31 Allandale Avenue London N3 3PY

26/1837/HSEHouseholder ApplicationApproved

Householder

Approved on 7 July 2026

10 conditions

Approximate site (title boundary)

Boundary © HM Land Registry, © Ordnance Survey · details

This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.

Proposal

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

Received: 15 May 2026
Council: London Borough of Barnet
Ward: Finchley Church End
Agent: Henry Planning Ltd

ReceivedReceived15 May
ValidatedValidated15 May
Consult.Consultation
TargetTarget Date10 Jul
DecidedDecided7 Jul

Decided in 53 days (council typically 56)

About this application

This is a full planning application for a rear extension at 31 Allandale Avenue London N3 3PY. Barnet has handled 4,516 applications of this type. This one was decided in 53 days, 3 days quicker than Barnet's typical decision time. The site is in 1 listed building nearby. There have been 7 other applications at this address. In the past year there have been 144 applications across Finchley Church End. We hold 1,017 applications in total for the N3 postcode area.

77% of full applications at London Borough of Barnet were approved. Across all application types, the council typically decides in about 8 weeks (median).

Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street

Application details

Postcode: N3 3PY
Application type: Householder Application
Scale / size: Small

Planning application dates

Date validated: 15 May 2026
Consultation expiry: 11 June 2026
Target decision date: 10 July 2026

Applicant and agent

Agent: Henry Planning Ltd
Agent address: 163 Church Hill Road East Barnet EN4 8PQ

Planning decision

Statutory period: 56 days

Publicity

Last advertised: 21 May 2026
Advertisement expiry: 11 June 2026
Site notice start: 21 May 2026
Site notice end: 11 June 2026

Additional information

Planning Portal ID: PP-14937916
Comments: 0
Documents: 18

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Conservation area: College FarmNext to the site
Article 4 direction: Article 4 Small Houses in Multiple Occupation (HMO) Area 1
Heritage at Risk Register: College Farm, FinchleyNext to the site
Flood zone 1: Low probability (rivers and sea)

Also checked, none recorded (21)

flood storage areas, listed buildings, tree preservation orders, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Associated applications

2026
29 Jul
Submission of details of condition 7 (Levels) 8 (Excavation for services) 9 (Tree Protection & Method…
ApprovedDischarge of conditions26/2799/CON
2026
15 May
Two storey side and rear extension with rear balcony with associated privacy screen and balustrade. Insertion…
This applicationApprovedFull26/1837/HSE

Planning history at this site

6 other applications at this property, newest first.

Source: Barnet

Contains public sector information from the Planning London Datahub, licensed under the Open Government Licence v3.0.

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For applicants and trades

For the applicant

Need an arboricultural method statement? Arboriculturists near this site

Condition 10 on the decision asks for this.

Adrian Salt And Pang Limited
5.4 miLONDON
RTPI
Trevor Heaps Arboricultural Consultancy Ltd.
5.6 miHarrow
LDA Design
7.5 miLondon
RTPI

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Nearest first, within 25 miles of the site. Every firm is listed free.

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