26 Clifton Avenue London N3 1BN

1. 27 Jan 2026

   Received by Barnet

2. 10 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 24 March 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 46 days over the applications it decided in the last year.

This application is with Barnet for determination, against a statutory target of eight weeks. Over the last year Barnet decided amendment applications in a median of 42 days. More in our guide to how long planning decisions take.

An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.

• 20 Clifton Avenue London N3 1BN

  26/2688/192 Submitted 20 Jul 2026 50 yards away

  78% historically approved · decision due ~14 Sep

  Roof extension involving hip to gable with rear dormer windows and 4no. front facing rooflights

  Awaiting decision Extension Loft or dormer +1

• 22 Dollis Park London N3 1HN

  26/1543/S73 Submitted 24 Apr 2026 100 yards away

  93% historically approved · decision due ~19 Jun

  Variation of condition 1 (Approved plans) of planning permission 26/0274/FUL dated 14.04.2026 for Conversion of existing single family dwellinghouse into 2no. self-contained flats including single storey side infill extension. Associated amenity space, refuse and cycle storage. Variation to include alterations to proposed layout of Flat B, the kitchen/living room to be located on first floor and bedroom on the second floor

  Awaiting decision Conditions New dwelling Extension 7 docs
  Small domestic

• 22 Dollis Park London N3 1HN

  26/0274/FUL Submitted 26 Jan 2026 100 yards away

  63% historically approved · decision due ~23 Mar

  Conversion of existing single family dwellinghouse into 2no. self-contained flats including single storey side infill extension. Associated amenity space, refuse and cycle storage

  Awaiting decision Full applications New dwelling Extension 13 docs
  Small domestic

• Land Rear Of 26 Dollis Park London N3 1BP

  26/3665/FUL Submitted 9 Oct 2026 100 yards away

  63% historically approved · decision due ~4 Dec

  Conversion and extension of existing detached garage/outbuilding with new front windows, side door and conservation rooflights to create 1no. self contained dwelling including associated private amenity space, refuse/recycling and cycle storage, landscaping and boundary treatment

  Awaiting decision Full applications Extension Loft or dormer +1
  Small domestic

• The Cottage 38A Dollis Park London N3 1BP

  25/3560/NMA Submitted 28 Aug 2025 150 yards away

  Non material amendment to planning permission 25/1935/HSE dated 09/05/2025 for `Roof extension involving side dormer window and 2no. rooflight`. Amendments to front elevation introducing feature brickwork detailing around the window

  Granted Amendments Extension Loft or dormer +1 3 docs

• 63 Church Crescent London N3 1BL

  26/0866/192 Submitted 6 Mar 2026 150 yards away

  Roof extension involving hip to gable and rear dormer window

  Granted Lawful development Extension Loft or dormer +1 8 docs

• 26/3776/NMA Awaiting decision

  2 Beechworth Close London NW3 7UT

  Non-material amendments to planning permission reference 24/4827/HSE dated 21/01/25 for 'New front boundary walls and access gates. New fencing with associated landscaping.' Amendments include changes to front boundary wall and fences and landscaping

  Received 19 Oct, published by the council 21 Oct 2026 Amendments
• 26/3775/NMA Awaiting decision

  2 Beechworth Close London NW3 7UT

  Non-material amendments to planning permission reference 24/0743/HSE dated 20/05/24 for 'Part single, part two-storey side and rear extension. Single storey front infill extension. Second floor roof extension to incorporate terrace area. Alterations to the external facade and fenestration arrangement.' Changes to external finishes / materials; Addition of glass balustrade to east and south elevations of roof terrace; Removal of chimney to north elevation; Changes to fenestration; Changes to hard landscaping: Changes to internal layouts; Amendment to Design and Access Statement

  Received 19 Oct, published by the council 21 Oct 2026 Amendments
• 26/3778/NMA Awaiting decision

  Unit 1 Great North Leisure Park Chaplin Square London N12 0GL

  Non-material amendments to planning permission reference C11441AK dated 02/06/98 for 'Variation to condition 13 (Opening Hours) of planning permission ref: C11441A to enable the restaurants to be open until midnight on Mondays to Saturdays and until 11.30pm on Sundays, and to enable restaurant C to open from 7am on Mondays to Saturdays.' Amendments include changing opening hours to allow Unit 1 to open from 7:30am Monday to Sunday

  Received 19 Oct, published by the council 21 Oct 2026 Amendments
• 26/3748/NMA Awaiting decision

  80 Margaret Road Barnet EN4 9RB

  Non-material amendments to planning permission reference B/02962/13 dated 18/09/13 for 'Single storey front/side extension and single storey rear extension including new rear patio and part of its enclosure with 1.1m high timber fence and post.' Amendments include revisions to the side extension and renewal of roof coverings

  Received 16 Oct, published by the council 21 Oct 2026 Amendments
• 26/3741/NMA Awaiting decision

  8 North Square London NW11 7AA

  Non material amendment to planning permission 26/1111/HSE dated 17/09/2026 for 'Conversion of existing garage and utility room into habitable room, including raising height of roof and insertion of 1no. rooflight and replacement of existing windows on west (side) garage elevation with 1no. door and 1no. window. Insertion of 1no. rooflight to flat section of the main roof. Removal of modern external waste pipes. (Revised Design)'. Amendments includes changes to the wording of condition 3 to enable the required detail/materials to be approved before works starts on each relevant part of the development

  Received 15 Oct, published by the council 16 Oct 2026 Amendments