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Planning application

57 Belmont Avenue Barnet EN4 9JS

Granted Barnet 25/4488/192 Proposed Lawful Development Certificate

Works: Extension Loft or dormer Windows or glazing

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

Proposal

Roof extension involving hip to gable, rear dormer window with juliette balcony, 2no. front facing rooflights and new side gable windows. Removal of existing chimney stack

As published by the council, reference 25/4488/192

Application record

Reference
25/4488/192
Type
Proposed Lawful Development Certificate
Status
Lawful
Decision
Granted As published: Lawful
Received
11 Nov 2025
Validated
12 Nov 2025
Decided
16 Dec 2025
Ward
East Barnet
Decision by
Delegated Decision
Postcode
EN4 9JS

Site history

Applications at this address on the Barnet register

This site has had 4 applications since 2025: 2 approved, 0 refused.

  • 26/3532/192 Granted

    57 Belmont Avenue Barnet EN4 9JS

    New front porch

    Decided 29 Sep 2026
  • 26/3012/192 Awaiting decision

    57 Belmont Avenue Barnet EN4 9JS

    New front porch

    Submitted 17 Aug 2026
  • 25/4792/HSE Awaiting decision

    57 Belmont Avenue Barnet EN4 9JS

    Single storey rear extension with pitched roof, 2no. rooflights and alterations to patio area and access steps

    Submitted 1 Dec 2025 Householder

Timeline

Dates from the published record

  1. 11 Nov 2025

    Received by Barnet

  2. 12 Nov 2025

    Validated

    Checked as complete and ready for consideration.

  3. 16 Dec 2025

    Decision issued: Lawful

  4. 10 Aug 2026

    Added to PlanIndex

Documents

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

5 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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Open the documents

What this grant of permission means

Barnet granted permission on 16 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 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

  • 57 Belmont Avenue Barnet EN4 9JS

    25/4792/HSE Submitted 1 Dec 2025 50 yards away

    77% historically approved · decision due ~2 Feb

    Single storey rear extension with pitched roof, 2no. rooflights and alterations to patio area and access steps

    Awaiting decision Householder Extension Loft or dormer 7 docs
    Small domestic
  • 65 Belmont Avenue Barnet EN4 9JS

    25/4508/HSE Submitted 12 Nov 2025 50 yards away

    77% historically approved · decision due ~8 Jan

    Single storey rear extension with new patio area, boundary fence/screen and associated access steps to garden level. New front porch. Roof extension involving rear dormer window and 2no. front facing rooflights (AMENDED DESCRIPTION AND AMENDED PLANS)

    Awaiting decision Householder Extension Loft or dormer +1 5 docs
    Small domestic
  • 17 Norrys Road Barnet EN4 9JX

    26/0875/192 Submitted 6 Mar 2026 100 yards away

    Roof extension involving gable end, rear dormer window and 1no. side and 3no. front facing rooflights

    Refused Lawful development Extension Loft or dormer +1 6 docs
  • 17 Norrys Road Barnet EN4 9JX

    26/1481/192 Submitted 21 Apr 2026 100 yards away

    Roof extension involving partial hip to gable, rear dormer window and 4no. front facing rooflights. New side window

    Granted Lawful development Extension Loft or dormer +1 6 docs
  • 59 Belmont Avenue Barnet EN4 9JS

    26/3305/192 Submitted 10 Sep 2026 150 yards away

    79% historically approved · decision due ~5 Nov

    New front porch

    Awaiting decision Extension
    Small domestic
  • 57 Belmont Avenue Barnet EN4 9JS

    26/3532/192 Submitted 29 Sep 2026 150 yards away

    New front porch

    Granted Extension
    Small domestic

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