42 Rosemont Avenue London N12 0BX

1. 14 May 2026

   Received by Barnet

2. 2 Jun 2026

   Validated

   Checked as complete and ready for consideration.

3. 28 Jul 2026

   Decision issued: Refuse

4. 16 Aug 2026

   Added to PlanIndex

The council refused this application for the reasons set out on the decision notice, which the council portal holds in full. Only the applicant can appeal a refusal; the time limit runs from the decision date and is shorter for householder schemes.

Refusal does not prevent a fresh attempt. Applicants often address the reasons for refusal and resubmit, so a refused scheme is not necessarily the end of proposals for the site.

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

• 42 Rosemont Avenue London N12 0BX

  25/5209/HSE Submitted 24 Dec 2025 10m away

  Addition of second floor level. New front cycle store and refuse/recycling area

  Refused Householder 21 docs
  Domestic

• 318 Ballards Lane London N12 0EY

  26/2031/FUL Submitted 1 Jun 2026 23m away

  Single storey rear extension (Part retrospective application)

  Refused Full applications Extension 46 docs
  Small domestic

• 318 Ballards Lane London N12 0EY

  26/3061/FUL Submitted 20 Aug 2026 32m away

  60% historically approved · decision due ~15 Oct

  Single storey rear extension (Part retrospective application)

  Awaiting decision Full applications Extension
  Small domestic

• 306 Ballards Lane London N12 0EY

  26/0505/FUL Submitted 9 Feb 2026 33m away

  60% historically approved · decision due ~7 Apr

  New shop front including new vehicular access to tyre garage

  Awaiting decision Full applications Windows or glazing 5 docs

• 34 Rosemont Avenue London N12 0BX

  26/2544/HSE Submitted 7 Jul 2026 55m away

  77% historically approved · decision due ~10 Sep

  Single storey rear extension with flat roof and 1no. rooflight following demolition of the existing conservatory. Reinstatement of the original entrance door and front window following removal of the existing porch. Changes to rear fenestration

  Awaiting decision Householder Extension Loft or dormer +2
  Small domestic

• 40 Rosemont Avenue London N12 0BX

  26/2980/192 Submitted 12 Aug 2026 55m away

  79% historically approved · decision due ~8 Oct

  Removal of the existing front boundary wall

  Awaiting decision
  Small domestic

• 26/3249/HSE Awaiting decision

  19 Rushdene Avenue Barnet EN4 8EN

  New front vehicular access and hardstanding to provide off-street parking space. New retaining wall following demolition of the existing wall and raised planted beds

  7 Sep 2026 Householder
• 26/3235/HSE Awaiting decision

  26 Mount Pleasant Barnet EN4 9HH

  Replace existing flat roof at ground floor rear elevation with pitched roof and 2no. rooflights

  4 Sep 2026 Householder
• 26/3222/HSE Awaiting decision

  46 Michleham Down London N12 7JN

  Single storey side/rear extension with 3no. rooflights following demolition of the existing storage/utility structure. Changes to fenestration

  3 Sep 2026 Householder
• 26/3219/HSE Awaiting decision

  53 Tudor Road Barnet EN5 5NW

  First floor rear extension with front and rear rooflights. Roof extension over existing garage

  2 Sep 2026 Householder
• 26/3210/HSE Awaiting decision

  47 Pattison Road London NW2 2HL

  New front vehicular access to provide off-street parking. Removal of existing gate and shed, alterations to the existing front boundary wall and installation of close board fencing panels.

  2 Sep 2026 Householder