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Planning application

31 Allandale Avenue London N3 3PY

Refused Barnet 25/4892/192 Proposed Lawful Development Certificate

Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.

Proposal

Erection of a rear outbuilding

As published by the council, reference 25/4892/192

Application record

Reference
25/4892/192
Type
Proposed Lawful Development Certificate
Status
Unlawful
Decision
Refused As published: Unlawful
Received
5 Dec 2025
Validated
5 Dec 2025
Decided
14 Jan 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
  • 26/1837/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 7 Jul 2026 Householder
  • 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
  • 25/4168/192 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. 5 Dec 2025

    Received by Barnet

  2. 14 Jan 2026

    Decision issued: Unlawful

  3. 10 Aug 2026

    Added to PlanIndex

Documents

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

6 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 this refusal means

Barnet refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. 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

  • 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

    26/1837/HSE Submitted 15 May 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 19 docs
    Domestic

  • 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

    79% 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

  • 26/2679/192 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