9 Cadogan Gardens London N3 2HN

This site has had 2 applications since 2025.

• 26/1925/NMA Awaiting decision

  9 Cadogan Gardens London N3 2HN

  Non material amendment to planning permission 25/3848/HSE dated 04/11/2025 for 'Single storey rear extension with 2no. rooflights. Front porch fenestration and facade alterations'. Amendments includes changes to the design of the rear-facing fenestration including increasing the height of the proposed doors to go up to the underside of the gable roof, increasing the height of the oriel window

  Submitted 21 May 2026 Amendments

1. 18 Sep 2025

   Received by Barnet

2. 19 Sep 2025

   Validated

   Checked as complete and ready for consideration.

3. 10 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 14 November 2025, 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.

1 later application on the register refers to this one:

• 26/1925/NMA Awaiting decision

  9 Cadogan Gardens London N3 2HN

  Non material amendment to planning permission 25/3848/HSE dated 04/11/2025 for 'Single storey rear extension with 2no. rooflights. Front porch fenestration and facade alterations'. Amendments includes changes to the design of the rear-facing fenestration including increasing the height of the proposed doors to go up to the underside of the gable roof, increasing the height of the oriel window

  Submitted 21 May 2026 Amendments

This application is with Barnet for determination, against a statutory target of eight weeks. Over the last year Barnet decided householder applications in a median of 56 days. More in our guide to how long planning decisions take.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 9 Cadogan Gardens London N3 2HN

  26/1925/NMA Submitted 21 May 2026 50 yards away

  65% historically approved · decision due ~16 Jul

  Non material amendment to planning permission 25/3848/HSE dated 04/11/2025 for 'Single storey rear extension with 2no. rooflights. Front porch fenestration and facade alterations'. Amendments includes changes to the design of the rear-facing fenestration including increasing the height of the proposed doors to go up to the underside of the gable roof, increasing the height of the oriel window

  Awaiting decision Amendments Extension Loft or dormer +1 5 docs
  Small domestic

• 60 Hervey Close London N3 2HJ

  21/6146/HSE Submitted 23 Nov 2021 100 yards away

  First floor side and part single, part two storey rear extensions with 3no skylights to flat roof of single storey rear extension. Associated alterations and extension to roof including 1no. front facing and 1no. rear facing rooflights and side window. New front porch

  Withdrawn Householder Extension Loft or dormer +1 10 docs
  Small domestic

• 14 Strathmore Gardens London N3 2HL

  21/5830/192 Submitted 3 Nov 2021 150 yards away

  Single storey rear extension. Roof extension involving rear dormer window with juliette balcony and 2no front facing rooflights

  Refused Lawful development Extension Loft or dormer +1 5 docs
  Small domestic

• First And Second Floor Flat 10 Dukes Avenue London N3 2DD

  26/2101/FUL Submitted 5 Jun 2026 150 yards away

  63% historically approved · decision due ~31 Jul

  Roof extension with rear dormer window, juliette balcony and 2no. front facing rooflights

  Awaiting decision Full applications Extension Loft or dormer +1 25 docs

• First And Second Floor Flat 10 Dukes Avenue London N3 2DD

  26/3175/CON Submitted 28 Aug 2026 150 yards away

  78% historically approved · decision due ~29 Oct

  Submission of details of condition 5 (Biodiversity Enhancement Plan (BEP)) pursuant to planning permission 26/2101/FUL dated 29/07/2026

  Decided

• Ground Floor Flat 10 Dukes Avenue London N3 2DD

  26/2549/FUL Submitted 7 Jul 2026 150 yards away

  63% historically approved · decision due ~1 Sep

  Erection of a rear outbuilding

  Decided Full applications

• 26/3853/HSE Awaiting decision

  30 Goldsmith Avenue London NW9 7HB

  Single storey rear extension following demolition of the existing extension

  23 Oct 2026 Householder
• 26/3856/HSE Awaiting decision

  229 Hale Drive London NW7 3EH

  Single storey rear extension

  23 Oct 2026 Householder
• 26/3827/HSE Awaiting decision

  43 Hermitage Lane London NW2 2HE

  Single storey rear extension with 3no. rooflights following demolition of the existing conservatory. Replacement front bay window and entrance porch. First floor rear juliette balcony. Changes to fenestration including new window openings and enlarged front rooflight

  22 Oct 2026 Householder
• 26/3833/HSE Awaiting decision

  47 Holne Chase London N2 0QG

  Single storey rear extension. Replacement of single glazed windows with double glazing. Alterations to side/rear fenestration. Alterations and replacement of existing rear dormer window addition of 2no. side dormer windows and 3no. rooflights. Installation of cameras and wall lights. Replacement of the front entrance and garage doors, installation of timber side garden gates

  22 Oct 2026 Householder
• 26/3841/HSE Awaiting decision

  Manor House West Heath Close London NW3 7NJ

  New metal framed pergola to upper ground floor rear terrace

  Received 22 Oct, published by the council 23 Oct 2026 Householder