Postcode record · Barnet
N12 9NX.
N12 9NX has 9 known premises and 10 planning records — 9 approved of 10 decided (90%). 4 EPC records.
Postcode N12 9NX · boundary not held, centred on the postcodeApprovedRefusedOther10 exact10 on the map — every match
At a glance · this postcodeBarnet profile →
9
Premises
known addresses (UPRNs)
10
Applications
10 decided
90%
Approval rate
9 approved · 1 refused
4
EPC records
ratings C 1 · D 2 · F 1
10
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 9NX has 9 known premises and 10 planning records — 9 approved of 10 decided (90%). 4 EPC records.
Premises
Name
Details
UPRN 200045510
UPRN 200045513
UPRN 200045515
UPRN 200045517
UPRN 200045519
UPRN 200045521
UPRN 200045523
UPRN 200045525
UPRN 200204484
UPRN 200045510
UPRN 200045513
UPRN 200045515
Show all 9 rows
UPRN 200045517
UPRN 200045519
UPRN 200045521
UPRN 200045523
UPRN 200045525
UPRN 200204484
Planning
What happened?
10 planning applications across the postcode; 9 approved of 10 decided (90%). Latest 10 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Single storey rear extension following the demolition of the existing conservatory
1 Friern Watch Avenue London N12 9NX · premises record
Proposed Lawful Development Certificate
Approved
2024-03-20
Single storey front/side garage extension
13 Friern Watch Avenue London N12 9NX · premises record
Householder Application
Approved
2022-07-28
Single storey side and rear extension
13 Friern Watch Avenue London N12 9NX · premises record
Householder Application
Approved
2021-08-11
Use of Dwellinghouse as Class C3(b) for up to 6 people
11 Friern Watch Avenue London N12 9NX · premises record
Proposed Lawful Development Certificate
Approved
2021-03-22
Part single part two storey side extension
13 Friern Watch Avenue London N12 9NX · premises record
Householder Application
Refused
2020-07-08
Single storey rear extension
3 Friern Watch Avenue London N12 9NX · premises record
Proposed Lawful Development Certificate
Approved
2016-04-22
Roof extension including hip to gable end with 2no. rear dormer windows and 3no. rooflights to the front elevation to facilitate a loft conversion.
3 Friern Watch Avenue, London, N12 9NX · premises record
Proposed Lawful Development Certificate
Approved
2011-11-09
Formation of new garage in rear garden, following demolition of existing garden shed.
3 Friern Watch Avenue, London, N12 9NX · premises record
Full Application
Approved
2011-02-04
Conversion of loft space to provide additional accommodation for upper flat.
9A Friern Watch Avenue London N12 9NX · premises record
Applicant Mr M R Hume · Officer Jim Clark
Full Application
Approved
2000-04-10
Change of use of building from doctors'surgery to dwellinghouse.
1 Friern Watch Avenue London N12 · premises record
Applicant Not disclosed
Full Application
Approved
1997-01-02
Single storey rear extension following the demolition of the existing conservatory
1 Friern Watch Avenue London N12 9NX · premises record
Approved
2024-03-20
More
Proposed Lawful Development Certificate
Single storey front/side garage extension
13 Friern Watch Avenue London N12 9NX · premises record
Approved
2022-07-28
More
Householder Application
Single storey side and rear extension
13 Friern Watch Avenue London N12 9NX · premises record
Approved
2021-08-11
More
Householder Application
Show all 10 rows
Use of Dwellinghouse as Class C3(b) for up to 6 people
11 Friern Watch Avenue London N12 9NX · premises record
Approved
2021-03-22
More
Proposed Lawful Development Certificate
Part single part two storey side extension
13 Friern Watch Avenue London N12 9NX · premises record
Refused
2020-07-08
More
Householder Application
Single storey rear extension
3 Friern Watch Avenue London N12 9NX · premises record
Approved
2016-04-22
More
Proposed Lawful Development Certificate
Roof extension including hip to gable end with 2no. rear dormer windows and 3no. rooflights to the front elevation to facilitate a loft conversion.
3 Friern Watch Avenue, London, N12 9NX · premises record
Approved
2011-11-09
More
Proposed Lawful Development Certificate
Formation of new garage in rear garden, following demolition of existing garden shed.
3 Friern Watch Avenue, London, N12 9NX · premises record
Approved
2011-02-04
More
Full Application
Conversion of loft space to provide additional accommodation for upper flat.
9A Friern Watch Avenue London N12 9NX · premises record
Applicant Mr M R Hume · Officer Jim Clark
Approved
2000-04-10
More
Full Application
Change of use of building from doctors'surgery to dwellinghouse.
1 Friern Watch Avenue London N12 · premises record
Applicant Not disclosed
Approved
1997-01-02
More
Full Application
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 9 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 9 of 9 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 9 of 9 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).
People
Who is involved?
Named on the latest 10 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
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
Agent on 2 applications
Applicant on 2 applications
Applicant on 1 application
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
Agent on 2 applications
Development
What could it become?
Planning precedent10 applications and 10 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy4 EPC records; ratings C: 1, D: 2, 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
The Developer PlanOwnership, finance and market signals recorded at addresses in this postcode — each with date and source. Signals are evidence of change, not a prediction.
4 intent signals recorded in this postcode
Portfolio seller · EPC F/G · Long hold
Subscribe to see the signals →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.