Postcode record · Harrow
HA1 4NJ.
HA1 4NJ has 15 known premises and 18 planning records — 13 approved of 15 decided (86.7%). 10 EPC records.
Postcode HA1 4NJ · boundary not held, centred on the postcodeApprovedRefusedOther18 exact18 on the map — every match
At a glance · this postcodeHarrow profile →
15
Premises
known addresses (UPRNs)
18
Applications
15 decided
86.7%
Approval rate
13 approved · 2 refused
10
EPC records
ratings C 2 · D 5 · E 3
18
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?
HA1 4NJ has 15 known premises and 18 planning records — 13 approved of 15 decided (86.7%). 10 EPC records.
Premises
Name
Details
UPRN 100021289182
UPRN 100021289185
UPRN 100021289188
UPRN 100021289190
UPRN 100021289192
UPRN 100021289194
UPRN 100021289196
UPRN 100021289198
UPRN 100021289199
UPRN 100021289201
UPRN 100021289182
UPRN 100021289185
UPRN 100021289188
Show all 10 rows
UPRN 100021289190
UPRN 100021289192
UPRN 100021289194
UPRN 100021289196
UPRN 100021289198
UPRN 100021289199
UPRN 100021289201
Planning
What happened?
18 planning applications across the postcode; 13 approved of 15 decided (86.7%). Latest 18 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Single storey side infill and rear extension; external alterations (demolition of rear extension and conservatory)
15 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Full Planning Application
Approved
2026-03-12
Change of use from dwellinghouse (Class C3) to Residential home (Class C2) for up to three children and five adults
23 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Full Planning Application
Withdrawn
2025-11-11
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Outbuilding at rear for use as gym / storage
3 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Certificate of Lawful Development Existing
Approved
2021-10-04
Single storey rear infill extension to create habitable space for ground floor flat (Demolition of single storey rear extension)
15 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Householder
Approved
2020-09-14
Single Storey Rear Extension: 4.00 metres deep, 4.00 metres maximum height, 3.00 metres high to the eaves
11 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Prior Notification - Larger Home Extension
Withdrawn
2020-02-18
Single Storey Rear Extension: 4.00 metres deep, 4.00 metres maximum height, 3.00 metres high to the eaves
11 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Prior Notification - Larger Home Extension
Not required
2020-02-13
Single Storey Rear Extension: 4.2 Metres deep, 4 Metres maximum height and 2.95 Metres high to the eaves
5 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Prior Notification - Larger Home Extension
Approved
2013-09-12
SINGLE STOREY REAR EXTENSION
5 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Householder
Refused
2012-12-10
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): SINGLE STOREY REAR EXTENSION
23 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Certificate of Lawful Development Existing
Approved
2012-06-26
SINGLE STOREY REAR EXTENSION
23 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Householder
Approved
2012-06-26
Single storey side infill and rear extension; external alterations (demolition of rear extension and conservatory)
15 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Approved
2026-03-12
More
Full Planning Application
Change of use from dwellinghouse (Class C3) to Residential home (Class C2) for up to three children and five adults
23 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Withdrawn
2025-11-11
More
Full Planning Application
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Outbuilding at rear for use as gym / storage
3 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Approved
2021-10-04
More
Certificate of Lawful Development Existing
Show all 10 rows
Single storey rear infill extension to create habitable space for ground floor flat (Demolition of single storey rear extension)
15 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Approved
2020-09-14
More
Householder
Single Storey Rear Extension: 4.00 metres deep, 4.00 metres maximum height, 3.00 metres high to the eaves
11 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Withdrawn
2020-02-18
More
Prior Notification - Larger Home Extension
Single Storey Rear Extension: 4.00 metres deep, 4.00 metres maximum height, 3.00 metres high to the eaves
11 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Not required
2020-02-13
More
Prior Notification - Larger Home Extension
Single Storey Rear Extension: 4.2 Metres deep, 4 Metres maximum height and 2.95 Metres high to the eaves
5 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Approved
2013-09-12
More
Prior Notification - Larger Home Extension
SINGLE STOREY REAR EXTENSION
5 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Refused
2012-12-10
More
Householder
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): SINGLE STOREY REAR EXTENSION
23 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Approved
2012-06-26
More
Certificate of Lawful Development Existing
SINGLE STOREY REAR EXTENSION
23 Surrey Road, North Harrow, Harrow, HA1 4NJ · premises record
Approved
2012-06-26
More
Householder
Building control
Building-control records are not yet collected for Harrow — the register is being gathered borough by borough (held so far: Lambeth, Brent, Ealing, Westminster, City and others).
Place
What affects it?
No mapped designation intersects a premises point in this postcode in the current build. Open any premises above for its own designation record.
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 18 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 precedent18 applications and 18 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy10 EPC records; ratings C: 2, D: 5, 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
The Developer PlanOwnership, 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.