbury Crescent Oxford Oxfordshire OX4 3RZ

  Application for prior approval for the erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 6.0m, for which the maximum height would be 3.0m, and for which the height of the eaves would be 3.0m

  1 May 2026 Prior approval
• 26/00857/H42 Withdrawn

  86 Morrell Avenue Oxford Oxfordshire OX4 1NA

  Application for prior approval for the erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 5.50m, for which the maximum height would be 2.90m, and for which the height of the eaves would be 2.50m.

  8 Apr 2026 Prior approval
• 26/00577/H42 Granted

  396 Marston Road Oxford Oxfordshire OX3 0JD

  Application for prior approval for the erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4.0m, for which the maximum height would be 4.0m, and for which the height of the eaves would be 3.0m.

  9 Mar 2026 Prior approval
• 26/00533/H42 Granted

  11 Peel Place Oxford Oxfordshire OX1 4UT

  Application for prior approval for the erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 6.0m, for which the maximum height would be 3.0m, and for which the height of the eaves would be 3.0m

  3 Mar 2026 Prior approval
• 26/00818/H42 Awaiting decision

  25 Helen Road Oxford Oxfordshire OX2 0DF

  Application for prior approval for the erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4.6m, for which the maximum height would be 3.4m, and for which the height of the eaves would be 3.00m.

  1 Apr 2026 Prior approval