Planning Atlas
AtlasPostcodeHA11SY
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Planning Atlas›Harrow›HA1 1SY
Postcode record · Harrow

HA1 1SY.

HA1 1SY has 55 known premises and 41 planning records — 23 approved of 41 decided (56.1%). 37 EPC records.

Postcode unitHarrow →OS boundary ↓
Harrow›HA1 1SY
Postcode HA1 1SY · boundary not held, centred on the postcodeApprovedRefusedOther41 on the map — every match
At a glance · this postcodeHarrow profile →
55
Premises
known addresses (UPRNs)
41
Applications
41 decided
56.1%
Approval rate
23 approved · 15 refused
37
EPC records
ratings C 11 · D 20 · E 6
41
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 1SY has 55 known premises and 41 planning records — 23 approved of 41 decided (56.1%). 37 EPC records.

Premises (18 of 55 shown)

Name
Details
UPRN 10010598116
UPRN 10010598125
UPRN 10070263424
UPRN 10070266181
UPRN 10091095736
UPRN 10094046909
UPRN 10094046910
UPRN 10094046911
UPRN 100021293142
UPRN 100021293144
UPRN 10010598116
UPRN 10010598125
UPRN 10070263424
Show all 10 rows
UPRN 10070266181
UPRN 10091095736
UPRN 10094046909
UPRN 10094046910
UPRN 10094046911
UPRN 100021293142
UPRN 100021293144
Planning

What happened?

41 planning applications across the postcode; 23 approved of 41 decided (56.1%). Latest 30 shown.

Reference
Proposal · address
Type
Outcome
Date · distance
Single storey rear extension to ground floor flat
14 Warrington Road, Harrow, HA1 1SY · premises record
Applicant Cyril Elliott · Officer Marcus Boddy
Full Planning Application
Approved
2025-10-28
Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 3.00 metres high to the eaves
50 Warrington Road, Harrow, HA1 1SY · premises record
Prior Notification - Larger Home Extension
Not required
2025-02-12
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Alterations and extension to roof to form end gable; two rear dormers; three rooflights in front roofslope; window in end gable
46 Warrington Road, Harrow, HA1 1SY · premises record
Certificate of Lawful Development Existing
Approved
2023-10-23
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Alterations and extension to roof to form end gable, two rear dormers, insertion of five rooflights in front roofslope and window in side of end gable
46 Warrington Road, Harrow, HA1 1SY · premises record
Certificate of Lawful Development Existing
Refused
2023-07-18
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Alterations and extension to roof to form end gable; rear dormer with Juliette balcony; five rooflights in front roofslope; window in end gable
46 Warrington Road, Harrow, HA1 1SY · premises record
Certificate of Lawful Development Existing
Refused
2023-05-05
Installation of two rooflights in front roofslope to create additional bedroom with ensuite bathroom to enlarge first floor flat.
6B Warrington Road, Harrow, HA1 1SY · premises record
Applicant Mr Brian Foody · Agent KDA Designs LTD · Officer Lee Connor
Full Planning Application
Approved
2023-03-08
Alterations and extension to roof to form end gable; rear dormer; five rooflights in front roofslope; window in end gable; external alterations
46 Warrington Road, Harrow, HA1 1SY · premises record
Householder
Refused
2023-01-04
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Rear dormer with juliet balcony
12 Warrington Road, Harrow, HA1 1SY · premises record
Certificate of Lawful Development Existing
Approved
2021-11-29
Certificate Of Lawful Development (Proposed): Alterations to roof to form end gable, rear dormer, insertion of two rooflights in front roofslope and window in side of end gable; Single storey rear extension
52 Warrington Road, Harrow, HA1 1SY · premises record
Applicant Mr and Mrs Carrasco · Agent DAC Design · Officer WILLHO Will Hossack
Certificate of Lawful Development Existing
Approved
2019-04-29
Certificate Of Lawful Development (Proposed): Alterations To Roof To Form Gable End; Installation of two velux twin terrace windows; installation of railings; Installation Of Two Rooflights In Front Roofslope And New Window In Side; Single Storey Rear Extension
52 Warrington Road, Harrow, HA1 1SY · premises record
Applicant Mr and Mrs Carrasco · Agent DAC Design · Officer AMIPL Amit Patel
Certificate of Lawful Development Existing
Refused
2018-08-15
Single storey rear extension to ground floor flat
14 Warrington Road, Harrow, HA1 1SY · premises record
Applicant Cyril Elliott · Officer Marcus Boddy
Approved
2025-10-28
More
Full Planning Application
Single storey rear extension: 6.00 metres deep, 3.00 metres maximum height and 3.00 metres high to the eaves
50 Warrington Road, Harrow, HA1 1SY · premises record
Not required
2025-02-12
More
Prior Notification - Larger Home Extension
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Alterations and extension to roof to form end gable; two rear dormers; three rooflights in front roofslope; window in end gable
46 Warrington Road, Harrow, HA1 1SY · premises record
Approved
2023-10-23
More
Certificate of Lawful Development Existing
Show all 10 rows
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Alterations and extension to roof to form end gable, two rear dormers, insertion of five rooflights in front roofslope and window in side of end gable
46 Warrington Road, Harrow, HA1 1SY · premises record
Refused
2023-07-18
More
Certificate of Lawful Development Existing
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Alterations and extension to roof to form end gable; rear dormer with Juliette balcony; five rooflights in front roofslope; window in end gable
46 Warrington Road, Harrow, HA1 1SY · premises record
Refused
2023-05-05
More
Certificate of Lawful Development Existing
Installation of two rooflights in front roofslope to create additional bedroom with ensuite bathroom to enlarge first floor flat.
6B Warrington Road, Harrow, HA1 1SY · premises record
Applicant Mr Brian Foody · Agent KDA Designs LTD · Officer Lee Connor
Approved
2023-03-08
More
Full Planning Application
Alterations and extension to roof to form end gable; rear dormer; five rooflights in front roofslope; window in end gable; external alterations
46 Warrington Road, Harrow, HA1 1SY · premises record
Refused
2023-01-04
More
Householder
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Rear dormer with juliet balcony
12 Warrington Road, Harrow, HA1 1SY · premises record
Approved
2021-11-29
More
Certificate of Lawful Development Existing
Certificate Of Lawful Development (Proposed): Alterations to roof to form end gable, rear dormer, insertion of two rooflights in front roofslope and window in side of end gable; Single storey rear extension
52 Warrington Road, Harrow, HA1 1SY · premises record
Applicant Mr and Mrs Carrasco · Agent DAC Design · Officer WILLHO Will Hossack
Approved
2019-04-29
More
Certificate of Lawful Development Existing
Certificate Of Lawful Development (Proposed): Alterations To Roof To Form Gable End; Installation of two velux twin terrace windows; installation of railings; Installation Of Two Rooflights In Front Roofslope And New Window In Side; Single Storey Rear Extension
52 Warrington Road, Harrow, HA1 1SY · premises record
Applicant Mr and Mrs Carrasco · Agent DAC Design · Officer AMIPL Amit Patel
Refused
2018-08-15
More
Certificate of Lawful Development Existing

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 30 applications in this postcode — the party who applied, not the owner or occupier.

Name
Details
Applicant on 4 applications
Applicant on 3 applications
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
Applicant on 4 applications
Applicant on 3 applications
Applicant on 3 applications
Show all 10 rows
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
Development

What could it become?

Planning precedent41 applications and 41 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy37 EPC records; ratings C: 11, D: 20, E: 6.
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 Pro

Ownership, finance and market signals recorded at addresses in this postcode — each with date and source. Signals are evidence of change, not a prediction.

14 intent signals recorded in this postcode
Portfolio seller · Repeat sale · Long hold
Subscribe to see the signals →
Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.