11 Grove Avenue London N3 1QS

1. 26 Mar 2026

   Received by Barnet

2. 30 Mar 2026

   Decision issued: Lawful

3. 25 Jul 2026

   Added to PlanIndex

Barnet granted permission on 30 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.

• First Floor Flat 33 Grove Avenue London N3 1QS

  26/0556/FUL Submitted 12 Feb 2026 100 yards away

  Change of use of the upper floor flat (Class C3) to a 3 bed House in Multiple Occupation (HMO) (Class C4). Associated refuse/recycling and cycle storage (AMENDED DESCRIPTION)

  Refused Full applications 15 docs

• 15 Sellers Hall Close London N3 1JL

  26/1446/HSE Submitted 20 Apr 2026 100 yards away

  77% historically approved · decision due ~19 Jun

  Extension of the existing outbuilding and replacement of flat roof with pitched roof to provide loft storage with internal access

  Awaiting decision Householder Extension 11 docs
  Small domestic

• 9 Lovers Walk London N3 1JH

  26/1447/HSE Submitted 20 Apr 2026 100 yards away

  Remodelling of the existing outbuilding including new access steps to garden level and replacement of flat roof with pitched roof to provide loft storage with internal access following removal of the existing wall

  Granted Householder 11 docs
  Small domestic

• 39 Cornwall Avenue London N3 1LG

  26/3192/HSE Submitted 1 Sep 2026 100 yards away

  77% historically approved · decision due ~27 Oct

  New front porch (amended plans)

  Decided Householder Extension
  Small domestic

• 32 Cornwall Avenue London N3 1LG

  26/2627/191 Submitted 14 Jul 2026 100 yards away

  78% historically approved · decision due ~1 Oct

  Conversion of part of the 1st floor and 2nd floor to create 1no. self-contained residential dwelling (Use Class C3)

  Awaiting decision 18 docs
  Domestic

• 18 Sellers Hall Close London N3 1JL

  26/0262/HSE Submitted 23 Jan 2026 150 yards away

  New front porch. Replacement of existing rear windows and doors including ground floor double doors and first floor windows with new balustrades to terrace area and 2no. second floor juliette balconies . Render finish to existing ground floor rear and side elevation

  Granted Householder Extension Windows or glazing 9 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