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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
Granted As published: 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

Discount Plans Ltd Agent, registered in London

Active · incorporated 2005 · London

125 applications on PlanIndex · across 25 councils · 90% 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 0.3 miles

  • 16 Langton Avenue London N20 9DB

    24/2162/CON Submitted 4 Jun 2024 50 yards away

    Submission of details of Conditions 4 (Green Roof) and 6 (Replacement Trees) pursuant to planning permission 21/6581/HSE dated 30/03/22

    Granted Conditions Trees 3 docs

  • 35 Buckingham Avenue London N20 9DG

    26/1735/HSE Submitted 8 May 2026 100 yards away

    Single storey rear extension with new 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 [Amended Description]

    Withdrawn Householder Extension Loft or dormer +1 9 docs
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  • 9 Temple Avenue London N20 9EJ

    25/3571/192 Submitted 28 Aug 2025 100 yards away

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

    Granted Lawful development Extension Demolition 7 docs
    Small domestic

  • 9 Temple Avenue London N20 9EJ

    26/0851/HSE Submitted 6 Mar 2026 100 yards 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 100 yards 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 100 yards away

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

    Granted Lawful development Extension Demolition 7 docs
    Small 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