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Planning application

40 Northiam London N12 7HJ

Refused Barnet 25/4397/PNH Prior Notification (Householder)

Works: Extension Demolition Small domestic

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

Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.

Proposal

Single storey rear and side extension with a proposed depth from the rear wall of 4.00m, maximum height of 3.00m and eaves height of 3.00m following the demolition of the existing side extension and shed

As published by the council, reference 25/4397/PNH

Application record

Reference
25/4397/PNH
Type
Prior Notification (Householder)
Status
Prior Approval Required and Refused
Decision
Prior Approval Required and Refused
Received
4 Nov 2025
Validated
5 Nov 2025
Decided
10 Dec 2025
Ward
Totteridge & Woodside
Decision by
Delegated Decision
Postcode
N12 7HJ

Timeline

Dates from the published record

  1. 4 Nov 2025

    Received by Barnet

  2. 5 Nov 2025

    Validated

    Checked as complete and ready for consideration.

  3. 10 Dec 2025

    Decision issued: Prior Approval Required and Refused

  4. 10 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Agent on file, a design practice registered in Leamington Spa

2 applications on PlanIndex

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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.

Trade members open them from here.

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What refusal means

The process from here

The council refused this application for the reasons set out on the decision notice, which the council portal holds in full. Only the applicant can appeal a refusal; the time limit runs from the decision date and is shorter for householder schemes.

Refusal does not prevent a fresh attempt. Applicants often address the reasons for refusal and resubmit, so a refused scheme is not necessarily the end of proposals for the site.

About prior approval applications

How this application type works

Prior approval applications arise where permitted development rights already grant the principle of the work, such as larger home extensions, changes of use to housing or agricultural buildings. The council may only consider the specific matters set out in the rules, for example transport, flooding or appearance, and in many classes the work may proceed if the council does not respond within the deadline, commonly 56 days.

More on prior approval applications in our guide

Nearby applications

Within 500 metres

  • 40 Northiam London N12 7HJ

    26/0613/HSE Submitted 17 Feb 2026 0m away

    Single storey side and rear extension including alteration to the existing access steps following demolition of the side garage and rear outbuilding

    Refused Householder Extension Demolition 14 docs
    Small domestic

  • 40 Northiam London N12 7HJ

    25/4202/192 Submitted 20 Oct 2025 0m away

    Roof extension involving hip to gable, rear dormer window, 3no. front facing rooflights and new side gable window

    Decided Lawful development Extension Loft or dormer +1 8 docs

  • 71 Southover London N12 7HG

    26/0983/HSE Submitted 16 Mar 2026 47m away

    77% historically approved · decision due ~15 Jun

    Conversion of garage into habitable room including insertion of windows to replace existing garage doors and addition of new pitched roof with rooflight. Two storey side extension following demolition of existing store. Roof extension including 1no. side dormer window, 1no. rear dormer window and 2no. front facing rooflights and increase in ridge height. Installation of solar panels. Alterations to ground floor rear projection including changes to fenestration and insertion of rooflights to flat roof. Addition of 1no. AC condenser unit and 1no. Air Source Heat Pump to side elevation. Removal of chimneys

    Awaiting decision Householder Extension Loft or dormer +3 6 docs
    Domestic

  • 40 Northiam London N12 7HJ

    26/2250/HSE Submitted 16 Jun 2026 90m away

    77% historically approved · decision due ~11 Aug

    Single storey side and rear extension including 3no. flat rooflights and alteration to the existing access steps following demolition of the side garage and rear outbuilding

    Decided Householder Extension Loft or dormer +1
    Several homes

  • 58 Northiam London N12 7HJ

    25/4079/HSE Submitted 10 Oct 2025 91m away

    77% historically approved · decision due ~8 Dec

    Part single, part two storey front, side and rear extensions following demolition of existing garage and ground floor side and rear extension. Insertion of 1no. new first floor window to flank elevation. Alterations to front steps. New front porch. Alterations to rear patio

    Awaiting decision Householder Extension Demolition +1 20 docs
    Small domestic

  • 58 Northiam London N12 7HJ

    25/4786/HSE Submitted 1 Dec 2025 91m away

    77% historically approved · decision due ~27 Jan

    Part single, part two storey front, side and rear extensions including alterations to front steps. new front porch and alterations to rear patio following demolition of existing garage and ground floor side and rear extension. Insertion of 1no. new first floor window to flank elevation.

    Awaiting decision Householder Extension Demolition +1 15 docs
    Small domestic

In Barnet

  • 26/3224/PNH Awaiting decision

    Low Ridge Rowley Lane Barnet EN5 3HS

    Single storey rear extension with a proposed depth of 8.00 metres, maximum height of 3.00 metres and eaves height of 3.00 metres.

    3 Sep 2026 Prior approval
  • 26/3218/PNH Awaiting decision

    22 Highcroft Gardens London NW11 0LX

    2no. Single storey rear extensions with a proposed depth of 6.00 metres, maximum height of 3.00 metres and eaves height of 3.00 metres, and depth of 3.05 metres, maximum height of 3.00 metres and eaves height of 3.00 metres respectively, following demolition of existing roofed patio.

    2 Sep 2026 Prior approval
  • 26/3212/PNH Awaiting decision

    10 Richmond Road Barnet EN5 1SB

    Single storey rear extension with a proposed depth of 5.54 metres, maximum height of 3.50 metres and eaves height of 3.00 metres.

    2 Sep 2026 Prior approval
  • 26/3183/PNH Awaiting decision

    34 Selvage Lane London NW7 3SP

    Single storey rear extension with a proposed depth of 3.80 metres, maximum height of 3.00 metres and eaves height of 2.75 metres, following partial demolition of existing side manifestation.

    1 Sep 2026 Prior approval
  • 26/3194/PNH Awaiting decision

    74 Windsor Drive Barnet EN4 8UD

    Single storey rear extension with a proposed depth of 6.00 metres, maximum height of 3.00 metres and eaves height of 2.60 metres, following demolition of the existing rear extension.

    31 Aug 2026 Prior approval