Postcode record · Harrow
HA1 4DX.
HA1 4DX has 49 known premises and 37 planning records — 26 approved of 28 decided (92.9%). 33 EPC records.
Postcode HA1 4DX · boundary not held, centred on the postcodeApprovedRefusedOther37 exact1 approximate38 on the map — every match
At a glance · this postcodeHarrow profile →
49
Premises
known addresses (UPRNs)
37
Applications
28 decided
92.9%
Approval rate
26 approved · 2 refused
33
EPC records
ratings C 12 · D 16 · E 5
38
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 4DX has 49 known premises and 37 planning records — 26 approved of 28 decided (92.9%). 33 EPC records.
Premises (18 of 49 shown)
Name
Details
UPRN 10002293363
UPRN 10002293365
UPRN 10091095681
UPRN 100021255554
UPRN 100021255555
UPRN 100021255556
UPRN 100021255557
UPRN 100021255558
UPRN 100021255559
UPRN 100021255560
UPRN 10002293363
UPRN 10002293365
UPRN 10091095681
Show all 10 rows
UPRN 100021255554
UPRN 100021255555
UPRN 100021255556
UPRN 100021255557
UPRN 100021255558
UPRN 100021255559
UPRN 100021255560
Planning
What happened?
37 planning applications across the postcode; 26 approved of 28 decided (92.9%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Single storey side extension; external alterations
157 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Householder
Pending Consideration
2026-05-01
Certificate of Lawful Development (Proposed): Wrap around rear dormer with Juliet balcony
157 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Certificate of Lawful Development Proposed
Pending Consideration
2026-05-01
Single storey rear extension with rooflight; External alterations (Demolition of rear extension)
149 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Householder
Pending Consideration
2026-04-24
Single storey side to rear extension; alterations to roof; side to rear dormer; two rooflights in front roofslope; external alterations
147 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Householder
Approved
2023-01-23
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Wrap-around dormer at rear and insertion of one rooflight in front roofslope
140 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Applicant Ms Nga Yee Joey Szeto · Officer ABS Abrar Sharif
Certificate of Lawful Development Existing
Approved
2021-10-26
Single storey side to rear extension (demolition of conservatory)
161 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Applicant Ms Shinh · Officer Fergus Freeney
Householder
Approved
2021-02-17
Certificate of lawful development (proposed): Alterations to roof to form wrap around dormer to rear and side roofslopes; installation of two rooflights in front roofslope
161 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Certificate of Lawful Development Existing
Approved
2021-01-29
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Wrap-a-round side to rear dormer; two rooflights in front roofslope
143 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Certificate of Lawful Development Existing
Approved
2020-01-15
Single storey rear infill extension ; external alterations
143 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Householder
Approved
2020-01-14
Certificate of lawful development (proposed): Alterations to roof to form wrap around dormer to side/rear roofslopes; installation of two rooflights in front roofslope and one to side roofslope; installation of window to rear gable end
131 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Certificate of Lawful Development Existing
Not required
2019-05-07
Single storey side extension; external alterations
157 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Pending Consideration
2026-05-01
More
Householder
Certificate of Lawful Development (Proposed): Wrap around rear dormer with Juliet balcony
157 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Pending Consideration
2026-05-01
More
Certificate of Lawful Development Proposed
Single storey rear extension with rooflight; External alterations (Demolition of rear extension)
149 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Pending Consideration
2026-04-24
More
Householder
Show all 10 rows
Single storey side to rear extension; alterations to roof; side to rear dormer; two rooflights in front roofslope; external alterations
147 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Approved
2023-01-23
More
Householder
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Wrap-around dormer at rear and insertion of one rooflight in front roofslope
140 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Applicant Ms Nga Yee Joey Szeto · Officer ABS Abrar Sharif
Approved
2021-10-26
More
Certificate of Lawful Development Existing
Single storey side to rear extension (demolition of conservatory)
161 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Applicant Ms Shinh · Officer Fergus Freeney
Approved
2021-02-17
More
Householder
Certificate of lawful development (proposed): Alterations to roof to form wrap around dormer to rear and side roofslopes; installation of two rooflights in front roofslope
161 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Approved
2021-01-29
More
Certificate of Lawful Development Existing
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Wrap-a-round side to rear dormer; two rooflights in front roofslope
143 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Approved
2020-01-15
More
Certificate of Lawful Development Existing
Single storey rear infill extension ; external alterations
143 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Approved
2020-01-14
More
Householder
Certificate of lawful development (proposed): Alterations to roof to form wrap around dormer to side/rear roofslopes; installation of two rooflights in front roofslope and one to side roofslope; installation of window to rear gable end
131 Butler Road, West Harrow, Harrow, HA1 4DX · premises record
Not required
2019-05-07
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).
Haverstock Close0 mButler Road0 mWilson Gardens0 mUrban Footpath 153 From West Harrow Recreation Ground Butler Road To Shaftesbury Avenue Entrance1 mDrury Road31 mHeath Road35 mSumner Road48 m
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 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 1 application
Applicant on 2 applications
Applicant on 1 application
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 precedent37 applications and 38 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy33 EPC records; ratings C: 12, D: 16, E: 5.
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.