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40 Northiam London N12 7HJ

26/2250/HSEHouseholder ApplicationApproved
Householder

Approved on 5 August 2026

Council decision: Approve subject to conditionsDelegated (officer decision)5 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

Single storey side and rear extension including 3no. flat rooflights and alteration to the existing access steps following demolition of the side garage and rear outbuilding

Received
16 June 2026
Decision level
Delegated (officer decision)
Ward
Totteridge & Woodside
  1. Received16 Jun
  2. Validated16 Jun
  3. Consult.
  4. Target11 Aug
  5. Decided5 Aug

Decided in 50 days (council typically 56)

About this application

This is a full planning application for demolition at 40 Northiam London N12 7HJ. Barnet has handled 4,516 applications of this type. This one was decided in 50 days, 6 days quicker than Barnet's typical decision time. There have been 3 other applications at this address. In the past year there have been 139 applications across Totteridge & Woodside. We hold 795 applications in total for the N12 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.See what's approved near your address

Application details

Postcode
N12 7HJ
Application type
Householder Application
Scale / size
Small

Planning application dates

Date validated
16 June 2026
Consultation expiry
16 July 2026
Target decision date
11 August 2026

Applicant and agent

Agent
Adara
Architect profile
ADARA PLANNING LTD
Agent address
The Old House Totteridge Green London N20 8PA

Planning decision

Statutory period
56 days

Publicity

Site notice start
25 June 2026
Site notice end
16 July 2026

Additional information

Planning Portal ID
PP-15014710
Comments
0
Documents
5

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Article 4 direction: Article 4 Small Houses in Multiple Occupation (HMO) Area 1
  • Flood zone 1: Low probability (rivers and sea)
Also checked, none recorded (23)

flood storage areas, conservation areas, listed buildings, tree preservation orders, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, 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.

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

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

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.

Source: Barnet

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

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