18 Sandringham Gardens London N12 0NX

1. 3 Mar 2026

   Received by Barnet

2. 5 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 10 Mar 2026

   Decision issued: Lawful

4. 10 Aug 2026

   Added to PlanIndex

Barnet granted permission on 10 March 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.

• 24 Addington Drive London N12 0PH

  26/2693/HSE Submitted 20 Jul 2026 50 yards away

  77% historically approved · decision due ~14 Sep

  Single story front and side extension with 2no. rooflights incorporating new front porch. Single storey rear conservatory

  Decided Householder Extension Loft or dormer
  Small domestic

• 17 Sandringham Gardens London N12 0NY

  26/1954/FUL Submitted 26 May 2026 100 yards away

  Conversion of the existing dwelling into 2no. self-contained flats including roof extension involving hip to gable, rear dormer window, 2no. front facing rooflights and new side gable window. Associated refuse/recycling/cycle storage

  Refused Full applications New dwelling Extension +2 14 docs
  Domestic

• 608 High Road London N12 0AA

  26/3343/CON Submitted 11 Sep 2026 100 yards away

  78% historically approved · decision due ~6 Nov

  Submission of details of condition 3 (Sound insulation) 6 (Subdivision of amenity space) pursuant to planning permission 24/4563/FUL dated 14/04/2025

  Decided

• 19 Kenver Avenue London N12 0PG

  25/5173/192 Submitted 24 Dec 2025 150 yards away

  80% historically approved · decision due ~18 Feb

  Erection of a rear outbuilding

  Awaiting decision Lawful development 3 docs

• 19 Kenver Avenue London N12 0PG

  26/1746/HSE Submitted 11 May 2026 150 yards away

  Erection of a rear outbuilding

  Refused Householder 7 docs
  Small domestic

• 19 Kenver Avenue London N12 0PG

  26/0329/HSE Submitted 28 Jan 2026 150 yards away

  77% historically approved · decision due ~26 Mar

  Two storey rear extension. Single storey side extension. Conversion of garage into store

  Awaiting decision Householder Extension 5 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