Postcode record · Harrow
HA3 6JY.
HA3 6JY has 10 known premises and 8 planning records — 4 approved of 8 decided (50%). 5 EPC records.
Postcode HA3 6JY · boundary not held, centred on the postcodeApprovedRefusedOther8 exact8 on the map — every match
At a glance · this postcodeHarrow profile →
10
Premises
known addresses (UPRNs)
8
Applications
8 decided
50%
Approval rate
4 approved · 4 refused
5
EPC records
ratings C 1 · D 4
8
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?
HA3 6JY has 10 known premises and 8 planning records — 4 approved of 8 decided (50%). 5 EPC records.
Premises
Name
Details
UPRN 10091096134
UPRN 100021253627
UPRN 100021253628
UPRN 100021253629
UPRN 100021253630
UPRN 100021253631
UPRN 100021253632
UPRN 100021253633
UPRN 100021253634
UPRN 100021253635
UPRN 10091096134
UPRN 100021253627
UPRN 100021253628
Show all 10 rows
UPRN 100021253629
UPRN 100021253630
UPRN 100021253631
UPRN 100021253632
UPRN 100021253633
UPRN 100021253634
UPRN 100021253635
Planning
What happened?
8 planning applications across the postcode; 4 approved of 8 decided (50%). Latest 8 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Conversion of dwelling into two flats (1 X 1 bed and 1 X 2 bed); single storey rear extension; bin and cycle stores (part retrospective)
4 Blackwell Close, Harrow Weald, Harrow, HA3 6JY · premises record
Full Planning Application
Refused
2022-09-06
Single storey rear extension; Alterations to first floor balcony door (Retrospective)
5 Blackwell Close, Harrow Weald, Harrow, HA3 6JY · premises record
Full Planning Application
Approved
2019-02-05
Single storey rear extension
5 Blackwell Close, Harrow Weald, Harrow, HA3 6JY · premises record
Householder
Approved
2016-11-21
Single storey rear extension
5 Blackwell Close, Harrow Weald, Harrow, HA3 6JY · premises record
Householder
Refused
2016-06-13
CONVERSION OF GARAGE TO HABITABLE ROOM; EXTERNAL ALTERATIONS TO FRONT ELEVATION.
5 Blackwell Close, Harrow Weald, Harrow, HA3 6JY · premises record
Full Planning Application
Approved
2010-04-29
CERTIFICATE OF LAWFUL PROPOSED DEVELOPMENT:SINGLE STOREY REAR EXTENSION
5 Blackwell Close, Harrow Weald, Harrow, HA3 6JY · premises record
Certificate of Lawful Development Existing
Refused
2010-04-28
SINGLE STOREY REAR EXTENSION AND CONVERSION OF GARAGE INTO HABITABLE ROOM WITH ALTERATIONS TO FRONT ELEVATION
5 Blackwell Close, Harrow Weald, Harrow, HA3 6JY · premises record
Full Planning Application
Refused
2010-02-11
CONCERSION OF GARAGE TO HABITABLE ROOM WITH EXTERNAL ALTERATIONS TO FRONT ELEVATION
9 Blackwell Close, Harrow Weald, Harrow, HA3 6JY · premises record
Full Planning Application
Approved
2007-12-03
Conversion of dwelling into two flats (1 X 1 bed and 1 X 2 bed); single storey rear extension; bin and cycle stores (part retrospective)
4 Blackwell Close, Harrow Weald, Harrow, HA3 6JY · premises record
Refused
2022-09-06
More
Full Planning Application
Single storey rear extension; Alterations to first floor balcony door (Retrospective)
5 Blackwell Close, Harrow Weald, Harrow, HA3 6JY · premises record
Approved
2019-02-05
More
Full Planning Application
Single storey rear extension
5 Blackwell Close, Harrow Weald, Harrow, HA3 6JY · premises record
Approved
2016-11-21
More
Householder
Show all 8 rows
Single storey rear extension
5 Blackwell Close, Harrow Weald, Harrow, HA3 6JY · premises record
Refused
2016-06-13
More
Householder
CONVERSION OF GARAGE TO HABITABLE ROOM; EXTERNAL ALTERATIONS TO FRONT ELEVATION.
5 Blackwell Close, Harrow Weald, Harrow, HA3 6JY · premises record
Approved
2010-04-29
More
Full Planning Application
CERTIFICATE OF LAWFUL PROPOSED DEVELOPMENT:SINGLE STOREY REAR EXTENSION
5 Blackwell Close, Harrow Weald, Harrow, HA3 6JY · premises record
Refused
2010-04-28
More
Certificate of Lawful Development Existing
SINGLE STOREY REAR EXTENSION AND CONVERSION OF GARAGE INTO HABITABLE ROOM WITH ALTERATIONS TO FRONT ELEVATION
5 Blackwell Close, Harrow Weald, Harrow, HA3 6JY · premises record
Refused
2010-02-11
More
Full Planning Application
CONCERSION OF GARAGE TO HABITABLE ROOM WITH EXTERNAL ALTERATIONS TO FRONT ELEVATION
9 Blackwell Close, Harrow Weald, Harrow, HA3 6JY · premises record
Approved
2007-12-03
More
Full Planning Application
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 8 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 1 application
Applicant on 1 application
Agent on 3 applications
Agent on 2 applications
Agent on 1 application
Agent on 1 application
Agent on 1 application
Case officer on 3 applications
Applicant on 3 applications
Applicant on 3 applications
Applicant on 1 application
Show all 10 rows
Applicant on 1 application
Agent on 3 applications
Agent on 2 applications
Agent on 1 application
Agent on 1 application
Agent on 1 application
Case officer on 3 applications
Development
What could it become?
Planning precedent8 applications and 8 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy5 EPC records; ratings C: 1, D: 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
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.