Postcode record · Barnet
N12 9LH.
N12 9LH has 24 known premises and 29 planning records — 14 approved of 28 decided (50%). 10 EPC records.
Postcode N12 9LH · boundary not held, centred on the postcodeApprovedRefusedOther29 exact29 on the map — every match
At a glance · this postcodeBarnet profile →
24
Premises
known addresses (UPRNs)
29
Applications
28 decided
50%
Approval rate
14 approved · 9 refused
10
EPC records
ratings B 1 · C 2 · D 4 · E 3
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 9LH has 24 known premises and 29 planning records — 14 approved of 28 decided (50%). 10 EPC records.
Premises (18 of 24 shown)
Name
Details
UPRN 200045072
UPRN 200045344
UPRN 200045345
UPRN 200045346
UPRN 200045347
UPRN 200045348
UPRN 200045361
UPRN 200045375
UPRN 200045388
UPRN 200045390
UPRN 200045072
UPRN 200045344
UPRN 200045345
Show all 10 rows
UPRN 200045346
UPRN 200045347
UPRN 200045348
UPRN 200045361
UPRN 200045375
UPRN 200045388
UPRN 200045390
Planning
What happened?
29 planning applications across the postcode; 14 approved of 28 decided (50%). Latest 29 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Submission of details of conditions 5 (Pre-completion Sound Insulation Test Certificates) 6 (Refuse/recycling storage) 7 (Cycle parking/storage) 8 (Amenity space subdivision) pursuant to planning permission 22/4184/FUL dated 20/10/2022
121 Friern Park London N12 9LH · premises record
Conditions
Approved
2025-07-14
First floor extension to existing garage and conversion of the existing garage to provide 1no. self-contained unit. New front bay window. Associated cycle storage, refuse and recycling, and amenity space
121 Friern Park London N12 9LH · premises record
Full Application
Refused
2025-05-29
First floor extension to existing garage and conversion of the existing garage to provide 1no. self-contained unit. New front bay window. Associated cycle storage, refuse and recycling, and amenity space
121 Friern Park London N12 9LH · premises record
Full Application
Refused
2025-02-07
First floor extension to existing garage and conversion of the existing garage to provide 1no. self-contained unit. New front bay window. Associated cycle storage, refuse and recycling and amenity space
121 Friern Park London N12 9LH · premises record
Full Application
Withdrawn
2024-12-13
Roof extension involving hip to gable, rear dormer window, 2no. side and 2no. front facing rooflights and new side gable windows
115 Friern Park London N12 9LH · premises record
Proposed Lawful Development Certificate
Approved
2024-07-16
First floor extension to existing garage and conversion of the existing garage to provide 1no. self-contained
121 Friern Park London N12 9LH · premises record
Full Application
Refused
2024-07-08
Single storey rear extension. Roof extension involving hip to gable, rear dormer window, 2no. side and 2no. front facing rooflights and new side gable window
115 Friern Park London N12 9LH · premises record
Proposed Lawful Development Certificate
Refused
2024-04-29
Submission of details of condition 11 (Parking provision) pursuant to planning permission 22/4184/FUL dated 20/11/2022
121 Friern Park London N12 9LH · premises record
Conditions
Approved
2024-03-20
Erection of an outbuilding
121 Friern Park London N12 9LH · premises record
Proposed Lawful Development Certificate
Approved
2022-10-31
Conversion of the existing dwelling into 5no self-contained flats including part single, part two storey side extension. Associated parking, refuse/recycling storage, bicycle storage and amenity space
121 Friern Park London N12 9LH · premises record
Full Application
Refused
2022-08-15
Submission of details of conditions 5 (Pre-completion Sound Insulation Test Certificates) 6 (Refuse/recycling storage) 7 (Cycle parking/storage) 8 (Amenity space subdivision) pursuant to planning permission 22/4184/FUL dated 20/10/2022
121 Friern Park London N12 9LH · premises record
Approved
2025-07-14
More
Conditions
First floor extension to existing garage and conversion of the existing garage to provide 1no. self-contained unit. New front bay window. Associated cycle storage, refuse and recycling, and amenity space
121 Friern Park London N12 9LH · premises record
Refused
2025-05-29
More
Full Application
First floor extension to existing garage and conversion of the existing garage to provide 1no. self-contained unit. New front bay window. Associated cycle storage, refuse and recycling, and amenity space
121 Friern Park London N12 9LH · premises record
Refused
2025-02-07
More
Full Application
Show all 10 rows
First floor extension to existing garage and conversion of the existing garage to provide 1no. self-contained unit. New front bay window. Associated cycle storage, refuse and recycling and amenity space
121 Friern Park London N12 9LH · premises record
Withdrawn
2024-12-13
More
Full Application
Roof extension involving hip to gable, rear dormer window, 2no. side and 2no. front facing rooflights and new side gable windows
115 Friern Park London N12 9LH · premises record
Approved
2024-07-16
More
Proposed Lawful Development Certificate
First floor extension to existing garage and conversion of the existing garage to provide 1no. self-contained
121 Friern Park London N12 9LH · premises record
Refused
2024-07-08
More
Full Application
Single storey rear extension. Roof extension involving hip to gable, rear dormer window, 2no. side and 2no. front facing rooflights and new side gable window
115 Friern Park London N12 9LH · premises record
Refused
2024-04-29
More
Proposed Lawful Development Certificate
Submission of details of condition 11 (Parking provision) pursuant to planning permission 22/4184/FUL dated 20/11/2022
121 Friern Park London N12 9LH · premises record
Approved
2024-03-20
More
Conditions
Erection of an outbuilding
121 Friern Park London N12 9LH · premises record
Approved
2022-10-31
More
Proposed Lawful Development Certificate
Conversion of the existing dwelling into 5no self-contained flats including part single, part two storey side extension. Associated parking, refuse/recycling storage, bicycle storage and amenity space
121 Friern Park London N12 9LH · premises record
Refused
2022-08-15
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 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).
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 13 applications
Applicant on 2 applications
Agent on 13 applications
Agent on 2 applications
Case officer on 5 applications
Case officer on 4 applications
Case officer on 2 applications
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Applicant on 13 applications
Applicant on 2 applications
Agent on 13 applications
Show all 10 rows
Agent on 2 applications
Case officer on 5 applications
Case officer on 4 applications
Case officer on 2 applications
Case officer on 1 application
Case officer on 1 application
Case officer 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.
Energy10 EPC records; ratings B: 1, C: 2, D: 4, E: 3.
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.
2 intent signals recorded in this postcode
Appeal dismissed · 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.