Postcode record · Barnet
N3 3EX.
N3 3EX has 28 known premises and 50 planning records — 34 approved of 49 decided (69.4%). 13 EPC records.
Postcode N3 3EX · boundary not held, centred on the postcodeApprovedRefusedOther50 exact50 on the map — every match
At a glance · this postcodeBarnet profile →
28
Premises
known addresses (UPRNs)
50
Applications
49 decided
69.4%
Approval rate
34 approved · 11 refused
13
EPC records
ratings C 1 · D 8 · E 3 · G 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?
N3 3EX has 28 known premises and 50 planning records — 34 approved of 49 decided (69.4%). 13 EPC records.
Premises (18 of 28 shown)
Name
Details
UPRN 200063247
UPRN 200063248
UPRN 200063249
UPRN 200063250
UPRN 200063251
UPRN 200063252
UPRN 200063253
UPRN 200063254
UPRN 200063255
UPRN 200063256
UPRN 200063247
UPRN 200063248
UPRN 200063249
Show all 10 rows
UPRN 200063250
UPRN 200063251
UPRN 200063252
UPRN 200063253
UPRN 200063254
UPRN 200063255
UPRN 200063256
Planning
What happened?
50 planning applications across the postcode; 34 approved of 49 decided (69.4%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Single storey side extension used as 1no. self-contained residential unit
1 Highview Gardens London N3 3EX · premises record
Existing Lawful Development Certificate
Unknown
2026-05-13
Conversion of the existing garage into habitable room, insertion of window to replace garage door. Single storey rear extension. Changes to fenestration. Roof extension involving 2no. rear dormer windows and 6no. rooflights. Addition of 2no. parking spaces following alterations to the existing landscaping and paving
22 Highview Gardens London N3 3EX · premises record
Householder Application
Approved
2024-01-04
Enlargement of the existing rear dormer
9 Highview Gardens London N3 3EX · premises record
Householder Application
Approved
2022-12-02
Single storey rear extension with a green roof and rear patio following demolition of part existing rear extension. Erection of rear outbuilding with side patio. Roof alterations including installation of 18no solar panels to existing crown roof, reinstatement of roofline including 2no side facing rooflights. Alterations to the side flank wall (Amended Description)
26 Highview Gardens London N3 3EX · premises record
Householder
Approved
2022-08-02
Single storey rear extension. Construction of garden Building to create gym for use by owners. Reinstatement of roof pitch to original profile
26 Highview Gardens London N3 3EX · premises record
Proposed Lawful Development Certificate
Refused
2022-02-09
Roof alteration and extension involving side dormer window to both sides, 2no front and rear facing rooflights
3 Highview Gardens London N3 3EX · premises record
Householder Application
Approved
2021-07-27
Erection of a rear outbuilding
23 Highview Gardens London N3 3EX · premises record
Proposed Lawful Development Certificate
Approved
2021-05-27
Erection of a rear outbuilding
23 Highview Gardens London N3 3EX · premises record
Householder Application
Approved
2021-05-27
Extension to roof including rear dormer window and 2no front facing rooflights
16 Highview Gardens London N3 3EX · premises record
Proposed Lawful Development Certificate
Approved
2019-08-05
Part single, part two storey front, side and rear extension including conversion of garage to habitable room. Alterations to landscaping
16 Highview Gardens London N3 3EX · premises record
Householder Application
Approved
2019-04-10
Single storey side extension used as 1no. self-contained residential unit
1 Highview Gardens London N3 3EX · premises record
Unknown
2026-05-13
More
Existing Lawful Development Certificate
Conversion of the existing garage into habitable room, insertion of window to replace garage door. Single storey rear extension. Changes to fenestration. Roof extension involving 2no. rear dormer windows and 6no. rooflights. Addition of 2no. parking spaces following alterations to the existing landscaping and paving
22 Highview Gardens London N3 3EX · premises record
Approved
2024-01-04
More
Householder Application
Enlargement of the existing rear dormer
9 Highview Gardens London N3 3EX · premises record
Approved
2022-12-02
More
Householder Application
Show all 10 rows
Single storey rear extension with a green roof and rear patio following demolition of part existing rear extension. Erection of rear outbuilding with side patio. Roof alterations including installation of 18no solar panels to existing crown roof, reinstatement of roofline including 2no side facing rooflights. Alterations to the side flank wall (Amended Description)
26 Highview Gardens London N3 3EX · premises record
Approved
2022-08-02
More
Householder
Single storey rear extension. Construction of garden Building to create gym for use by owners. Reinstatement of roof pitch to original profile
26 Highview Gardens London N3 3EX · premises record
Refused
2022-02-09
More
Proposed Lawful Development Certificate
Roof alteration and extension involving side dormer window to both sides, 2no front and rear facing rooflights
3 Highview Gardens London N3 3EX · premises record
Approved
2021-07-27
More
Householder Application
Erection of a rear outbuilding
23 Highview Gardens London N3 3EX · premises record
Approved
2021-05-27
More
Proposed Lawful Development Certificate
Erection of a rear outbuilding
23 Highview Gardens London N3 3EX · premises record
Approved
2021-05-27
More
Householder Application
Extension to roof including rear dormer window and 2no front facing rooflights
16 Highview Gardens London N3 3EX · premises record
Approved
2019-08-05
More
Proposed Lawful Development Certificate
Part single, part two storey front, side and rear extension including conversion of garage to habitable room. Alterations to landscaping
16 Highview Gardens London N3 3EX · premises record
Approved
2019-04-10
More
Householder 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 28 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 28 of 28 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 28 of 28 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 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.
Energy13 EPC records; ratings C: 1, D: 8, E: 3, G: 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.