19 Avondale Avenue London N12 8EP

1. 16 Feb 2026

   Received by Barnet

2. 17 Feb 2026

   Validated

   Checked as complete and ready for consideration.

3. 13 Apr 2026

   Decision issued: Lawful

4. 10 Aug 2026

   Added to PlanIndex

Barnet granted permission on 13 April 2026, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 33D Holden Road London N12 8HS

  26/2142/FUL Submitted 9 Jun 2026 100 yards away

  63% historically approved · decision due ~10 Aug

  Enlargement of existing rear and side dormers with installation of juliette balconies with obscured balustrades

  Awaiting decision Full applications Loft or dormer 15 docs

• 115 Nether Street London N12 8AB

  21/5167/FUL Submitted 27 Sep 2021 150 yards away

  Conversion of existing property into 3no self-contained flats. Insertion of window at rear first floor level to replace existing side-facing window, subdivision of rear garden, with associated bin and cycle stores (part retrospective)

  Refused Full applications New dwelling Windows or glazing 15 docs

• 129 Nether Street London N12 8AB

  26/2478/RCU Submitted 30 Jun 2026 150 yards away

  79% historically approved · decision due ~26 Aug

  New front hardstanding and vehicular access to provide off-street parking. Installation of garden wall and front access gates. (Retrospective Application)

  Decided

• Land Rear Of 35 - 49 Gainsborough Road London N12 8AA

  26/2546/S73 Submitted 7 Jul 2026 200 yards away

  79% historically approved · decision due ~14 Sep

  Variation of conditions 1 (Approved Plans), 3 (Levels), 4 (Materials), 5 (Demolition and Construction Management Plan), 6 (Refuse), 7 (Land Contamination), 8 (Landscaping), 9 (Tree Protection), 10 (Green Roof), 11 (Cycle Parking), 12 (Boundary Treatment), 21 (Foundation Design), 22 (Low Impact Lighting), 23 (Biodiversity Enhancement Plan) and 24 (Secured By Design) of planning permission reference 25/1972/FUL dated 05/06/26 for 'Demolition of existing garages and erection of 3no. single storey dwellings with amenity space, refuse/recycling/bicycle enclosures and soft landscaping.' Variation to include: Alterations to building footprints; Amendments to the wording of conditions 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 21, 22, 23, and 24

  Decided Demolition Trees 31 docs
  Small domestic

• 68 Avondale Avenue London N12 8EN

  26/0282/HSE Submitted 26 Jan 2026 200 yards away

  Single storey rear extension with raised terrace area and associated access steps

  Granted Householder Extension 11 docs
  Small domestic

• 81 Nether Street London N12 7NP

  21/5029/HSE Submitted 17 Sep 2021 200 yards away

  Single storey rear extension, rebuilding of the existing side extension wall and roof. Erection of a rear outbuilding following demolition of existing outbuilding.

  Granted Householder Extension Demolition 18 docs
  Small domestic

• 26/2679/192 Granted

  21 Myddelton Park London N20 0JH

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

  Received 20 Jul, published by the council 7 Aug 2026 Lawful development
• 26/1362/191 Refused

  145 Cotswold Gardens London NW2 1PL

  Use as a House in Multiple Occupation (HMO) for 6 people

  Received 14 Apr, published by the council 25 Jul 2026 Lawful development
• 26/1907/191 Granted

  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)

  Received 21 May, published by the council 16 Aug 2026 Lawful development
• 26/2392/192 Refused

  6 Mostyn Road Edgware HA8 0JD

  New front hardstanding and vehicular access to provide off-street parking

  Received 23 Jun, published by the council 9 Aug 2026 Lawful development
• 26/2059/192 Refused

  Low Ridge Rowley Lane Barnet EN5 3HS

  Erection of a rear outbuilding

  Received 3 Jun, published by the council 16 Aug 2026 Lawful development