14A Fernside Avenue London NW7 3BD

1. 9 Sep 2025

   Received by Barnet

2. 10 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 4 November 2025, 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.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 8 Fernside Avenue London NW7 3BD

  26/2865/HSE Submitted 3 Aug 2026 7m away

  77% historically approved · decision due ~28 Sep

  Part single, part two storey side and rear extensions. Replacement of existing rear dormer window.

  Awaiting decision Householder Extension Loft or dormer +1 10 docs
  Domestic

• 8 Fernside Avenue London NW7 3BD

  26/1812/HSE Submitted 14 May 2026 34m away

  77% historically approved · decision due ~9 Jul

  Part single, part two storey side and rear extensions. Replacement of existing rear dormer window.

  Awaiting decision Householder Extension Loft or dormer +1 9 docs
  Domestic

• 14 Barnet Way London NW7 3BH

  25/5187/HSE Submitted 29 Dec 2025 135m away

  77% historically approved · decision due ~23 Feb

  Erection of a rear outbuilding following demolition of the existing garage

  Awaiting decision Householder Demolition 8 docs
  Small domestic

• 47 Fernside Avenue London NW7 3AX

  26/1515/HSE Submitted 23 Apr 2026 140m away

  77% historically approved · decision due ~3 Jul

  Single storey front/side extension to form porch entrance. New rear raised patio area with access steps to garden

  Awaiting decision Householder Extension 7 docs
  Small domestic

• 1 Ellesmere Avenue London NW7 3EX

  26/0403/HSE Submitted 3 Feb 2026 140m away

  77% historically approved · decision due ~1 Apr

  Conversion of the existing garage into habitable room, insertion of window to replace the garage door. First floor side extension. Changes to rear fenestration

  Awaiting decision Householder Extension Windows or glazing 7 docs
  Domestic

• 1 Ellesmere Avenue London NW7 3EX

  25/4727/HSE Submitted 26 Nov 2025 140m away

  Conversion of the existing garage into habitable room, insertion of window to replace the garage door. First floor side extension. Roof extension involving rear dormer window, 2no. front facing rooflights and 1no. side skylight

  Refused Householder Extension Loft or dormer +1 9 docs
  Domestic

• 26/1907/191 Decided

  8 Golders Manor Drive London NW11 9HT

  Use of the property as a self-contained residential unit at ground floor level and the first and second floors as a 4-bedroom, 4-person House in Multiple Occupation (Sui Generis) (AMENDED DESCRIPTION)

  21 May 2026 Lawful development
• 26/2059/192 Decided

  Low Ridge Rowley Lane Barnet EN5 3HS

  Erection of a rear outbuilding

  3 Jun 2026 Lawful development
• 26/2066/192 Decided

  355 Hendon Way London NW4 3NB

  Roof extension involving rear dormer window and 3no. front facing rooflights. Removal of chimney on rear elevation (AMENDED DESCRIPTION)

  3 Jun 2026 Lawful development
• 26/1663/192 Decided

  152 Deans Lane Edgware HA8 9NT

  Change of use from single family dwellinghouse (Class C3a) to supported living accommodation Class C3b)

  5 May 2026 Lawful development
• 26/2025/192 Decided

  18 Hale Drive London NW7 3DU

  Roof extension involving hip to gable, rear dormer window, 2no. front facing rooflights and new side gable window

  1 Jun 2026 Lawful development