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Planning application

74 Mansfield Avenue Barnet EN4 8QF

Awaiting decision Barnet 25/4120/HSE Householder Application

Works: Extension 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

First floor rear extension with juliette balcony and addition of two new windows openings. Conversion of the existing garage into habitable room, insertion of window to replace the garage door

As published by the council, reference 25/4120/HSE

Application record

Reference
25/4120/HSE
Type
Householder Application
Status
Pending Consideration
Received
14 Oct 2025
Validated
15 Oct 2025
Ward
East Barnet
Postcode
EN4 8QF

Site history

Applications at this address on the Barnet register

This site has had 2 applications since 2025.

  • 26/0016/HSE Awaiting decision

    74 Mansfield Avenue Barnet EN4 8QF

    First floor rear extension with juliette balcony and addition of two new windows openings. Reduction of ridge height of main roof of house to its original level

    Submitted 5 Jan 2026 Householder

Timeline

Dates from the published record

  1. 14 Oct 2025

    Received by Barnet

  2. 15 Oct 2025

    Validated

    Checked as complete and ready for consideration.

  3. 10 Aug 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 10 December 2025, 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.

Documents

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

10 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

  • 74 Mansfield Avenue Barnet EN4 8QF

    26/0016/HSE Submitted 5 Jan 2026 50 yards away

    77% historically approved · decision due ~4 Mar

    First floor rear extension with juliette balcony and addition of two new windows openings. Reduction of ridge height of main roof of house to its original level

    Awaiting decision Householder Extension Roofing +1 9 docs
    Domestic

  • 7 Vernon Crescent Barnet EN4 8QG

    26/0210/HSE Submitted 20 Jan 2026 50 yards away

    77% historically approved · decision due ~17 Mar

    Erection of a rear outbuilding

    Awaiting decision Householder 4 docs
    Small domestic

  • Land Adjacent To 40 Cornell Gardens Barnet EN4

    24/00300/TPO Submitted 1 Feb 2024 50 yards away

    Works to 1 x Robina tree covered by LBE Tree Preservation Order (No.351) 2011- Fell down to 2-3m stump.

    Granted Trees 8 docs

  • 180 Cat Hill Barnet EN4 8HU

    25/4134/PNH Submitted 14 Oct 2025 100 yards away

    Single storey rear extension with a proposed depth of 4.45 metres, maximum height of 3.0 metres and eaves height of 2.8 metres.

    Granted Prior approval Extension 6 docs
    Small domestic

  • 180 Cat Hill Barnet EN4 8HU

    25/3390/PNH Submitted 13 Aug 2025 100 yards away

    Single storey rear extension with a depth of 4.50 metres, maximum height of 3.40 metres and eaves height of 3.20 metres. Adjoining onto the existing extension.

    Refused Prior approval Extension 6 docs
    Small domestic

  • 180 Cat Hill Barnet EN4 8HU

    25/4135/HSE Submitted 14 Oct 2025 100 yards away

    Single storey side/rear extension (amended)

    Granted Householder Extension 6 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