Postcode record · Harrow
HA1 1SB.
HA1 1SB has 46 known premises and 38 planning records — 25 approved of 34 decided (73.5%). 31 EPC records.
Postcode HA1 1SB · boundary not held, centred on the postcodeApprovedRefusedOther38 on the map — every match
At a glance · this postcodeHarrow profile →
46
Premises
known addresses (UPRNs)
38
Applications
34 decided
73.5%
Approval rate
25 approved · 9 refused
59 days
Median decision time
average 75 days · 34 dated decisions
31
EPC records
ratings C 3 · D 19 · E 9
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 1SB has 46 known premises and 38 planning records — 25 approved of 34 decided (73.5%). 31 EPC records.
Premises (18 of 46 shown)
Name
Details
UPRN 10070264382
UPRN 10070264927
UPRN 10095549767
UPRN 10095549768
UPRN 100021282451
UPRN 100021282452
UPRN 100021282454
UPRN 100021282455
UPRN 100021282456
UPRN 100021282457
UPRN 10070264382
UPRN 10070264927
UPRN 10095549767
Show all 10 rows
UPRN 10095549768
UPRN 100021282451
UPRN 100021282452
UPRN 100021282454
UPRN 100021282455
UPRN 100021282456
UPRN 100021282457
Planning
What happened?
38 planning applications across the postcode; 25 approved of 34 decided (73.5%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Certificate of lawful development (Proposed): Alterations to roof to form gable end; wrap around rear dormer; three roof lights in front roof slope
29 Radnor Avenue, Harrow, HA1 1SB · premises record
Officer Marcus Boddy
Certificate of Lawful Development Proposed
Approved
2025-10-27
Single storey rear extension, External alterations
29 Radnor Avenue, Harrow, HA1 1SB · premises record
Officer Marcus Boddy
Householder
Approved
2025-10-26
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Alterations to roof to form end gable, rear dormer with juliette balcony, insertion of three rooflights in front roofslope and window in side of end gable
29 Radnor Avenue, Harrow, HA1 1SB · premises record
Officer FEC Fernanda Calore
Certificate of Lawful Development Existing
Approved
2022-01-07
Alterations to roof to form end gable, rear dormer, insertion of two rooflights in front roofslope and window in side of end gable to create additional three bedrooms to first floor flat (1 x 4 Bed)
23A Radnor Avenue, Harrow, HA1 1SB · premises record
Officer Safwan Ahmed
Full Planning Application
Refused
2021-11-03
Conversion of property into two flats (2 x 2 bed); single storey rear extension; separate amenity space; bin and cycle stores (demolition of conservatory) [RECONSULTATION: Due to revised drawings)
33 Radnor Avenue, Harrow · premises record
Officer Fergus Freeney
Full Planning Application
Approved
2021-10-04
Single storey rear extension to enlarge ground floor flat to 3 bedroom flat.
4 Radnor Avenue, Harrow, HA1 1SB · premises record
Officer KAH Katie Hogendoorn
Full Planning Application
Approved
2021-04-14
Single storey side extension (demolition of store)
3 Radnor Avenue, Harrow, HA1 1SB · premises record
Officer BD Billie Dainton
Householder
Approved
2020-03-25
Alteration to roof forming dormer to side roof slope
13 Radnor Avenue, Harrow, HA1 1SB · premises record
Officer LPC Lap Pan Chong
Householder
Refused
2019-09-16
Householder
Withdrawn
2019-09-16
CERTIFICATE OF LAWFUL EXISTING DEVELOPMENT: Use of the house as a residental care home for 8 persons
33 Radnor Avenue, Harrow · premises record
Officer ON Olivier Nelson
Certificate of Lawful Development Existing
Refused
2017-12-14
Certificate of lawful development (Proposed): Alterations to roof to form gable end; wrap around rear dormer; three roof lights in front roof slope
29 Radnor Avenue, Harrow, HA1 1SB · premises record
Officer Marcus Boddy
Approved
2025-10-27
More
Certificate of Lawful Development Proposed
Single storey rear extension, External alterations
29 Radnor Avenue, Harrow, HA1 1SB · premises record
Officer Marcus Boddy
Approved
2025-10-26
More
Householder
CERTIFICATE OF LAWFUL DEVELOPMENT (PROPOSED): Alterations to roof to form end gable, rear dormer with juliette balcony, insertion of three rooflights in front roofslope and window in side of end gable
29 Radnor Avenue, Harrow, HA1 1SB · premises record
Officer FEC Fernanda Calore
Approved
2022-01-07
More
Certificate of Lawful Development Existing
Show all 10 rows
Alterations to roof to form end gable, rear dormer, insertion of two rooflights in front roofslope and window in side of end gable to create additional three bedrooms to first floor flat (1 x 4 Bed)
23A Radnor Avenue, Harrow, HA1 1SB · premises record
Officer Safwan Ahmed
Refused
2021-11-03
More
Full Planning Application
Conversion of property into two flats (2 x 2 bed); single storey rear extension; separate amenity space; bin and cycle stores (demolition of conservatory) [RECONSULTATION: Due to revised drawings)
33 Radnor Avenue, Harrow · premises record
Officer Fergus Freeney
Approved
2021-10-04
More
Full Planning Application
Single storey rear extension to enlarge ground floor flat to 3 bedroom flat.
4 Radnor Avenue, Harrow, HA1 1SB · premises record
Officer KAH Katie Hogendoorn
Approved
2021-04-14
More
Full Planning Application
Single storey side extension (demolition of store)
3 Radnor Avenue, Harrow, HA1 1SB · premises record
Officer BD Billie Dainton
Approved
2020-03-25
More
Householder
Alteration to roof forming dormer to side roof slope
13 Radnor Avenue, Harrow, HA1 1SB · premises record
Officer LPC Lap Pan Chong
Refused
2019-09-16
More
Householder
Withdrawn
2019-09-16
More
Householder
CERTIFICATE OF LAWFUL EXISTING DEVELOPMENT: Use of the house as a residental care home for 8 persons
33 Radnor Avenue, Harrow · premises record
Officer ON Olivier Nelson
Refused
2017-12-14
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).
Radnor Avenue6 mRugby Close8 mRadnor Road10 mUrban Footpath 115 From 53 Radnor Road To 22 Radnor Avenue12 mNibthwaite Road19 mLeys Close39 mLowick Road41 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
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Show all 10 rows
Case officer on 2 applications
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Development
What could it become?
Planning precedent38 applications and 38 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy31 EPC records; ratings C: 3, D: 19, E: 9.
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.
10 intent signals recorded in this postcode
Ageing director · Appeal dismissed · 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.