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Planning application

40 Holne Chase London N2 0QQ

Awaiting decision Barnet 26/0647/HSE Householder Application

Works: Extension Loft or dormer Windows or glazing 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

Replacement of existing windows and doors on north and west elevations and front elevation outrigger window with double glazing. Changes to fenestration on front, side and rear elevations. Roof extension including 2no. rear dormer windows following the removal of the existing rear dormer window and rear facing rooflights. Installation of CCTV on front, side and rear elevations, and air conditioning unit with enclosure in rear garden. New side gate and hedge

As published by the council, reference 26/0647/HSE

Application record

Reference
26/0647/HSE
Type
Householder Application
Status
Pending Consideration
Received
19 Feb 2026
Validated
20 Feb 2026
Ward
Garden Suburb
Postcode
N2 0QQ

Site history

Applications at this address on the Barnet register

This site has had 2 applications since 2025.

  • 25/4885/HSE Withdrawn

    40 Holne Chase London N2 0QQ

    Excavation of new basement. Alterations and extension to roof including addition of 2no. rear dormer windows to replace existing dormer window and removal of rooflights. Alterations to windows and doors including new double glazing. Enlargement of select, existing ground floor North, East and West elevation windows. Installation of new air-con unit and enclosure to rear garden. New side gate and hedge. Internal Alterations

    Decided 13 Jan 2026 Householder

Timeline

Dates from the published record

  1. 19 Feb 2026

    Received by Barnet

  2. 20 Feb 2026

    Validated

    Checked as complete and ready for consideration.

  3. 10 Aug 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 17 April 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

Simon Miller Architects Ltd Agent, an architecture practice registered in London

Active · incorporated 2005 · London

30 applications on PlanIndex · across 4 councils · 92% granted

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See their track record

Documents

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

37 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.

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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

  • 40 Holne Chase London N2 0QQ

    25/4885/HSE Submitted 5 Dec 2025 50 yards away

    Excavation of new basement. Alterations and extension to roof including addition of 2no. rear dormer windows to replace existing dormer window and removal of rooflights. Alterations to windows and doors including new double glazing. Enlargement of select, existing ground floor North, East and West elevation windows. Installation of new air-con unit and enclosure to rear garden. New side gate and hedge. Internal Alterations

    Withdrawn Householder Extension Loft or dormer +1 32 docs
    Domestic
  • 47 Holne Chase London N2 0QG

    26/3833/HSE Submitted 22 Oct 2026 50 yards away

    77% historically approved · decision due ~17 Dec

    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

    Awaiting decision Householder Extension Loft or dormer +1
    Small domestic
  • 2 Spencer Drive London N2 0QX

    TCP/0142/26 Submitted 12 Mar 2026 50 yards away

    1 x Birch (applicants ref. T1) - Remove.

    Decided Trees 9 docs
  • 66 Kingsley Way London N2 0EW

    TCP/0239/26 Submitted 23 Apr 2026 100 yards away

    1 x Plum - Fell.- (5 day notice) (amended description)

    Decided Trees 5 docs
  • 49 Kingsley Way London N2 0EJ

    TCP/0277/26 Submitted 14 May 2026 100 yards away

    1 x Fallen Willow (applicants ref. T1) - Remove.

    Decided Trees 7 docs
  • 35 Holne Chase London N2 0QL

    26/1792/NMA Submitted 12 May 2026 100 yards away

    Non-material amendments to planning permission reference 24/5480/HSE dated 11/02/25 for 'Conversion of the garage to habitable use, restoring the original 4 leaf vertical panelled doors; Enlarge the ground floor front window as a three light design with lower sills. Single storey rear extension under a flat lead roof with new French doors and side windows with lower sills. Insertion of a French door in the centre of the rear bay window with lower sills to the ground floor windows. Retention of the side hipped roof on the South East side with the unstable chimney stack rebuilt with a narrower lead roof side extension to the rear. Restoration of the retained dormer windows with arched lead roofs. Addition of a low skylight in the flat crown roof concealed by the surrounding ridge tiles. Minor adjustments to the fenestration on the North west Elevation with redundant external drainage pipework removed.' Amendments include, Rebuilding the rear bay; Adjustments to the fenestration on the side elevations; Replacement of the tiling with lead cheeks and roofs of the dormer windows; Replacement soil vent pipes, rainwater downpipes, gutters and fittings; Developed garden layout with bin store, shed, enclosed A/C condenser, pergola, external kitchen

    Refused Amendments Extension Loft or dormer +1 5 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
  • 26/3863/HSE Awaiting decision

    12 Vale Drive Barnet EN5 2ED

    Single storey side and rear extension

    Received 23 Oct, published by the council 24 Oct 2026 Householder
  • 26/3858/HSE Awaiting decision

    131 Rushgrove Avenue London NW9 6RG

    Single storey rear extension. New front porch

    Received 23 Oct, published by the council 24 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