30 Summerlee Avenue London N2 9QP

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

• 26/3655/HSE Awaiting decision

  30 Summerlee Avenue London N2 9QP

  Roof extension including rear dormer window, juliette balcony and 2no. front facing rooflights including materials change from red clay to red zinc tiles

  Submitted 8 Oct 2026 Householder
• 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

1. 27 Jan 2026

   Received by Barnet

2. 28 Jan 2026

   Validated

   Checked as complete and ready for consideration.

3. 10 Aug 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 25 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 lawful development applications in a median of 28 days. More in our guide to how long planning decisions take.

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.

• 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

  26/0905/192 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

  26/3655/HSE Submitted 8 Oct 2026 50 yards away

  77% historically approved · decision due ~4 Dec

  Roof extension including rear dormer window, juliette balcony and 2no. front facing rooflights including materials change from red clay to red zinc tiles

  Awaiting decision Householder Extension Loft or dormer +1
  Domestic

• 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

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

  26/1404/191 Submitted 16 Apr 2026 50 yards away

  Use as 2no. self-contained flats

  Granted Lawful development New dwelling 11 docs

• 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