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Planning application

139 Lancaster Road Barnet EN4 8AJ

Granted Barnet 25/4251/HSE Householder Application

Works: Extension Small domestic

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

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Single storey side and rear extension with new patio area and associated access steps

As published by the council, reference 25/4251/HSE

Application record

Reference
25/4251/HSE
Type
Householder Application
Status
Approved subject to conditions
Decision
Granted As published: Approve subject to conditions
Received
23 Oct 2025
Validated
23 Oct 2025
Decided
18 Dec 2025
Ward
East Barnet
Decision by
Delegated Decision
Postcode
EN4 8AJ

Timeline

Dates from the published record

  1. 23 Oct 2025

    Received by Barnet

  2. 18 Dec 2025

    Decision issued: Approve subject to conditions

  3. 10 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

MBBM Studio Architects Ltd Agent, an architecture practice

29 applications on PlanIndex · across 8 councils · 68% granted

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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.

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What this grant of permission means

Barnet granted permission on 18 December 2025, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

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

  • 151 Lancaster Road Barnet EN4 8AJ

    26/2833/192 Submitted 31 Jul 2026 50 yards away

    79% historically approved · decision due ~5 Oct

    Changes to fenestration; installation of new rear sliding doors, replacement of existing windows. New rear raised patio area, privacy planters and installation of balustrade to the rear elevation with access steps to garden

    Awaiting decision Windows or glazing

  • 151 Lancaster Road Barnet EN4 8AJ

    26/3197/HSE Submitted 1 Sep 2026 50 yards away

    77% historically approved · decision due ~27 Oct

    Changes to fenestration including installation of widened rear sliding doors with fixed glass panel and protective glass balustrade, obscured privacy glass to the side window, infilling of two side kitchen windows, widening of the rear kitchen window, and reconfiguration of existing external access steps to garden (AMENDED)

    Decided Householder Windows or glazing
    Domestic

  • 40 Lancaster Road Barnet EN4 8AP

    26/2805/192 Submitted 29 Jul 2026 100 yards away

    79% historically approved · decision due ~24 Sep

    Single storey rear extension. Roof extension involving hip to gable, rear dormer window with juliette balcony, 2no side rooflights and new side windows. Erection of a rear outbuilding

    Awaiting decision Extension Loft or dormer +1
    Small domestic

  • 32 Lancaster Road Barnet EN4 8AP

    26/2485/HSE Submitted 1 Jul 2026 100 yards away

    77% historically approved · decision due ~26 Aug

    Erection of outbuilding in rear garden following demolition of existing outbuilding

    Decided Householder Demolition
    Small domestic

  • 36 Lancaster Road Barnet EN4 8AP

    25/3687/192 Submitted 8 Sep 2025 100 yards away

    Single storey rear extension with 2no. flat rooflights. Front porch. Front hardstanding

    Refused Lawful development Extension Loft or dormer 7 docs
    Several homes

  • 34-36 Henry Road Barnet EN4 8BD

    25/4457/CON Submitted 7 Nov 2025 150 yards away

    Submission of details of condition 18 (Solar PV) pursuant to planning permission 19/4282/FUL dated 13/05/2020

    Granted Conditions 7 docs

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