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Planning application

49 Heddon Court Avenue Barnet EN4 9NG

Awaiting decision Barnet 26/0133/192 Proposed Lawful Development Certificate

Works: Extension Loft or dormer Windows or glazing

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Removal of chimney on rear elevation and removal of pitched roof above existing two storey side extension (Phase 1) Roof extension involving hip to gable, rear dormer window with juliette balcony, 1no. front facing rooflight and side gable window (Phase 2 to commence when phase 1 completed) (AMENDED)

As published by the council, reference 26/0133/192

Application record

Reference
26/0133/192
Type
Proposed Lawful Development Certificate
Status
Pending Decision
Received
14 Jan 2026
Validated
14 Jan 2026
Ward
East Barnet
Postcode
EN4 9NG

Site history

Applications at this address on the Barnet register

This site has had 4 applications since 2026: 2 approved, 1 refused.

  • 26/1431/HSE Granted

    49 Heddon Court Avenue Barnet EN4 9NG

    Lower ground and ground floor rear extension including formation of rear balcony with privacy screens and underneath storage and associated access steps to garden level

    Decided 15 Jun 2026 Householder
  • 26/0599/HSE Granted

    49 Heddon Court Avenue Barnet EN4 9NG

    Roof extension involving rear dormer window with juliette balcony, 1no front facing rooflight and new side gable window with retention of existing side pitched roof

    Decided 14 Apr 2026 Householder
  • 26/0548/HSE Refused

    49 Heddon Court Avenue Barnet EN4 9NG

    Lower ground and ground floor rear extension including formation of rear balcony with privacy screens and underneath storage and associated access steps to garden level

    Decided 10 Apr 2026 Householder

Timeline

Dates from the published record

  1. 14 Jan 2026

    Received by Barnet

  2. 10 Aug 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 11 March 2026, 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.

Who's behind it

Company information only, from the register and Companies House

Alan Cox Associates Ltd Agent, registered in Barnet

Active · incorporated 2008 · Barnet

53 applications on PlanIndex · across 5 councils · 76% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

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 lawful development applications in a median of 28 days. More in our guide to how long planning decisions take.

About lawful development applications

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 49 Heddon Court Avenue Barnet EN4 9NG

    26/1431/HSE Submitted 17 Apr 2026 50 yards away

    Lower ground and ground floor rear extension including formation of rear balcony with privacy screens and underneath storage and associated access steps to garden level

    Granted Householder Extension 13 docs
    Domestic

  • 49 Heddon Court Avenue Barnet EN4 9NG

    26/0599/HSE Submitted 17 Feb 2026 50 yards away

    Roof extension involving rear dormer window with juliette balcony, 1no front facing rooflight and new side gable window with retention of existing side pitched roof

    Granted Householder Extension Loft or dormer +1 10 docs
    Domestic

  • 49 Heddon Court Avenue Barnet EN4 9NG

    26/0548/HSE Submitted 12 Feb 2026 50 yards away

    Lower ground and ground floor rear extension including formation of rear balcony with privacy screens and underneath storage and associated access steps to garden level

    Refused Householder Extension 12 docs
    Domestic

  • 84 Heddon Court Avenue, Barnet, EN4 9NG

    22/02939/OA Submitted 22 Aug 2022 50 yards away

    Erection of a rear outbuilding

    Granted 1 doc

  • 86 Ashurst Road Barnet EN4 9LG

    26/2443/HSE Submitted 26 Jun 2026 150 yards away

    77% historically approved · decision due ~24 Aug

    Single storey rear extension with new patio area. Conversion and extension of the existing garage into habitable room insertion of window to replace the garage door. New front porch

    Awaiting decision Householder Extension Windows or glazing 8 docs
    Small domestic

  • 92 Ashurst Road Barnet EN4 9LG

    26/1330/192 Submitted 10 Apr 2026 200 yards away

    80% historically approved · decision due ~5 Jun

    Phase 1: Removal and alteration to existing roof of existing two storey side extension. Phase 2: Roof extension involving hip to gable, rear dormer with Juliette balcony, 4no. front facing rooflights and new side gable window

    Awaiting decision Lawful development Extension Loft or dormer +1 10 docs

In Barnet

  • 26/2679/192 Granted

    21 Myddelton Park London N20 0JH

    Single storey rear extension and increase in ridge height of existing rear outrigger (Amended description).

    Received 20 Jul, published by the council 7 Aug 2026 Lawful development
  • 26/1362/191 Refused

    145 Cotswold Gardens London NW2 1PL

    Use as a House in Multiple Occupation (HMO) for 6 people

    Received 14 Apr, published by the council 25 Jul 2026 Lawful development
  • 26/1907/191 Granted

    8 Golders Manor Drive London NW11 9HT

    Use of the property as a self-contained residential unit at ground floor level and the first and second floors as a 4-bedroom, 4-person House in Multiple Occupation (Sui Generis) (AMENDED DESCRIPTION)

    Received 21 May, published by the council 16 Aug 2026 Lawful development
  • 26/2392/192 Refused

    6 Mostyn Road Edgware HA8 0JD

    New front hardstanding and vehicular access to provide off-street parking

    Received 23 Jun, published by the council 9 Aug 2026 Lawful development
  • 26/2059/192 Refused

    Low Ridge Rowley Lane Barnet EN5 3HS

    Erection of a rear outbuilding

    Received 3 Jun, published by the council 16 Aug 2026 Lawful development