Postcode record · Barnet
N12 8NU.
N12 8NU has 37 known premises and 32 planning records — 17 approved of 32 decided (53.1%). 21 EPC records.
Postcode N12 8NU · boundary not held, centred on the postcodeApprovedRefusedOther35 exact35 on the map — every match
At a glance · this postcodeBarnet profile →
37
Premises
known addresses (UPRNs)
32
Applications
32 decided
53.1%
Approval rate
17 approved · 10 refused
21
EPC records
ratings B 1 · C 12 · D 4 · E 4
35
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 8NU has 37 known premises and 32 planning records — 17 approved of 32 decided (53.1%). 21 EPC records.
Premises (18 of 37 shown)
Name
Details
UPRN 200002631
UPRN 200002641
UPRN 200002684
UPRN 200002685
UPRN 200002686
UPRN 200002688
UPRN 200002689
UPRN 200002690
UPRN 200002691
UPRN 200002631
UPRN 200002641
UPRN 200002684
Show all 10 rows
UPRN 200002685
UPRN 200002686
UPRN 200002688
UPRN 200002689
UPRN 200002690
UPRN 200002691
Planning
What happened?
32 planning applications across the postcode; 17 approved of 32 decided (53.1%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Conversion of existing garage into habitable room, insertion of windows and door to replace garage door
16 Alexandra Grove London N12 8NU · premises record
Applicant Raphael Nelson · Officer Rish Mehan
Proposed Lawful Development Certificate
Approved
2025-09-08
Change of use of ground and first floor from Class B1 (Office) to (Class C3) 8 units. Associated cycle storage
Neptune House 2A Alexandra Grove London N12 8NU · premises record
Prior Notification (Class E to Resi)
Withdrawn
2024-04-23
Change of use from a C3 hostel comprising 6 self-contained units to supported accommodation for 16/17 year old children within the Youth Justice System, use class Sui Generis
1 Alexandra Grove London N12 8NU · premises record
Full Application
Approved
2022-07-11
Erection of outbuilding to house the installation of a free standing sprinkler tank housing. New external electrical cupboard. Replacement of all external windows and doors (amended drawings and description).
1 Alexandra Grove London N12 8NU · premises record
Full Application
Approved
2021-12-17
Conversion of existing garage to habitable rooms, insertion of 2no windows to replace the existing garage door. Roof extension involving 2No. hip to gable, 3no rear and 2no front facing rooflights
16 Alexandra Grove London N12 8NU · premises record
Proposed Lawful Development Certificate
Approved
2021-02-08
Roof extension involving hip to gable, insertion of 3no rear and 2no front facing rooflights. Conversion of the existing garage into habitable room, insertion of windows to replace the existing garage door
16 Alexandra Grove London N12 8NU · premises record
Proposed Lawful Development Certificate
Refused
2020-11-13
Use as 2no self-contained flats
Flat 4 And 4A 3 Alexandra Grove London N12 8NU · premises record
Existing Lawful Development Certificate
Approved
2019-08-09
Internal and external alterations to ground floor level
Neptune House 2A Alexandra Grove London N12 8NU · premises record
Applicant Mr P NEUMANN · Agent Alan Cox Associates
Full Application
Approved
2016-07-01
Change of use of ground and first floor from Class B1 (Office) to Class C3 (Residential) (8 Units)
Neptune House 2A Alexandra Grove London N12 8NU · premises record
Prior Notification (Office to Res)
Approved
2016-04-26
Conversion of studio/office room to residential space for use ancillary to main dwelling
5 Alexandra Grove London N12 8NU · premises record
Retention/Continued Use
Approved
2015-06-10
Conversion of existing garage into habitable room, insertion of windows and door to replace garage door
16 Alexandra Grove London N12 8NU · premises record
Applicant Raphael Nelson · Officer Rish Mehan
Approved
2025-09-08
More
Proposed Lawful Development Certificate
Change of use of ground and first floor from Class B1 (Office) to (Class C3) 8 units. Associated cycle storage
Neptune House 2A Alexandra Grove London N12 8NU · premises record
Withdrawn
2024-04-23
More
Prior Notification (Class E to Resi)
Change of use from a C3 hostel comprising 6 self-contained units to supported accommodation for 16/17 year old children within the Youth Justice System, use class Sui Generis
1 Alexandra Grove London N12 8NU · premises record
Approved
2022-07-11
More
Full Application
Show all 10 rows
Erection of outbuilding to house the installation of a free standing sprinkler tank housing. New external electrical cupboard. Replacement of all external windows and doors (amended drawings and description).
1 Alexandra Grove London N12 8NU · premises record
Approved
2021-12-17
More
Full Application
Conversion of existing garage to habitable rooms, insertion of 2no windows to replace the existing garage door. Roof extension involving 2No. hip to gable, 3no rear and 2no front facing rooflights
16 Alexandra Grove London N12 8NU · premises record
Approved
2021-02-08
More
Proposed Lawful Development Certificate
Roof extension involving hip to gable, insertion of 3no rear and 2no front facing rooflights. Conversion of the existing garage into habitable room, insertion of windows to replace the existing garage door
16 Alexandra Grove London N12 8NU · premises record
Refused
2020-11-13
More
Proposed Lawful Development Certificate
Use as 2no self-contained flats
Flat 4 And 4A 3 Alexandra Grove London N12 8NU · premises record
Approved
2019-08-09
More
Existing Lawful Development Certificate
Internal and external alterations to ground floor level
Neptune House 2A Alexandra Grove London N12 8NU · premises record
Applicant Mr P NEUMANN · Agent Alan Cox Associates
Approved
2016-07-01
More
Full Application
Change of use of ground and first floor from Class B1 (Office) to Class C3 (Residential) (8 Units)
Neptune House 2A Alexandra Grove London N12 8NU · premises record
Approved
2016-04-26
More
Prior Notification (Office to Res)
Conversion of studio/office room to residential space for use ancillary to main dwelling
5 Alexandra Grove London N12 8NU · premises record
Approved
2015-06-10
More
Retention/Continued Use
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 37 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 37 of 37 premises. Some normally permitted changes may require planning permission.
Archaeological Priority Area
The name Finchley originates from the Anglo-Saxon and is defined as Finch’s clearing. However, Finchley is first mentioned in the 13th century. It is suggested that Church End was the earliest settlement in Finchley and was probably in use from · reference 77939 · covers 7 of 37 premises. Groundworks may require archaeological assessment or investigation.
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 37 of 37 premises. Some normally permitted changes may require planning permission.
Archaeological Priority Area
The name Finchley originates from the Anglo-Saxon and is defined as Finch’s clearing. However, Finchley is first mentioned in the 13th century. It is suggested that Church End was the earliest settlement in Finchley and was probably in use from · reference 77939 · covers 7 of 37 premises. Groundworks may require archaeological assessment or investigation.
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 30 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
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 1 application
Applicant on 2 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 precedent32 applications and 35 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy21 EPC records; ratings B: 1, C: 12, D: 4, E: 4.
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.