Postcode record · Hillingdon
HA4 9SU.
HA4 9SU has 59 known premises and 29 planning records — 16 approved of 25 decided (64%). 36 EPC records.
Postcode HA4 9SU · boundary not held, centred on the postcodeApprovedRefusedOther29 exact2 approximate31 on the map — every match
At a glance · this postcodeHillingdon profile →
59
Premises
known addresses (UPRNs)
29
Applications
25 decided
64%
Approval rate
16 approved · 9 refused
36
EPC records
ratings C 19 · D 17
31
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?
HA4 9SU has 59 known premises and 29 planning records — 16 approved of 25 decided (64%). 36 EPC records.
Premises (18 of 59 shown)
Name
Details
UPRN 10022796967
UPRN 10025373391
UPRN 10092982801
UPRN 10092982869
UPRN 100021457227
UPRN 100021457228
UPRN 100021457229
UPRN 100021457230
UPRN 100021457231
UPRN 100021457232
UPRN 10022796967
UPRN 10025373391
UPRN 10092982801
Show all 10 rows
UPRN 10092982869
UPRN 100021457227
UPRN 100021457228
UPRN 100021457229
UPRN 100021457230
UPRN 100021457231
UPRN 100021457232
Planning
What happened?
29 planning applications across the postcode; 16 approved of 25 decided (64%). Latest 29 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
TPO 327 G2 1 x Field Maple to reduce spread by removing 2m
41 COLUMBIA AVENUE RUISLIP HA4 9SU · premises record
Tree Works (TPO)
Approved
2025-04-28
Conversion of roof space to habitable use to include a rear dormer and 4 front roof lights.
29 COLUMBIA AVENUE RUISLIP · premises record
Agent Mr Francesco Cortese · Officer Sharon Singh
Planning Application
Approved
2025-02-13
Erection of a part single storey, part two storey wraparound extension, installation of solar panels, following the demolition of existing garage and conservatory
28 COLUMBIA AVENUE RUISLIP · premises record
Planning Application
Refused
2024-05-09
Conversion of roof space to habitable use to include a rear dormer with juliette balcony, 1 front roof lights and conversion of roof from hip to gable end
28 COLUMBIA AVENUE RUISLIP · premises record
Planning Application
Refused
2023-11-23
Erection of a single storey wraparound side and rear extension following demolition of existing garage and conservatory.
28 COLUMBIA AVENUE RUISLIP · premises record
Planning Application
Approved
2023-10-02
Conversion of roof space to habitable use to include a rear dormer with juliette balcony, 1 front roof light and conversion of roof from hip to gable end. (Application for a Certificate of Lawful Development for a Proposed Development)
28 COLUMBIA AVENUE RUISLIP · premises record
Planning Application
Withdrawn
2023-10-02
Conversion of roof space to habitable use to include a rear dormer and 2 front rooflights
42 COLUMBIA AVENUE RUISLIP HA4 9SU · premises record
Agent Mr Steve Jones · Officer Jivan Manku
Planning Application
Withdrawn
2018-05-02
Single storey rear extension (Application for a Certificate of Lawful Development for a Proposed Development)
7 COLUMBIA AVENUE RUISLIP MIDDLESEX HA4 9SU · premises record
Agent Mr Kenneth Peasland · Officer Hoda Sadri
Planning Application
Refused
2018-03-29
Conversion of roof space to habitable use to include a rear dormer and 2 front rooflights (Application for a Certificate of Lawful Development for a Proposed Development)
42 COLUMBIA AVENUE RUISLIP HA4 9SU · premises record
Agent Mr Steve Jones Suite · Officer Jivan Manku
Planning Application
Refused
2018-02-02
Conversion of roofspace to habitable use to include a rear dormer and 3 front rooflights
32 COLUMBIA AVENUE RUISLIP HA4 9SU · premises record
Agent MR HITEN SHAH · Officer Liz Arnold
Planning Application
Approved
2016-03-09
TPO 327 G2 1 x Field Maple to reduce spread by removing 2m
41 COLUMBIA AVENUE RUISLIP HA4 9SU · premises record
Approved
2025-04-28
More
Tree Works (TPO)
Conversion of roof space to habitable use to include a rear dormer and 4 front roof lights.
29 COLUMBIA AVENUE RUISLIP · premises record
Agent Mr Francesco Cortese · Officer Sharon Singh
Approved
2025-02-13
More
Planning Application
Erection of a part single storey, part two storey wraparound extension, installation of solar panels, following the demolition of existing garage and conservatory
28 COLUMBIA AVENUE RUISLIP · premises record
Refused
2024-05-09
More
Planning Application
Show all 10 rows
Conversion of roof space to habitable use to include a rear dormer with juliette balcony, 1 front roof lights and conversion of roof from hip to gable end
28 COLUMBIA AVENUE RUISLIP · premises record
Refused
2023-11-23
More
Planning Application
Erection of a single storey wraparound side and rear extension following demolition of existing garage and conservatory.
28 COLUMBIA AVENUE RUISLIP · premises record
Approved
2023-10-02
More
Planning Application
Conversion of roof space to habitable use to include a rear dormer with juliette balcony, 1 front roof light and conversion of roof from hip to gable end. (Application for a Certificate of Lawful Development for a Proposed Development)
28 COLUMBIA AVENUE RUISLIP · premises record
Withdrawn
2023-10-02
More
Planning Application
Conversion of roof space to habitable use to include a rear dormer and 2 front rooflights
42 COLUMBIA AVENUE RUISLIP HA4 9SU · premises record
Agent Mr Steve Jones · Officer Jivan Manku
Withdrawn
2018-05-02
More
Planning Application
Single storey rear extension (Application for a Certificate of Lawful Development for a Proposed Development)
7 COLUMBIA AVENUE RUISLIP MIDDLESEX HA4 9SU · premises record
Agent Mr Kenneth Peasland · Officer Hoda Sadri
Refused
2018-03-29
More
Planning Application
Conversion of roof space to habitable use to include a rear dormer and 2 front rooflights (Application for a Certificate of Lawful Development for a Proposed Development)
42 COLUMBIA AVENUE RUISLIP HA4 9SU · premises record
Agent Mr Steve Jones Suite · Officer Jivan Manku
Refused
2018-02-02
More
Planning Application
Conversion of roofspace to habitable use to include a rear dormer and 3 front rooflights
32 COLUMBIA AVENUE RUISLIP HA4 9SU · premises record
Agent MR HITEN SHAH · Officer Liz Arnold
Approved
2016-03-09
More
Planning Application
Building control
Building-control records are not yet collected for Hillingdon — the register is being gathered borough by borough (held so far: Lambeth, Brent, Ealing, Westminster, City and others).
Place
What affects it?
Every mapped designation touching a premises in this postcode, with how many of its 59 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Residential extensions · reference A8177 · covers 59 of 59 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Residential extensions · reference A8177 · covers 59 of 59 premises. Some normally permitted changes may require planning permission.
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 29 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Agent on 4 applications
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 4 applications
Agent on 1 application
Agent on 1 application
Show all 10 rows
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Development
What could it become?
Planning precedent29 applications and 31 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy36 EPC records; ratings C: 19, D: 17.
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.