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Planning application

1 Summerlee Gardens London N2 9QN

Awaiting decision Barnet 26/0028/HSE Householder Application

Works: Extension Loft or dormer Windows or glazing Small domestic

Read from the description, not a valuation. How we read the register

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Single storey side return extension. Roof extension involving hip to gable with rear dormer windows with 3no. front facing rooflights

As published by the council, reference 26/0028/HSE

Application record

Reference
26/0028/HSE
Type
Householder Application
Status
Pending Consideration
Received
5 Jan 2026
Validated
6 Jan 2026
Ward
East Finchley
Postcode
N2 9QN

Site history

Applications at this address on the Barnet register

This site has had 2 applications since 2025: 0 approved, 1 refused.

  • 25/4756/192 Refused

    1 Summerlee Gardens London N2 9QN

    Single storey side return extension. Roof extension involving hip to gable with rear dormer windows with 3no. front facing rooflights

    Decided 17 Dec 2025 Lawful development

Timeline

Dates from the published record

  1. 5 Jan 2026

    Received by Barnet

  2. 6 Jan 2026

    Validated

    Checked as complete and ready for consideration.

  3. 10 Aug 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 3 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.

Who's behind it

Company information only, from the register and Companies House

Polygon Architects Agent, an architecture practice registered in Exeter

Active · incorporated 2015 · Exeter

2 applications on PlanIndex

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See their track record

Documents

Plans, drawings, consultee responses and the officer's report

22 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Watch members (£5 a month) open the document list from here.

Open the documents

What happens while it is decided

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.

About householder applications

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.

Nearby applications

Within 0.3 miles

  • 1 Summerlee Gardens London N2 9QN

    25/4756/192 Submitted 28 Nov 2025 50 yards away

    Single storey side return extension. Roof extension involving hip to gable with rear dormer windows with 3no. front facing rooflights

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

  • 55 Summerlee Avenue London N2 9QJ

    26/1048/HSE Submitted 18 Mar 2026 50 yards away

    Single storey rear extension with 2no. roof lanterns

    Granted Householder Extension 5 docs
    Small domestic

  • 55 Summerlee Avenue London N2 9QJ

    26/1649/HSE Submitted 1 May 2026 50 yards away

    Single storey rear extension with 2no. roof lanterns. Alterations to the existing patio area. Replacement of existing side store and insertion of 1no. rooflight

    Granted Householder Extension Loft or dormer 8 docs
    Small domestic

  • 82 Summerlee Avenue London N2 9QH

    26/3270/HSE Submitted 8 Sep 2026 100 yards away

    77% historically approved · decision due ~4 Nov

    Erection of wooden bike shed in the front garden

    Awaiting decision Householder
    Small domestic

  • 74 Summerlee Avenue London N2 9QH

    26/0288/192 Submitted 26 Jan 2026 100 yards away

    Erection of a garden studio following demolition of the existing garage

    Granted Lawful development Demolition 7 docs

  • 49 Baronsmere Road London N2 9QG

    25/4030/HSE Submitted 6 Oct 2025 100 yards away

    77% historically approved · decision due ~1 Dec

    Single storey side/rear extension

    Awaiting decision Householder Extension 3 docs
    Small domestic

In Barnet

  • 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