Postcode record · Barnet
NW4 1AH.
NW4 1AH has 26 known premises and 47 planning records — 30 approved of 47 decided (63.8%). 16 EPC records.
Postcode NW4 1AH · boundary not held, centred on the postcodeApprovedRefusedOther47 exact3 approximate50 on the map — every match
At a glance · this postcodeBarnet profile →
26
Premises
known addresses (UPRNs)
47
Applications
47 decided
63.8%
Approval rate
30 approved · 11 refused
16
EPC records
ratings C 3 · D 8 · E 4 · F 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?
NW4 1AH has 26 known premises and 47 planning records — 30 approved of 47 decided (63.8%). 16 EPC records.
Premises (18 of 26 shown)
Name
Details
UPRN 200034084
UPRN 200034086
UPRN 200034088
UPRN 200034090
UPRN 200034092
UPRN 200034094
UPRN 200034096
UPRN 200034098
UPRN 200034100
UPRN 200034102
UPRN 200034084
UPRN 200034086
UPRN 200034088
Show all 10 rows
UPRN 200034090
UPRN 200034092
UPRN 200034094
UPRN 200034096
UPRN 200034098
UPRN 200034100
UPRN 200034102
Planning
What happened?
47 planning applications across the postcode; 30 approved of 47 decided (63.8%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Erection of a single storey side/rear extension including the insertion of rooflights following the demolition of the existing conservatory. Conversion of the garage into a habitable room including new window to replace existing door. Alterations to front elevation fenestration including enlargement of windows. Insertion of a new obscure glazed window on the first floor flank elevation facing No 34
36 Downage London NW4 1AH · premises record
Householder Application
Approved
2025-01-30
Roof extension involving new dormer window to front elevation
60 Downage London NW4 1AH · premises record
Householder Application
Approved
2023-05-04
Erection of a part single, part two-storey front, side and rear extension including new front porch, alterations to the pitch of the roof including the insertion of roof lights and the creation of side and rear dormer windows to facilitate a loft conversion and the creation of a basement under the footprint of the house including rear light wells. Alterations to the front and rear elevation
28 Downage London NW4 1AH · premises record
Householder Application
Approved
2023-02-17
Part single, part two storey front, side and rear extensions with new patio area following demolition of the existing garage and lean to. Alteration to the bay windows. Roof extension involving side and rear dormers
50 Downage London NW4 1AH · premises record
Householder Application
Approved
2023-02-02
Part single, part two storey extension following removal of chimney. Roof extension involving side dormers, 2no front facing rooflights and 3no rear facing rooflights. Front porch extension
56 Downage London NW4 1AH · premises record
Householder Application
Approved
2022-06-08
Partial demolition of the existing property (including retention of one side wall, part of the front wall and various internal walls) and erection of a part single, part two-storey front, side and rear extension. Creation of a basement under the footprint of the house including rear lightwell. New front porch. Roof extension including alteration to the pitch of the roof and side and rear dormer windows and rooflights
28 Downage London NW4 1AH · premises record
Full Application
Approved
2022-05-04
Two storey rear extension. Front porch extension
56 Downage London NW4 1AH · premises record
Householder Application
Approved
2022-05-04
Roof extension involving rear dormer window, raising of side gables and 4no. front and 2no. rear facing rooflights
56 Downage London NW4 1AH · premises record
Proposed Lawful Development Certificate
Approved
2022-04-20
Two storey side extension with side access following demolition of existing garage. Part single, part two storey rear extension with new raised patio area. New front porch with pitched roof across the porch and bay window. New bay windows to the front and rear. Alterations to front, side, and rear fenestration including enlargement of windows. (amended description).
60 Downage London NW4 1AH · premises record
Householder Application
Approved
2022-04-01
Single storey rear extension with a proposed depth of 6.00 metres from original rear wall, maximum height of 3.00 metres and eaves height of 3.00 metres.
56 Downage London NW4 1AH · premises record
Prior Notification (Householder)
Refused
2022-03-15
Erection of a single storey side/rear extension including the insertion of rooflights following the demolition of the existing conservatory. Conversion of the garage into a habitable room including new window to replace existing door. Alterations to front elevation fenestration including enlargement of windows. Insertion of a new obscure glazed window on the first floor flank elevation facing No 34
36 Downage London NW4 1AH · premises record
Approved
2025-01-30
More
Householder Application
Roof extension involving new dormer window to front elevation
60 Downage London NW4 1AH · premises record
Approved
2023-05-04
More
Householder Application
Erection of a part single, part two-storey front, side and rear extension including new front porch, alterations to the pitch of the roof including the insertion of roof lights and the creation of side and rear dormer windows to facilitate a loft conversion and the creation of a basement under the footprint of the house including rear light wells. Alterations to the front and rear elevation
28 Downage London NW4 1AH · premises record
Approved
2023-02-17
More
Householder Application
Show all 10 rows
Part single, part two storey front, side and rear extensions with new patio area following demolition of the existing garage and lean to. Alteration to the bay windows. Roof extension involving side and rear dormers
50 Downage London NW4 1AH · premises record
Approved
2023-02-02
More
Householder Application
Part single, part two storey extension following removal of chimney. Roof extension involving side dormers, 2no front facing rooflights and 3no rear facing rooflights. Front porch extension
56 Downage London NW4 1AH · premises record
Approved
2022-06-08
More
Householder Application
Partial demolition of the existing property (including retention of one side wall, part of the front wall and various internal walls) and erection of a part single, part two-storey front, side and rear extension. Creation of a basement under the footprint of the house including rear lightwell. New front porch. Roof extension including alteration to the pitch of the roof and side and rear dormer windows and rooflights
28 Downage London NW4 1AH · premises record
Approved
2022-05-04
More
Full Application
Two storey rear extension. Front porch extension
56 Downage London NW4 1AH · premises record
Approved
2022-05-04
More
Householder Application
Roof extension involving rear dormer window, raising of side gables and 4no. front and 2no. rear facing rooflights
56 Downage London NW4 1AH · premises record
Approved
2022-04-20
More
Proposed Lawful Development Certificate
Two storey side extension with side access following demolition of existing garage. Part single, part two storey rear extension with new raised patio area. New front porch with pitched roof across the porch and bay window. New bay windows to the front and rear. Alterations to front, side, and rear fenestration including enlargement of windows. (amended description).
60 Downage London NW4 1AH · premises record
Approved
2022-04-01
More
Householder Application
Single storey rear extension with a proposed depth of 6.00 metres from original rear wall, maximum height of 3.00 metres and eaves height of 3.00 metres.
56 Downage London NW4 1AH · premises record
Refused
2022-03-15
More
Prior Notification (Householder)
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 26 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 Small Houses in Multiple Occupation (HMO) Area 1 · reference A4D14A1 · covers 26 of 26 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 26 of 26 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 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 3 applications
Applicant on 3 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 precedent47 applications and 50 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy16 EPC records; ratings C: 3, D: 8, E: 4, 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.
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.