15 Coniston Avenue Oxford Oxfordshire OX3 0AN

This site has had 2 applications since 2025.

• 26/00638/FUL Awaiting decision

  15 Coniston Avenue Oxford Oxfordshire OX3 0AN

  Demolition of existing rear extension. Erection of a part single, part two-storey rear extension. Formation of a front porch. Alterations to fenestration.

  Submitted 13 Mar 2026 Full applications

1. 19 Dec 2025

   Received by Oxford

2. 9 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 13 February 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Oxford took a median of 37 days over the applications it decided in the last year.

This application is with Oxford for determination, against a statutory target of eight weeks. Over the last year Oxford decided prior approval applications in a median of 37 days. More in our guide to how long planning decisions take.

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.

• 15 Coniston Avenue Oxford Oxfordshire OX3 0AN

  26/00638/FUL Submitted 13 Mar 2026 0m away

  84% historically approved · decision due ~8 May

  Demolition of existing rear extension. Erection of a part single, part two-storey rear extension. Formation of a front porch. Alterations to fenestration.

  Awaiting decision Full applications Extension Demolition +1 11 docs
  Small domestic

• 17 Coniston Avenue Oxford OX3 0AN

  19/00703/FUL Submitted 17 Mar 2019 9m away

  Demolition of existing rear extension. Erection of single storey rear extension. Insertion of 1no. window to side elevation

  Refused Full applications Extension Demolition +1 15 docs
  Small domestic

• 50 Derwent Avenue Oxford Oxfordshire OX3 0AP

  26/01797/FUL Submitted 24 Jul 2026 57m 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 57m 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

• 30 Coniston Avenue Oxford Oxfordshire OX3 0AN

  26/01026/CPU Submitted 27 Apr 2026 69m away

  Application to certify that the proposed alterations to roof to form hip to gable, formation of 1no. rear dormer, insertion of 4no. rooflights to front roofslope and 1no. window to side elevation is lawful development.

  Refused Outline Loft or dormer Windows or glazing 20 docs

• 33 Coniston Avenue Oxford Oxfordshire OX3 0AN

  25/03054/FUL Submitted 18 Nov 2025 71m away

  Demolition of existing garage. Erection of a single storey rear extension. Alterations to roof to form hip to gable, formation of 1no. rear dormer and insertion of 3no. roof lights to front roofslope in association with a loft conversion.

  Granted Full applications Extension Loft or dormer +1 19 docs
  Small domestic

• 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