14 Walfield Avenue London N20 9PR

1. 27 Nov 2025

   Received by Barnet

2. 2 Dec 2025

   Validated

   Checked as complete and ready for consideration.

3. 22 Jan 2026

   Decision issued: Lawful

4. 10 Aug 2026

   Added to PlanIndex

The council has decided this application; the published outcome sits in the record above and the decision notice on the council portal carries the detail, including any conditions.

If permission was granted, work must normally begin within three years of the decision. If it was refused, the applicant can appeal within the statutory time limit or submit a revised scheme.

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

• 14 Walfield Avenue London N20 9PR

  25/4817/PNH Submitted 27 Nov 2025 0m away

  Ground floor single storey rear extension projecting 4m from existing rear wall and 3m in height. Demolition of existing garage.

  Granted Prior approval Extension Demolition 6 docs
  Small domestic

• 21 Walfield Avenue London N20 9PS

  25/3858/PNH Submitted 18 Sep 2025 53m away

  57% historically approved · decision due ~14 Nov

  Single storey rear extension with a proposed depth of 5.00m, maximum height of 3.70m and eaves height of 3.00m.

  Awaiting decision Prior approval Extension 3 docs
  Small domestic

• Outside 47 Walfield Avenue London N20 9PS

  25/4407/LIC Submitted 3 Nov 2025 76m away

  Installation of 1no. 9m wooden pole

  Withdrawn 2 docs

• Outside 47 Walfield Avenue London N20 9PS

  25/4234/LIC Submitted 22 Oct 2025 80m away

  79% historically approved · decision due ~17 Dec

  Installation of 1no. 9m wooden pole

  Awaiting decision

• 1515 High Road London N20 9PJ

  25/4321/PNH Submitted 29 Oct 2025 110m away

  Single storey L-shaped rear extension with proposed depths of 3.0 metres and 4.85 metres, maximum height of 3.0 metres and eaves height of 2.90 metres, following demolition of existing conservatory and garage.

  Granted Prior approval Extension Demolition 16 docs
  Small domestic

• 1515 High Road London N20 9PJ

  25/4919/192 Submitted 8 Dec 2025 111m away

  79% historically approved · decision due ~4 Feb

  Single storey rear extension with 1no. rooflight and new patio area following demolition of existing conservatory and garage

  Awaiting decision Lawful development Extension Loft or dormer +1 14 docs
  Small 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