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Planning application

31 Allandale Avenue London N3 3PY

Granted Barnet 26/1837/HSE Householder Application

Works: Extension Loft or dormer 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

Two storey side and rear extension with rear balcony with associated privacy screen and balustrade. Insertion of 3no. front facing rooflights

As published by the council, reference 26/1837/HSE

Application record

Reference
26/1837/HSE
Type
Householder Application
Status
Approved subject to conditions
Decision
Granted As published: Approve subject to conditions
Received
15 May 2026
Validated
15 May 2026
Decided
7 Jul 2026
Ward
Finchley Church End
Decision by
Delegated Decision
Postcode
N3 3PY

Site history

Applications at this address on the Barnet register

This site has had 6 applications since 2025: 2 approved, 2 refused.

  • 26/2799/CON Decided

    31 Allandale Avenue London N3 3PY

    Submission of details of condition 7 (Levels) 8 (Excavation for services) 9 (Tree Protection & Method Statement) 10 (Details of Foundations) pursuant to planning permission 26/1837/HSE dated 07/07/2026

    Submitted 29 Jul 2026
  • 26/1982/CON Awaiting decision

    31 Allandale Avenue London N3 3PY

    Submission of details of condition 7 (Levels) 8 (Excavation for Services) 9 (Tree Protection & Method Statement) 10 (Details of Foundations) pursuant to planning permission 26/0944/HSE dated 05/05/2026

    Submitted 28 May 2026 Conditions
  • 26/0944/HSE Granted

    31 Allandale Avenue London N3 3PY

    Two storey side and rear extension with rear balcony with associated privacy screen and balustrade. Insertion of 3no. front facing rooflights.

    Decided 5 May 2026 Householder
  • 25/4892/192 Refused

    31 Allandale Avenue London N3 3PY

    Erection of a rear outbuilding

    Decided 14 Jan 2026 Lawful development
  • 25/4168/192 Refused

    31 Allandale Avenue London N3 3PY

    Erection of a rear outbuilding

    Decided 19 Nov 2025 Lawful development

Timeline

Dates from the published record

  1. 15 May 2026

    Received by Barnet

  2. 7 Jul 2026

    Decision issued: Approve subject to conditions

  3. 25 Jul 2026

    Added to PlanIndex

Cases linked to this one on the register

1 later application on the register refers to this one:

  • 26/2799/CON Decided

    31 Allandale Avenue London N3 3PY

    Submission of details of condition 7 (Levels) 8 (Excavation for services) 9 (Tree Protection & Method Statement) 10 (Details of Foundations) pursuant to planning permission 26/1837/HSE dated 07/07/2026

    Submitted 29 Jul 2026

Who's behind it

Company information only, from the register and Companies House

henry planning ltd Agent, a planning consultancy registered in Barnet

Active · incorporated 2016 · Barnet

72 applications on PlanIndex · across 11 councils · 65% 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

19 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 7 July 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

  • 31 Allandale Avenue London N3 3PY

    26/0944/HSE Submitted 12 Mar 2026 50 yards away

    Two storey side and rear extension with rear balcony with associated privacy screen and balustrade. Insertion of 3no. front facing rooflights.

    Granted Householder Extension Loft or dormer 18 docs
    Domestic

  • 31 Allandale Avenue London N3 3PY

    26/1982/CON Submitted 28 May 2026 50 yards away

    93% historically approved · decision due ~23 Jul

    Submission of details of condition 7 (Levels) 8 (Excavation for Services) 9 (Tree Protection & Method Statement) 10 (Details of Foundations) pursuant to planning permission 26/0944/HSE dated 05/05/2026

    Awaiting decision Conditions Trees 7 docs

  • 31 Allandale Avenue London N3 3PY

    25/4892/192 Submitted 5 Dec 2025 50 yards away

    Erection of a rear outbuilding

    Refused Lawful development 6 docs

  • 31 Allandale Avenue London N3 3PY

    25/4168/192 Submitted 17 Oct 2025 50 yards away

    Erection of a rear outbuilding

    Refused Lawful development 6 docs

  • 31 Allandale Avenue London N3 3PY

    26/2799/CON Submitted 29 Jul 2026 50 yards away

    78% historically approved · decision due ~23 Sep

    Submission of details of condition 7 (Levels) 8 (Excavation for services) 9 (Tree Protection & Method Statement) 10 (Details of Foundations) pursuant to planning permission 26/1837/HSE dated 07/07/2026

    Decided Trees

  • 1-12 Voysey Close London N3 3TR

    TPP/0004/26 Submitted 4 Jan 2026 150 yards away

    2 x Dead Birch (applicants ref. Group 1) - Remove. Standing in Group G10 of Tree Preservation Order. 1 x Dead Robinia (applicants ref. T2) -Remove. Standing in Group G10 of Tree Preservation Order.

    Decided Trees 4 docs

In Barnet

  • 26/3963/HSE Awaiting decision

    97 Morphou Road London NW7 1BG

    Alteration and extension to roof including insertion 2no. side facing rooflights

    Received 2 Nov, published by the council 3 Nov 2026 Householder
  • 26/3953/HSE Awaiting decision

    51 Bedford Avenue Barnet EN5 2ER

    Single storey rear extension with flat roof, 1no. rooflight and new access steps following demolition of the existing conservatory. Removal of the rear chimney stack. Changes to ground floor north side fenestration

    2 Nov 2026 Householder
  • 26/3947/HSE Awaiting decision

    20 Fallow Court Avenue London N12 0EB

    Single storey side and rear extension

    30 Oct 2026 Householder
  • 26/3946/HSE Awaiting decision

    21 Selvage Lane London NW7 3SS

    Single storey front porch extension with pitched roof

    Received 30 Oct, published by the council 3 Nov 2026 Householder
  • 26/3950/HSE Awaiting decision

    113 Walmington Fold London N12 7LH

    Single storey rear extension with pitched gable roof. New Pergola. Installation of Air Source Heat Pump (ASHP)

    Received 30 Oct, published by the council 2 Nov 2026 Householder