Postcode record · Hillingdon
HA4 9SA.
HA4 9SA has 44 known premises and 24 planning records — 17 approved of 23 decided (73.9%). 32 EPC records.
Postcode HA4 9SA · boundary not held, centred on the postcodeApprovedRefusedOther24 exact24 on the map — every match
At a glance · this postcodeHillingdon profile →
44
Premises
known addresses (UPRNs)
24
Applications
23 decided
73.9%
Approval rate
17 approved · 6 refused
32
EPC records
ratings C 5 · D 18 · E 9
24
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 9SA has 44 known premises and 24 planning records — 17 approved of 23 decided (73.9%). 32 EPC records.
Premises (18 of 44 shown)
Name
Details
UPRN 10026096928
UPRN 10095322458
UPRN 100021456714
UPRN 100021456715
UPRN 100021456718
UPRN 100021456720
UPRN 100021456722
UPRN 100021456724
UPRN 100021456726
UPRN 100021456728
UPRN 10026096928
UPRN 10095322458
UPRN 100021456714
Show all 10 rows
UPRN 100021456715
UPRN 100021456718
UPRN 100021456720
UPRN 100021456722
UPRN 100021456724
UPRN 100021456726
UPRN 100021456728
Planning
What happened?
24 planning applications across the postcode; 17 approved of 23 decided (73.9%). Latest 24 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4.00 metres, for which the maximum height would be 3.80 metres, and for which the height of the eaves would be 2.60 metres.
15 CHELSTON ROAD RUISLIP · premises record
Officer Samuel Patten
Planning Application
Approved
2026-03-03
Installation of window to front to replace garage door
17A CHELSTON ROAD RUISLIP · premises record
Planning Application
Approved
2020-07-06
Raising of existing ridge line and re-roofing
15 CHELSTON ROAD RUISLIP · premises record
Officer Liz Arnold
Planning Application
Approved
2020-05-21
Conversion of roofspace to habitable use to include a rear dormer, 2 front rooflights, conversion of garage to habitable use to include alterations to elevations and addition of hipped roof over existing flat roofed two storey side extension (Application for a Certificate of Lawful Development for a
65 CHELSTON ROAD RUISLIP · premises record
Officer Hoda Sadri
Planning Application
Approved
2018-03-22
Conversion of roof space to habitable use to include a rear dormer, and 2 front rooflights, installation of pitched roof over existing side extension and conversion of garage to habitable use to include alterations to front elevation
65 CHELSTON ROAD RUISLIP · premises record
Agent Focusmont Ltd Ashcroft High Street Ashcott TA7 · Officer Hoda Sadri
Planning Application
Refused
2017-12-11
Single storey rear extension (Application for a Certificate of Lawful Development for a Proposed Development)
21 CHELSTON ROAD RUISLIP MIDDLESEX HA4 9SA · premises record
Officer Jivan Manku
Planning Application
Approved
2017-10-27
Conversion of roof space to habitable use to include a rear dormer and 2 front roof lights (Application for a Certificate of Lawful Development for a Proposed Development)
71 CHELSTON ROAD RUISLIP HA4 9SA · premises record
Officer Hoda Sadri
Planning Application
Approved
2017-01-16
Part two storey, part single storey side/rear extension
59 CHELSTON ROAD RUISLIP · premises record
Agent Mr Aidan Cusack · Officer Ayesha Ali
Planning Application
Refused
2016-04-25
Erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4 metres, for which the maximum height would be 3.4 metres, and for which the height of the eaves would be 3 metres
59 CHELSTON ROAD RUISLIP · premises record
Officer Hoda Sadri
Planning Application
Refused
2016-04-25
Single storey rear infill extension
67 CHELSTON ROAD RUISLIP · premises record
Agent Mr H Patel · Officer Victor Unuigbe
Planning Application
Approved
2015-09-09
Erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4.00 metres, for which the maximum height would be 3.80 metres, and for which the height of the eaves would be 2.60 metres.
15 CHELSTON ROAD RUISLIP · premises record
Officer Samuel Patten
Approved
2026-03-03
More
Planning Application
Installation of window to front to replace garage door
17A CHELSTON ROAD RUISLIP · premises record
Approved
2020-07-06
More
Planning Application
Raising of existing ridge line and re-roofing
15 CHELSTON ROAD RUISLIP · premises record
Officer Liz Arnold
Approved
2020-05-21
More
Planning Application
Show all 10 rows
Conversion of roofspace to habitable use to include a rear dormer, 2 front rooflights, conversion of garage to habitable use to include alterations to elevations and addition of hipped roof over existing flat roofed two storey side extension (Application for a Certificate of Lawful Development for a
65 CHELSTON ROAD RUISLIP · premises record
Officer Hoda Sadri
Approved
2018-03-22
More
Planning Application
Conversion of roof space to habitable use to include a rear dormer, and 2 front rooflights, installation of pitched roof over existing side extension and conversion of garage to habitable use to include alterations to front elevation
65 CHELSTON ROAD RUISLIP · premises record
Agent Focusmont Ltd Ashcroft High Street Ashcott TA7 · Officer Hoda Sadri
Refused
2017-12-11
More
Planning Application
Single storey rear extension (Application for a Certificate of Lawful Development for a Proposed Development)
21 CHELSTON ROAD RUISLIP MIDDLESEX HA4 9SA · premises record
Officer Jivan Manku
Approved
2017-10-27
More
Planning Application
Conversion of roof space to habitable use to include a rear dormer and 2 front roof lights (Application for a Certificate of Lawful Development for a Proposed Development)
71 CHELSTON ROAD RUISLIP HA4 9SA · premises record
Officer Hoda Sadri
Approved
2017-01-16
More
Planning Application
Part two storey, part single storey side/rear extension
59 CHELSTON ROAD RUISLIP · premises record
Agent Mr Aidan Cusack · Officer Ayesha Ali
Refused
2016-04-25
More
Planning Application
Erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4 metres, for which the maximum height would be 3.4 metres, and for which the height of the eaves would be 3 metres
59 CHELSTON ROAD RUISLIP · premises record
Officer Hoda Sadri
Refused
2016-04-25
More
Planning Application
Single storey rear infill extension
67 CHELSTON ROAD RUISLIP · premises record
Agent Mr H Patel · Officer Victor Unuigbe
Approved
2015-09-09
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 44 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Residential extensions · reference A8177 · covers 44 of 44 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Residential extensions · reference A8177 · covers 44 of 44 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 24 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Agent on 2 applications
Agent on 1 application
Agent on 1 application
Agent on 1 application
Agent on 1 application
Case officer on 4 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Agent on 2 applications
Agent on 1 application
Agent on 1 application
Show all 10 rows
Agent on 1 application
Agent on 1 application
Case officer on 4 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Case officer on 2 applications
Development
What could it become?
Planning precedent24 applications and 24 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy32 EPC records; ratings C: 5, D: 18, 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.
6 intent signals recorded in this postcode
Repeat sale · Price decline · Long hold · Company dissolving
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.