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Planning application

20 Langton Avenue London N20 9DB

Granted Barnet 25/4435/HSE Householder Application

Works: Extension Loft or dormer Demolition 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 rear extension following demolition of the existing conservatory with 1no. flat rooflight

As published by the council, reference 25/4435/HSE

Application record

Reference
25/4435/HSE
Type
Householder Application
Status
Approved subject to conditions
Decision
Approve subject to conditions
Received
6 Nov 2025
Validated
6 Nov 2025
Decided
22 Dec 2025
Ward
Whetstone
Decision by
Delegated Decision
Postcode
N20 9DB

Timeline

Dates from the published record

  1. 6 Nov 2025

    Received by Barnet

  2. 22 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

Agent on file, registered in London

92 applications on PlanIndex · across 21 councils · 87% granted

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Documents

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

8 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 22 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 500 metres

  • 35 Buckingham Avenue London N20 9DG

    26/1735/HSE Submitted 8 May 2026 71m away

    77% historically approved · decision due ~8 Jul

    Single storey rear extension with new raised patio area with associated access steps and landscaping. Conversion of the existing garage into habitable room, insertion of window and door to replace the garage door. Roof extension involving rear dormer window and skylights. Replacement of existing windows. External wall insulation

    Awaiting decision Householder Extension Loft or dormer +1 6 docs
    Small domestic

  • 9 Temple Avenue London N20 9EJ

    25/3571/192 Submitted 28 Aug 2025 77m away

    Single storey rear extension following demolition of the existing conservatory and patio

    Decided Lawful development Extension Demolition 7 docs
    Small domestic

  • 9 Temple Avenue London N20 9EJ

    26/0851/HSE Submitted 6 Mar 2026 77m away

    Two storey side extension following demolition of existing single storey side projection. Single storey rear extension following demolition of existing conservatory. New raised patio and associated steps to garden. New front porch. Roof extension involving side and rear dormer windows, 1no. front facing rooflight and solar panels to side roof slope following demolition of 2no. chimneys to the rear

    Granted Householder Extension Loft or dormer +2 12 docs
    Small domestic

  • 9 Temple Avenue London N20 9EJ

    25/4116/HSE Submitted 13 Oct 2025 77m away

    Two storey side extension following demolition of existing single storey side projection. Single storey rear extension following demolition of existing conservatory. New raised patio and associated steps to garden. New front porch

    Granted Householder Extension Demolition 10 docs
    Small domestic

  • 9 Temple Avenue London N20 9EJ

    25/3348/192 Submitted 11 Aug 2025 81m away

    Single storey rear extension following the demolition of existing conservatory and patio

    Decided Lawful development Extension Demolition 7 docs
    Small domestic

  • 9 Temple Avenue London N20 9EJ

    25/4718/192 Submitted 25 Nov 2025 81m away

    Roof extension with side dormer,rear dormer window with juliette balcony and 1no. front facing rooflight and solar panels to side roof slope. Following demolition of 2 no. chimneys to the rear.

    Decided Lawful development Extension Loft or dormer +2 11 docs

In Barnet

  • 26/3249/HSE Awaiting decision

    19 Rushdene Avenue Barnet EN4 8EN

    New front vehicular access and hardstanding to provide off-street parking space. New retaining wall following demolition of the existing wall and raised planted beds

    7 Sep 2026 Householder
  • 26/3235/HSE Awaiting decision

    26 Mount Pleasant Barnet EN4 9HH

    Replace existing flat roof at ground floor rear elevation with pitched roof and 2no. rooflights

    4 Sep 2026 Householder
  • 26/3222/HSE Awaiting decision

    46 Michleham Down London N12 7JN

    Single storey side/rear extension with 3no. rooflights following demolition of the existing storage/utility structure. Changes to fenestration

    3 Sep 2026 Householder
  • 26/3219/HSE Awaiting decision

    53 Tudor Road Barnet EN5 5NW

    First floor rear extension with front and rear rooflights. Roof extension over existing garage

    2 Sep 2026 Householder
  • 26/3210/HSE Awaiting decision

    47 Pattison Road London NW2 2HL

    New front vehicular access to provide off-street parking. Removal of existing gate and shed, alterations to the existing front boundary wall and installation of close board fencing panels.

    2 Sep 2026 Householder