Postcode record · Barnet
N12 9NU.
N12 9NU has 24 known premises and 50 planning records — 40 approved of 50 decided (80%). 15 EPC records.
Postcode N12 9NU · boundary not held, centred on the postcodeApprovedRefusedOther50 exact50 on the map — every match
At a glance · this postcodeBarnet profile →
24
Premises
known addresses (UPRNs)
50
Applications
50 decided
80%
Approval rate
40 approved · 7 refused
15
EPC records
ratings C 1 · D 10 · E 3 · F 1
50
Mapped applications
inside the postcode shape
Postcode unit boundary from Ordnance Survey; premises and applications inside it. Aggregates describe the area, not any single premises.
Property
What is it?
N12 9NU has 24 known premises and 50 planning records — 40 approved of 50 decided (80%). 15 EPC records.
Premises (18 of 24 shown)
Name
Details
UPRN 200045572
UPRN 200045574
UPRN 200045576
UPRN 200045578
UPRN 200045580
UPRN 200045582
UPRN 200045584
UPRN 200045586
UPRN 200045588
UPRN 200045590
UPRN 200045572
UPRN 200045574
UPRN 200045576
Show all 10 rows
UPRN 200045578
UPRN 200045580
UPRN 200045582
UPRN 200045584
UPRN 200045586
UPRN 200045588
UPRN 200045590
Planning
What happened?
50 planning applications across the postcode; 40 approved of 50 decided (80%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Single storey front extension with pitched roof
70 Friern Watch Avenue London N12 9NU · premises record
Applicant Jessica Loizou · Agent Humphreys & Sons - Architecture & Surveyors · Officer Joseph Parsons
Householder Application
Approved
2026-01-29
Single storey front and side extension following demolition of existing garage. Alterations to fenestration including new rear bi-fold doors and new first floor side window
82 Friern Watch Avenue London N12 9NU · premises record
Householder Application
Approved
2025-06-17
Roof extension involving hip to gable, rear dormer window, 3no. front facing rooflights and new side gable window. Erection of a rear outbuilding
82 Friern Watch Avenue London N12 9NU · premises record
Proposed Lawful Development Certificate
Approved
2025-06-16
Roof extension involving partial hip to gable with rear dormer window, juliette balcony. Part single part two storey rear and side extension incorporating new front porch (AMENDED DESCRIPTION)
66 Friern Watch Avenue London N12 9NU · premises record
Householder Application
Approved
2024-12-17
Addition of pitched roof to existing garage conversion
74 Friern Watch Avenue London N12 9NU · premises record
Applicant Mr Anton Miedziolka · Officer Eddie Millar
Householder Application
Approved
2023-05-02
Single storey side and rear extension with new patio area
62 Friern Watch Avenue London N12 9NU · premises record
Householder
Approved
2021-07-07
Roof extension involving hip to gable, rear dormer window, 1no front facing rooflight and new side gable window. Juliette balcony to first floor rear
62 Friern Watch Avenue London N12 9NU · premises record
Proposed Lawful Development Certificate
Approved
2021-07-07
1 x False Acacia (Robinia pseudoacacia) (applicant's ref. T2) - Remove deadwood only. T7 of Tree Preservation Order
40 Friern Watch Avenue London N12 9NU · premises record
Treeworks: Fell TPO tree(s)
Not required
2020-08-28
Roof extension involving hip to gable, rear dormer window with juliette balcony and 4no front facing rooflights
40 Friern Watch Avenue London N12 9NU · premises record
Proposed Lawful Development Certificate
Approved
2019-10-02
Non material amendment to planning permission 19/2289/HSE dated 01/07/19 for `Single storey side and rear extension with new access steps following demolition of the existing conservatory and garage.` Amendents to rear access steps and raised patio [amended description]
48 Friern Watch Avenue London N12 9NU · premises record
Applicant Mr & Mrs Sivagnanam · Agent Domus Architects and Project Managers Ltd · Officer Frances Haines
Non Material Amendment
Approved
2019-07-19
Single storey front extension with pitched roof
70 Friern Watch Avenue London N12 9NU · premises record
Applicant Jessica Loizou · Agent Humphreys & Sons - Architecture & Surveyors · Officer Joseph Parsons
Approved
2026-01-29
More
Householder Application
Single storey front and side extension following demolition of existing garage. Alterations to fenestration including new rear bi-fold doors and new first floor side window
82 Friern Watch Avenue London N12 9NU · premises record
Approved
2025-06-17
More
Householder Application
Roof extension involving hip to gable, rear dormer window, 3no. front facing rooflights and new side gable window. Erection of a rear outbuilding
82 Friern Watch Avenue London N12 9NU · premises record
Approved
2025-06-16
More
Proposed Lawful Development Certificate
Show all 10 rows
Roof extension involving partial hip to gable with rear dormer window, juliette balcony. Part single part two storey rear and side extension incorporating new front porch (AMENDED DESCRIPTION)
66 Friern Watch Avenue London N12 9NU · premises record
Approved
2024-12-17
More
Householder Application
Addition of pitched roof to existing garage conversion
74 Friern Watch Avenue London N12 9NU · premises record
Applicant Mr Anton Miedziolka · Officer Eddie Millar
Approved
2023-05-02
More
Householder Application
Single storey side and rear extension with new patio area
62 Friern Watch Avenue London N12 9NU · premises record
Approved
2021-07-07
More
Householder
Roof extension involving hip to gable, rear dormer window, 1no front facing rooflight and new side gable window. Juliette balcony to first floor rear
62 Friern Watch Avenue London N12 9NU · premises record
Approved
2021-07-07
More
Proposed Lawful Development Certificate
1 x False Acacia (Robinia pseudoacacia) (applicant's ref. T2) - Remove deadwood only. T7 of Tree Preservation Order
40 Friern Watch Avenue London N12 9NU · premises record
Not required
2020-08-28
More
Treeworks: Fell TPO tree(s)
Roof extension involving hip to gable, rear dormer window with juliette balcony and 4no front facing rooflights
40 Friern Watch Avenue London N12 9NU · premises record
Approved
2019-10-02
More
Proposed Lawful Development Certificate
Non material amendment to planning permission 19/2289/HSE dated 01/07/19 for `Single storey side and rear extension with new access steps following demolition of the existing conservatory and garage.` Amendents to rear access steps and raised patio [amended description]
48 Friern Watch Avenue London N12 9NU · premises record
Applicant Mr & Mrs Sivagnanam · Agent Domus Architects and Project Managers Ltd · Officer Frances Haines
Approved
2019-07-19
More
Non Material Amendment
Building control
Building-control records are not yet collected for Barnet — the register is being gathered borough by borough (held so far: Lambeth, Brent, Ealing, Westminster, City and others).
Place
What affects it?
Every mapped designation touching a premises in this postcode, with how many of its 24 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 24 of 24 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 24 of 24 premises. Some normally permitted changes may require planning permission.
Nearby postcodes and streets
Walk to the next area — linked where the Atlas has a record for it (pilot borough only for now).
Friern Watch Avenue0 mFriary Road0 mRavensdale Avenue44 mFootpath From Friary Road To Valley Avenue55 m
People
Who is involved?
Named on the latest 30 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Applicant on 3 applications
Applicant on 2 applications
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 3 applications
Applicant on 2 applications
Applicant on 1 application
Show all 10 rows
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Development
What could it become?
Planning precedent50 applications and 50 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy15 EPC records; ratings C: 1, D: 10, E: 3, F: 1.
What is not assertedNo capacity, value or ownership claim is made at area level; those belong to individual premises records and their evidence.
Intent signals
Planning Atlas ProOwnership, finance and market signals recorded at addresses in this postcode — each with date and source. Signals are evidence of change, not a prediction.
Thinking about a project here?
Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.