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Planning application

78 Lyonsdown Road Barnet EN5 1JL

Granted Barnet 26/1164/HSE Householder Application

Works: Extension Loft or dormer Windows or glazing Small 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 side and rear extension. Front porch extension. Roof extension involving hip to gable, rear dormer window with juliette balcony, 3no. front facing rooflights and new side gable window

As published by the council, reference 26/1164/HSE

Application record

Reference
26/1164/HSE
Type
Householder Application
Status
Approved subject to conditions
Decision
Granted As published: Approve subject to conditions
Received
26 Mar 2026
Validated
26 Mar 2026
Decided
18 May 2026
Ward
Barnet Vale
Decision by
Delegated Decision
Postcode
EN5 1JL

Site history

Applications at this address on the Barnet register

This site has had 2 applications since 2025: 1 approved, 0 refused.

  • 25/5114/192 Awaiting decision

    78 Lyonsdown Road Barnet EN5 1JL

    Removal and alteration of existing roof above existing two storey side. (Phase 1) Roof extension involving hip to gable, rear dormer with juliette balcony, 3no. front facing rooflights and new side gable window. (Phase 2)

    Submitted 19 Dec 2025 Lawful development

Timeline

Dates from the published record

  1. 26 Mar 2026

    Received by Barnet

  2. 18 May 2026

    Decision issued: Approve subject to conditions

  3. 25 Jul 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

CG Architects Agent, an architecture practice

59 applications on PlanIndex · across 11 councils · 85% granted

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Documents

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

14 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 18 May 2026, 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

  • 78 Lyonsdown Road Barnet EN5 1JL

    25/5114/192 Submitted 19 Dec 2025 50 yards away

    80% historically approved · decision due ~13 Feb

    Removal and alteration of existing roof above existing two storey side. (Phase 1) Roof extension involving hip to gable, rear dormer with juliette balcony, 3no. front facing rooflights and new side gable window. (Phase 2)

    Awaiting decision Lawful development Extension Loft or dormer +1 12 docs

  • 80 Lyonsdown Road Barnet EN5 1JL

    25/5100/HSE Submitted 18 Dec 2025 50 yards away

    77% historically approved · decision due ~13 Feb

    New front hardstanding and vehicular access to provide off-street parking. New front hard and soft landscaping and brick fence wall

    Awaiting decision Householder 7 docs
    Small domestic

  • 80 Lyonsdown Road Barnet EN5 1JL

    25/3389/HSE Submitted 13 Aug 2025 50 yards away

    Single storey rear extension. Two storey side infill extension. New front porch. Roof extension involving hip to gable, rear dormer window with juliette balcony and 3no. front facing rooflights. Changes to fenestration

    Granted Householder Extension Loft or dormer +1 14 docs
    Small domestic

  • 80 Lyonsdown Road Barnet EN5 1JL

    25/4882/HSE Submitted 5 Dec 2025 50 yards away

    Single storey rear extension. Two storey side infill extension. New front porch. Roof extension involving hip to gable, rear dormer window with juliette balcony and 3no. front facing rooflights. Changes to fenestration.

    Granted Householder Extension Loft or dormer +1 14 docs
    Small domestic

  • 83 Lyonsdown Road Barnet EN5 1JT

    TPP/0548/26 Submitted 10 Sep 2026 100 yards away

    79% historically approved · decision due ~5 Nov

    1 x Cedar (applicants ref. T1) - Complete removal to ground level. Standing in T30 of Tree Preservation Order.

    Awaiting decision Trees

  • 8 Hasluck Gardens Barnet EN5 1HT

    25/3384/S73 Submitted 13 Aug 2025 100 yards away

    Variation of condition 3 (Materials) pursuant to planning permission 24/0953/HSE dated 26/06/2024 for `Part single, part two storey side and rear extension with patio area. Single storey front extension. Replacement of front bay window bricks with cladding. Roof extension involving side and rear dormer windows, front and side facing rooflights and new side gable window` Amendments include change from red tiles to grey tiles

    Granted Conditions Extension Loft or dormer +1 6 docs
    Small domestic

In Barnet

  • 26/3422/HSE Awaiting decision

    Revelstroke 28 Totteridge Village London N20 8JN

    Construction of a swimming pool and associated hard and soft landscaping following demolition of the existing shed including new access steps. Alterations to the ground level. Replacement of an existing timber decking terrace with a paved terrace.

    18 Sep 2026 Householder
  • 26/3396/HSE Awaiting decision

    43 Dukes Avenue London N3 2DE

    Single storey rear, part two storey side extension with 1no. rooflight following the demolition of existing shed. Roof extension with rear dormer window, 1no. front, 3no. side facing rooflights and roof windows to the front and side roof slopes. Installation of solar panels to side elevation of roof

    17 Sep 2026 Householder
  • 26/3410/HSE Awaiting decision

    54 Ferney Road Barnet EN4 8LE

    Single storey rear extension with alteration to the raised terrace area including new access steps to garden

    17 Sep 2026 Householder
  • 26/3415/HSE Awaiting decision

    11 Downage London NW4 1AS

    Alterations and extensions to the roof including rear dormer window and the partial removal of the roof of the first floor rear extension, creation of a new crown roof over main roof and rear extension, 1no. front, 1no. side, 1no. rear facing rooflight and 1no. on crown roof

    Received 17 Sep, published by the council 18 Sep 2026 Householder
  • 26/3382/HSE Awaiting decision

    11 Layfield Crescent London NW4 3UJ

    Part single, part two storey rear extension with flat roof and 1no. skylight

    Received 16 Sep, published by the council 18 Sep 2026 Householder