30 Summerlee Avenue London N2 9QP

This site has had 6 applications since 2026: 1 approved, 1 refused.

• 26/2299/PNH Awaiting decision

  30 Summerlee Avenue London N2 9QP

  Single storey rear extension with a proposed depth of 4.05m, maximum height of 3.00m and an eaves height of 3.00m

  Submitted 18 Jun 2026 Prior approval
• 26/1799/PNH Refused

  30 Summerlee Avenue London N2 9QP

  Single storey rear extension with a maximum proposed depth of 4.05m, maximum height of 3.33m and an eaves height of 3.33m (height of lowered section 3.08m)

  Decided 17 Jun 2026 Prior approval
• 26/0905/192 Granted

  30 Summerlee Avenue London N2 9QP

  Single storey rear extension with 2no. rooflights following demolition of existing timber extension. Single storey outbuilding to rear garden with green roof. New front porch

  Decided 7 Apr 2026 Lawful development
• 26/0307/HSE Awaiting decision

  30 Summerlee Avenue London N2 9QP

  Single storey rear extension with roof lights following demolition of existing timber extension. Increase depth of existing cellar to form new storage room. Single storey outbuilding to rear garden with green roof. New front porch. Replacement of existing windows with new timber framed double-glazed windows

  Submitted 27 Jan 2026 Householder
• 26/0308/192 Awaiting decision

  30 Summerlee Avenue London N2 9QP

  Roof extension including rear dormer window with juliette balcony and 2no. rooflights to front roofslope

  Submitted 27 Jan 2026 Lawful development

1. 8 Oct 2026

   Received by Barnet

2. 9 Oct 2026

   Validated

   Checked as complete and ready for consideration.

3. 12 Oct 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 4 December 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 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.

• 30 Summerlee Avenue London N2 9QP

  26/2299/PNH Submitted 18 Jun 2026 50 yards away

  56% historically approved · decision due ~13 Aug

  Single storey rear extension with a proposed depth of 4.05m, maximum height of 3.00m and an eaves height of 3.00m

  Awaiting decision Prior approval Extension
  Small domestic

• 30 Summerlee Avenue London N2 9QP

  26/0905/192 Submitted 10 Mar 2026 50 yards away

  Single storey rear extension with 2no. rooflights following demolition of existing timber extension. Single storey outbuilding to rear garden with green roof. New front porch

  Granted Lawful development Extension Loft or dormer +1 22 docs
  Small domestic

• 30 Summerlee Avenue London N2 9QP

  26/1799/PNH Submitted 13 May 2026 50 yards away

  Single storey rear extension with a maximum proposed depth of 4.05m, maximum height of 3.33m and an eaves height of 3.33m (height of lowered section 3.08m)

  Refused Prior approval Extension 29 docs
  Small domestic

• 30 Summerlee Avenue London N2 9QP

  26/0307/HSE Submitted 27 Jan 2026 50 yards away

  77% historically approved · decision due ~25 Mar

  Single storey rear extension with roof lights following demolition of existing timber extension. Increase depth of existing cellar to form new storage room. Single storey outbuilding to rear garden with green roof. New front porch. Replacement of existing windows with new timber framed double-glazed windows

  Awaiting decision Householder Extension Loft or dormer +2 23 docs
  Small domestic

• 30 Summerlee Avenue London N2 9QP

  26/0308/192 Submitted 27 Jan 2026 50 yards away

  80% historically approved · decision due ~25 Mar

  Roof extension including rear dormer window with juliette balcony and 2no. rooflights to front roofslope

  Awaiting decision Lawful development Extension Loft or dormer +1 21 docs

• Ground Floor And First Floor Flat 45 Park Hall Road London N2 9PT

  26/1404/191 Submitted 16 Apr 2026 100 yards away

  Use as 2no. self-contained flats

  Granted Lawful development New dwelling 11 docs

• 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
• 26/3815/HSE Awaiting decision

  17 Hurstwood Road London NW11 0AS

  Single storey rear extension

  21 Oct 2026 Householder
• 26/3800/HSE Awaiting decision

  29 Monks Avenue Barnet EN5 1BZ

  Single storey side and rear infill extension including new front porch following demolition of the side/rear storage.

  Received 20 Oct, published by the council 21 Oct 2026 Householder
• 26/3791/HSE Awaiting decision

  149 Montrose Avenue Edgware HA8 0DZ

  New front hardstanding and vechicular access to provide off-street parking

  Received 20 Oct, published by the council 21 Oct 2026 Householder