15A Woodside Avenue London N12 8AN

1. 24 Feb 2026

   Received by Barnet

2. 10 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 21 April 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 43 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

• Nansen Village 21 Woodside Avenue London N12 8AQ

  TPP/0120/26 Submitted 27 Feb 2026 64m away

  86% historically approved · decision due ~24 Apr

  1 x London Plane (applicants ref. T26) - Reduce crown spread to the north by approx 4 metres and reduce height by 2 metres to improve overall crown shape and reduce chance of breakout. Standing in G7 of Tree Preservation Order. 1 x Robina (applicants ref. T75) - Remove major dead wood. Standing in G7 of Tree Preservation Order.

  Awaiting decision Trees 4 docs

• 37-45 And 48-50 Nansen Village 21 Woodside Avenue Nansen Village London N12 8RW

  26/2918/FUL Submitted 6 Aug 2026 97m away

  60% historically approved · decision due ~1 Oct

  Alterations to existing roof including the raising of the ridge height, new ridge tile, fascia/soffits/eaves boards, lead flashing and rainwater goods to all properties

  Awaiting decision Full applications Roofing 12 docs

• Aldwick Court Sonia Gardens London N12 8BB

  TPP/0740/25 Submitted 5 Nov 2025 104m away

  1 x Sycamore - Reduce overall crown volume by approximately 5 metres (30%) to alleviate mechanical stress and improve balance. Undertake major thinning to reduce wind loading and improve light penetration by 15%. Remove all major dead wood throughout the crown to reduce risk of branch failure. Standing in Group G126 of Tree Preservation Order (amended description)

  Granted Trees 7 docs

• Aldwick Court Sonia Gardens London N12 8BB

  TPP/0789/25 Submitted 21 Nov 2025 105m away

  1 x Sycamore (applicants ref. T4) - Reduce lateral growth by 3 metres to clear building. Standing in Group G126 of Tree Preservation Order.

  Granted Trees 13 docs

• Aldwick Court Sonia Gardens London N12 8BB

  TPP/0619/25 Submitted 25 Sep 2025 105m away

  86% historically approved · decision due ~20 Nov

  1 x Sycamore (applicants ref. T4) - Reduce lateral growth by 3 metres to clear building. Standing in Group G126 of Tree Preservation Order.

  Awaiting decision Trees 4 docs

• 24 To 25 Woodside Grange Road London N12 8SP

  26/0343/FUL Submitted 29 Jan 2026 137m away

  60% historically approved · decision due ~26 Mar

  Alterations to existing roof including the raising of the ridge height, new ridge tile, fascia/soffits/eaves boards, lead flashing and rainwater goods to both properties

  Awaiting decision Full applications Roofing 15 docs

• 26/2679/192 Decided

  21 Myddelton Park London N20 0JH

  Single storey rear extension and increase in ridge height of existing rear outrigger (Amended description).

  20 Jul 2026 Lawful development
• 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