Postcode record · Harrow
HA1 4AL.
HA1 4AL has 12 known premises and 12 planning records — 8 approved of 11 decided (72.7%). 5 EPC records.
Postcode HA1 4AL · boundary not held, centred on the postcodeApprovedRefusedOther12 exact12 on the map — every match
At a glance · this postcodeHarrow profile →
12
Premises
known addresses (UPRNs)
12
Applications
11 decided
72.7%
Approval rate
8 approved · 3 refused
5
EPC records
ratings C 1 · D 2 · E 1 · F 1
12
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 4AL has 12 known premises and 12 planning records — 8 approved of 11 decided (72.7%). 5 EPC records.
Premises
Name
Details
UPRN 100021291505
UPRN 100021291507
UPRN 100021291509
UPRN 100021291511
UPRN 100021291513
UPRN 100021291515
UPRN 100021291517
UPRN 100021291519
UPRN 100021291521
UPRN 100021291523
UPRN 100021291505
UPRN 100021291507
UPRN 100021291509
Show all 10 rows
UPRN 100021291511
UPRN 100021291513
UPRN 100021291515
UPRN 100021291517
UPRN 100021291519
UPRN 100021291521
UPRN 100021291523
Planning
What happened?
12 planning applications across the postcode; 8 approved of 11 decided (72.7%). Latest 12 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 2.90 metres high to the eaves
9 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Prior Notification - Larger Home Extension
Not required
2023-05-15
Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 2.90 metres high to the eaves
9 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Prior Notification - Larger Home Extension
Refused
2023-01-05
Single storey rear extension, conversion of existing garage to habitable space; external alterations
9 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Householder
Approved
2018-03-14
Single Storey Rear Extension: extending 4 metres beyond the original rear wall, 3 metres maximum height, 3 metres high to the eaves
13 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Prior Notification - Larger Home Extension
Approved
2018-02-06
Single Storey Rear Extension: extending 6 metres beyond the original rear wall, 3 metres maximum height, 2.9 metres high to the eaves
9 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Prior Notification - Larger Home Extension
Refused
2017-08-30
Single storey rear extension, first floor side extension and conversion of existing garage to habitable space; external alterations
9 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Householder
Refused
2017-05-22
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Rear dormer to create habitable roofspace with three rooflights to front roofslope; removal of window on first floor side elevation
13 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Certificate of Lawful Development Existing
Approved
2015-09-21
SINGLE STOREY SIDE TO REAR AND REAR EXTENSION (DEMOLITION OF GARAGE AND CONSERVATORY)
13 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Householder
Approved
2015-03-16
DETAILS PURSUANT TO CONDITION 2 (REVISED PLANS), ATTACHED TO PLANNING PERMISSION P/3866/13 DATED 24/02/2014 FOR 'SINGLE STOREY SIDE & REAR EXTENSIONS; REAR DORMER; EXTERNAL ALTERATIONS'
17 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Prior Approval (Miscellaneous Acts)
Approved
2014-03-06
SINGLE STOREY SIDE & REAR EXTENSIONS; REAR DORMER; EXTERNAL ALTERATIONS
17 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Householder
Approved
2013-12-09
Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 2.90 metres high to the eaves
9 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Not required
2023-05-15
More
Prior Notification - Larger Home Extension
Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 2.90 metres high to the eaves
9 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Refused
2023-01-05
More
Prior Notification - Larger Home Extension
Single storey rear extension, conversion of existing garage to habitable space; external alterations
9 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Approved
2018-03-14
More
Householder
Show all 10 rows
Single Storey Rear Extension: extending 4 metres beyond the original rear wall, 3 metres maximum height, 3 metres high to the eaves
13 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Approved
2018-02-06
More
Prior Notification - Larger Home Extension
Single Storey Rear Extension: extending 6 metres beyond the original rear wall, 3 metres maximum height, 2.9 metres high to the eaves
9 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Refused
2017-08-30
More
Prior Notification - Larger Home Extension
Single storey rear extension, first floor side extension and conversion of existing garage to habitable space; external alterations
9 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Refused
2017-05-22
More
Householder
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Rear dormer to create habitable roofspace with three rooflights to front roofslope; removal of window on first floor side elevation
13 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Approved
2015-09-21
More
Certificate of Lawful Development Existing
SINGLE STOREY SIDE TO REAR AND REAR EXTENSION (DEMOLITION OF GARAGE AND CONSERVATORY)
13 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Approved
2015-03-16
More
Householder
DETAILS PURSUANT TO CONDITION 2 (REVISED PLANS), ATTACHED TO PLANNING PERMISSION P/3866/13 DATED 24/02/2014 FOR 'SINGLE STOREY SIDE & REAR EXTENSIONS; REAR DORMER; EXTERNAL ALTERATIONS'
17 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Approved
2014-03-06
More
Prior Approval (Miscellaneous Acts)
SINGLE STOREY SIDE & REAR EXTENSIONS; REAR DORMER; EXTERNAL ALTERATIONS
17 Treve Avenue, West Harrow, Harrow, HA1 4AL · premises record
Approved
2013-12-09
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 12 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 2 applications
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Agent on 2 applications
Agent on 2 applications
Applicant on 3 applications
Applicant on 2 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
Agent on 2 applications
Agent on 2 applications
Development
What could it become?
Planning precedent12 applications and 12 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy5 EPC records; ratings C: 1, D: 2, E: 1, 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.