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Planning application

12 Marsh Lane London NW7 4QP

Awaiting decision Barnet 26/0372/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 and rear extension. First floor rear extension with pitched and hipped roof with 1no. rear facing window and 1no. rooflight

As published by the council, reference 26/0372/HSE

Application record

Reference
26/0372/HSE
Type
Householder Application
Status
Pending Consideration
Received
2 Feb 2026
Validated
3 Feb 2026
Ward
Mill Hill
Postcode
NW7 4QP

Timeline

Dates from the published record

  1. 2 Feb 2026

    Received by Barnet

  2. 3 Feb 2026

    Validated

    Checked as complete and ready for consideration.

  3. 10 Aug 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 31 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

Ahrberg Jackson Design Agent, a design practice

13 applications on PlanIndex · across 5 councils · 100% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

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

6 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

  • 4 Marsh Lane London NW7 4QP

    21/5257/HSE Submitted 4 Oct 2021 50 yards away

    Second storey side and part rear extension.

    Granted Householder Extension 15 docs
    Domestic

  • 14 Barnet Way London NW7 3BH

    25/5187/HSE Submitted 29 Dec 2025 100 yards away

    77% historically approved · decision due ~23 Feb

    Erection of a rear outbuilding following demolition of the existing garage

    Awaiting decision Householder Demolition 8 docs
    Small domestic

  • 83 Uphill Road London NW7 4QD

    26/2021/HSE Submitted 1 Jun 2026 150 yards away

    Part single, part two storey side and rear extension new rear patio and steps to garden following demolition of existing garage and single storey rear extension. Removal of ground floor front bay window. Removal of two storey front entrance bay. New front porch. Alterations and extensions to roof including creation of new crown roof with 1no. front dormer window, 2no. rear dormer windows, 2no. rooflights facing No. 85 and 1no. rooflight facing No. 81. Removal of chimneys

    Refused Householder Extension Loft or dormer +2 22 docs
    Small domestic

  • 83 Uphill Road London NW7 4QD

    24/1511/HSE Submitted 16 Apr 2024 150 yards away

    Part single, part two storey side and rear extensions. Alterations and extensions to roof including 1no. front dormer window, 2no. rear dormer windows and 2no. rooflights to both side elevations. Alterations to front elevation. New raised patio.

    Refused Householder Extension Loft or dormer +1 28 docs
    Domestic

  • 83 Uphill Road London NW7 4QD

    25/4115/HSE Submitted 13 Oct 2025 150 yards away

    Part single, part two storey side and rear extension new rear patio and steps to garden following demolition of existing garage and single storey rear extension. Removal of ground floor front bay window. Removal of two storey front entrance bay. New front porch. Alterations and extensions to roof including creation of new crown roof with 1no. front dormer window, 2no. rear dormer windows and 2no. rooflights to both side roofslopes. Removal of chimneys

    Granted Householder Extension Loft or dormer +2 28 docs
    Small domestic

  • 85 Uphill Road London NW7 4QD

    26/1002/HSE Submitted 16 Mar 2026 150 yards away

    New access gates to front boundary

    Granted Householder 5 docs
    Domestic

In Barnet

  • 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