63 Sefton Avenue London NW7 3QE

This site has had 5 applications since 2026: 1 approved, 2 refused.

• 26/1690/PNH Awaiting decision

  63 Sefton Avenue London NW7 3QE

  Single storey rear extension with a proposed maximum depth of 6.00 metres, maximum height of 4.00 metres and an eaves height of 2.40m

  Submitted 6 May 2026 Prior approval
• 26/1001/PNH Refused

  63 Sefton Avenue London NW7 3QE

  Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 4.00 metres and eaves height of 2.70 metres

  Decided 20 Apr 2026 Prior approval
• 26/0602/PNH Refused

  63 Sefton Avenue London NW7 3QE

  Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 3.50 metres and eaves height of 3.00 metres

  Decided 31 Mar 2026 Prior approval
• 26/0597/192 Granted

  63 Sefton Avenue London NW7 3QE

  Roof extension involving hip to gable, rear dormer window, 2no. front facing rooflights and new side gable window

  Decided 2 Mar 2026 Lawful development

1. 19 Jun 2026

   Received by Barnet

2. 25 Jul 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 14 August 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 43 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 prior approval applications in a median of 36 days. More in our guide to how long planning decisions take.

Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.

• 63 Sefton Avenue London NW7 3QE

  26/1690/PNH Submitted 6 May 2026 50m away

  58% historically approved · decision due ~1 Jul

  Single storey rear extension with a proposed maximum depth of 6.00 metres, maximum height of 4.00 metres and an eaves height of 2.40m

  Awaiting decision Prior approval Extension 10 docs
  Small domestic

• 63 Sefton Avenue London NW7 3QE

  26/0597/192 Submitted 16 Feb 2026 50m away

  Roof extension involving hip to gable, rear dormer window, 2no. front facing rooflights and new side gable window

  Granted Lawful development Extension Loft or dormer +1 11 docs

• 63 Sefton Avenue London NW7 3QE

  26/0602/PNH Submitted 17 Feb 2026 52m away

  Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 3.50 metres and eaves height of 3.00 metres

  Refused Prior approval Extension 13 docs
  Small domestic

• 63 Sefton Avenue London NW7 3QE

  26/1001/PNH Submitted 16 Mar 2026 53m away

  Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 4.00 metres and eaves height of 2.70 metres

  Refused Prior approval Extension 14 docs
  Small domestic

• 31 Sefton Avenue London NW7 3QB

  25/5113/NMA Submitted 19 Dec 2025 89m away

  Non material amendment to planning permission 25/3239/HSE dated 01/10/2025 for 'First floor side extension. Roof extension involving hip to gable, rear dormer with glass balustrade for the juliette balcony and 3no. front facing rooflights. Changes to roof tiles and fenestration' Amendments includes removal of existing chimney and adjustment to front facing rooflights

  Granted Amendments Extension Loft or dormer +2 9 docs

• 29 Sefton Avenue London NW7 3QB

  25/5133/192 Submitted 22 Dec 2025 97m away

  Roof extension involving removal of the existing side and rear dormer window and new hip to gable, rear dormer window, 3no. front facing rooflights and new side gable window. Demolition of the existing chimney. Single storey front porch extension. Demolition of the existing garage. Alterations to the existing driveway including removal of side boundary wall

  Refused Lawful development Extension Loft or dormer +2 17 docs
  Small domestic

• 26/3407/PNH Awaiting decision

  12 Ingleway London N12 0QJ

  Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 2.75 metres and eaves height of 2.75 metres, following demolition of the existing conservatory.

  17 Sep 2026 Prior approval
• 26/3322/PNH Awaiting decision

  35 Aldridge Avenue Edgware HA8 8TA

  Single storey rear extension with a proposed depth of 6 metres, maximum height of 3 metres and eaves height of 3 metres.

  11 Sep 2026 Prior approval
• 26/3337/PNH Awaiting decision

  103 Brunswick Park Road London N11 1JT

  Single storey rear extension with a proposed depth of 6 metres, maximum height of 4 metres and eaves height of 3 metres. Following demolition of the existing garage.

  11 Sep 2026 Prior approval
• 26/3320/PNH Awaiting decision

  31 Woodlands London NW11 9QJ

  2no. single-storey rear extensions with a proposed depth of 6 metres, maximum height of 4 metres and eaves height of 3 metres, following demolition of the existing rear extension and patio. (Amended description)

  10 Sep 2026 Prior approval
• 26/3303/PNH Awaiting decision

  95 Bittacy Rise London NW7 2HH

  Single storey rear extension with a proposed depth of 4.00 metres, maximum height of 4.00 metres and eaves height of 3.00 metres. Following demolition of the existing rear extension.

  9 Sep 2026 Prior approval