Postcode record · Barnet
N12 9NT.
N12 9NT has 20 known premises and 29 planning records — 19 approved of 29 decided (65.5%). 13 EPC records.
Postcode N12 9NT · boundary not held, centred on the postcodeApprovedRefusedOther29 exact29 on the map — every match
At a glance · this postcodeBarnet profile →
20
Premises
known addresses (UPRNs)
29
Applications
29 decided
65.5%
Approval rate
19 approved · 7 refused
13
EPC records
ratings C 2 · D 5 · E 5 · F 1
29
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 9NT has 20 known premises and 29 planning records — 19 approved of 29 decided (65.5%). 13 EPC records.
Premises (18 of 20 shown)
Name
Details
UPRN 200045507
UPRN 200045512
UPRN 200045514
UPRN 200045516
UPRN 200045518
UPRN 200045520
UPRN 200045522
UPRN 200045524
UPRN 200045526
UPRN 200045557
UPRN 200045507
UPRN 200045512
UPRN 200045514
Show all 10 rows
UPRN 200045516
UPRN 200045518
UPRN 200045520
UPRN 200045522
UPRN 200045524
UPRN 200045526
UPRN 200045557
Planning
What happened?
29 planning applications across the postcode; 19 approved of 29 decided (65.5%). Latest 29 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Replacement of existing rear extension roof with flat roof and alteration of existing patio (amended description)
14 Friern Watch Avenue London N12 9NT · premises record
Householder Application
Approved
2025-05-06
Single-storey rear extension with flat roof and rooflight. New roof to replace existing ground floor pitched roof with rooflights. New sliding doors to replace existing ground floor rear windows. Removal of two redundant chimney breasts. Alterations to raised rear patio and steps. New front porch
14 Friern Watch Avenue London N12 9NT · premises record
Householder Application
Withdrawn
2025-02-03
Single storey rear extension following demolition of existing rear extension
30 Friern Watch Avenue London N12 9NT · premises record
Applicant Mrs Maria Santos-Edgar · Agent Aivars Architects Ltd
Full Application
Approved
2017-01-05
Single storey rear extension and enlargement to side dormer to accommodate internal alterations
34 Friern Watch Avenue London N12 9NT · premises record
Proposed Lawful Development Certificate
Approved
2016-02-01
Roof extension involving hip to gable and rear dormer window to facilitate an extension to existing loft conversion.
12 Friern Watch Avenue, London, N12 9NT · premises record
Proposed Lawful Development Certificate
Approved
2014-01-16
Two storey side extension
2 Friern Watch Avenue, London, N12 9NT · premises record
Full Application
Approved
2010-04-30
Roof extension involving partial hip to gable rear dormer window to facilitate loft conversion.
26 Friern Watch Avenue, London, N12 9NT · premises record
Proposed Lawful Development Certificate
Approved
2010-04-14
Two storey side extension.
2 Friern Watch Avenue, London, N12 9NT · premises record
Householder Application
Approved
2010-01-28
Single storey side extension following demolition of the existing.
2 Friern Watch Avenue, London, N12 9NT · premises record
Householder Application
Approved
2010-01-04
Conversion of property into 2 No. self-contained flats with associated first floor side extension and minor alterations to fenestration.
2 Friern Watch Avenue London N12 9NT · premises record
Applicant Adam Sada · Officer Peter Alsop
Full Application
Approved
2005-08-11
Replacement of existing rear extension roof with flat roof and alteration of existing patio (amended description)
14 Friern Watch Avenue London N12 9NT · premises record
Approved
2025-05-06
More
Householder Application
Single-storey rear extension with flat roof and rooflight. New roof to replace existing ground floor pitched roof with rooflights. New sliding doors to replace existing ground floor rear windows. Removal of two redundant chimney breasts. Alterations to raised rear patio and steps. New front porch
14 Friern Watch Avenue London N12 9NT · premises record
Withdrawn
2025-02-03
More
Householder Application
Single storey rear extension following demolition of existing rear extension
30 Friern Watch Avenue London N12 9NT · premises record
Applicant Mrs Maria Santos-Edgar · Agent Aivars Architects Ltd
Approved
2017-01-05
More
Full Application
Show all 10 rows
Single storey rear extension and enlargement to side dormer to accommodate internal alterations
34 Friern Watch Avenue London N12 9NT · premises record
Approved
2016-02-01
More
Proposed Lawful Development Certificate
Roof extension involving hip to gable and rear dormer window to facilitate an extension to existing loft conversion.
12 Friern Watch Avenue, London, N12 9NT · premises record
Approved
2014-01-16
More
Proposed Lawful Development Certificate
Two storey side extension
2 Friern Watch Avenue, London, N12 9NT · premises record
Approved
2010-04-30
More
Full Application
Roof extension involving partial hip to gable rear dormer window to facilitate loft conversion.
26 Friern Watch Avenue, London, N12 9NT · premises record
Approved
2010-04-14
More
Proposed Lawful Development Certificate
Two storey side extension.
2 Friern Watch Avenue, London, N12 9NT · premises record
Approved
2010-01-28
More
Householder Application
Single storey side extension following demolition of the existing.
2 Friern Watch Avenue, London, N12 9NT · premises record
Approved
2010-01-04
More
Householder Application
Conversion of property into 2 No. self-contained flats with associated first floor side extension and minor alterations to fenestration.
2 Friern Watch Avenue London N12 9NT · premises record
Applicant Adam Sada · Officer Peter Alsop
Approved
2005-08-11
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 20 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 20 of 20 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 20 of 20 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 29 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 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 3 applications
Applicant on 2 applications
Applicant on 2 applications
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 precedent29 applications and 29 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy13 EPC records; ratings C: 2, D: 5, E: 5, 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.
5 intent signals recorded in this postcode
EPC F/G · Long hold · Ageing director
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.