32 Cornwall Avenue London N3 1LG

1. 14 Jul 2026

   Received by Barnet

2. 6 Aug 2026

   Validated

   Checked as complete and ready for consideration.

3. 7 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 1 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Barnet took a median of 42 days over the applications it decided in the last year.

This application is with Barnet for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

This page mirrors an entry on the statutory planning register that Barnet is required to keep. The published feed for this record does not state which type of application it is, which is common for older entries and for some council systems; the register entry on the council portal will say, alongside the case officer and any consultation dates.

Every planning application follows the same broad path: submission, validation, publicity, then a decision by officers or committee. Our guide to planning application types explains the common types and what each can approve.

• 39 Cornwall Avenue London N3 1LG

  26/3192/HSE Submitted 1 Sep 2026 0m away

  77% historically approved · decision due ~27 Oct

  New front porch

  Awaiting decision Householder Extension
  Small domestic

• First Floor Flat 33 Grove Avenue London N3 1QS

  26/0556/FUL Submitted 12 Feb 2026 32m away

  Change of use of the upper floor flat (Class C3) to a 3 bed House in Multiple Occupation (HMO) (Class C4). Associated refuse/recycling and cycle storage (AMENDED DESCRIPTION)

  Refused Full applications 15 docs

• 37 Cornwall Avenue London N3 1LG

  25/4558/FUL Submitted 14 Nov 2025 37m away

  Conversion of the existing dwelling into 2no. self-contained flats including single storey rear extension with green roof and parapet, front porch infill, first floor rear terrace area with obscure glazing, roof extension involving rear dormer window and 4no. front facing rooflights

  Refused Full applications New dwelling Extension +2 12 docs
  Small domestic

• 37 Cornwall Avenue London N3 1LG

  26/0945/HSE Submitted 12 Mar 2026 37m away

  Single storey rear extension following demolition of the existing sun room. Roof extension involving rear dormer windows and 4no. front facing rooflights

  Granted Householder Extension Loft or dormer +2 13 docs
  Small domestic

• 39 Cornwall Avenue London N3 1LG

  25/3818/HSE Submitted 17 Sep 2025 39m away

  77% historically approved · decision due ~12 Nov

  Single storey rear extension. Conversion of the existing garage into habitable room, insertion of window to replace the garage door

  Awaiting decision Householder Extension Windows or glazing 9 docs
  Small domestic

• 39 Cornwall Avenue London N3 1LG

  25/5142/192 Submitted 22 Dec 2025 44m away

  79% historically approved · decision due ~16 Feb

  Roof extension involving hip to gable, rear dormer window and 3no. front facing rooflights

  Awaiting decision Lawful development Extension Loft or dormer +1 7 docs