Postcode record · Hillingdon
HA4 9RG.
HA4 9RG has 18 known premises and 21 planning records — 18 approved of 20 decided (90%). 11 EPC records.
Postcode HA4 9RG · boundary not held, centred on the postcodeApprovedRefusedOther21 exact21 on the map — every match
At a glance · this postcodeHillingdon profile →
18
Premises
known addresses (UPRNs)
21
Applications
20 decided
90%
Approval rate
18 approved · 2 refused
11
EPC records
ratings C 1 · D 8 · E 2
21
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 9RG has 18 known premises and 21 planning records — 18 approved of 20 decided (90%). 11 EPC records.
Premises
Name
Details
UPRN 100021472183
UPRN 100021472185
UPRN 100021472187
UPRN 100021472189
UPRN 100021472191
UPRN 100021472193
UPRN 100021472195
UPRN 100021472197
UPRN 100021472199
UPRN 100021472201
UPRN 100021472183
UPRN 100021472185
UPRN 100021472187
Show all 10 rows
UPRN 100021472189
UPRN 100021472191
UPRN 100021472193
UPRN 100021472195
UPRN 100021472197
UPRN 100021472199
UPRN 100021472201
Planning
What happened?
21 planning applications across the postcode; 18 approved of 20 decided (90%). Latest 21 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Variation of Condition 2 (Approved Plans) of Planning Permission ref. 53242/APP/2025/1517, dated 15-08-25 (Erection of a side and rear single storey extension, minor internal works and raised patio) with internal amendments and addition to the width of the approved side extension.
35 WINDERMERE AVENUE RUISLIP · premises record
Agent Mr Jag Guru Studio · Officer Katherine Mills
Planning Application
Approved
2025-12-03
Erection of a side and rear single storey extension, minor internal works and raised patio.
35 WINDERMERE AVENUE RUISLIP · premises record
Officer Katherine Mills
Planning Application
Approved
2025-05-30
Erection of a single storey extension to the rear, conversion of integral garage to habitable accommodation
25 WINDERMERE AVENUE RUISLIP · premises record
Agent Mr Sunny Bahia · Officer Sharon Singh
Planning Application
Approved
2024-12-09
Erection of single storey rear extension (Application for a Certificate of Lawful Development for a Proposed Development)
21 WINDERMERE AVENUE RUISLIP MIDDLESEX HA4 9RG · premises record
Officer Samuel Patten
Planning Application
Approved
2024-09-03
Erection of a single storey extension to the side
35 WINDERMERE AVENUE RUISLIP · premises record
Officer Niamh McMenamin
Planning Application
Approved
2023-04-25
Erection of a single storey extension to the side
35 WINDERMERE AVENUE RUISLIP · premises record
Officer Niamh McMenamin
Planning Application
Refused
2022-10-07
Erection of single storey extension to the side and rear
17 WINDERMERE AVENUE RUISLIP MIDDLESEX HA4 9RG · premises record
Planning Application
Approved
2022-08-01
Conversion of roof space to habitable use to include a rear dormer, 1 front roof light, conversion of roof from hip to gable end, erection of front porch and demolition of chimney stack (Application for a Certificate of Lawful Development for a Proposed Development)
17 WINDERMERE AVENUE RUISLIP MIDDLESEX HA4 9RG · premises record
Planning Application
Approved
2022-08-01
Single storey side extension
21 WINDERMERE AVENUE RUISLIP MIDDLESEX HA4 9RG · premises record
Officer Diane Verona
Planning Application
Approved
2020-12-14
Conversion of roofspace to habitable use to include a rear dormer, 2 front rooflights and conversion of roof from hip to gable end with a new gable end window (Application for a Certificate of Lawful Development for a Proposed Development)
5 WINDERMERE AVENUE RUISLIP · premises record
Officer Charlotte Spencer
Planning Application
Approved
2019-01-21
Variation of Condition 2 (Approved Plans) of Planning Permission ref. 53242/APP/2025/1517, dated 15-08-25 (Erection of a side and rear single storey extension, minor internal works and raised patio) with internal amendments and addition to the width of the approved side extension.
35 WINDERMERE AVENUE RUISLIP · premises record
Agent Mr Jag Guru Studio · Officer Katherine Mills
Approved
2025-12-03
More
Planning Application
Erection of a side and rear single storey extension, minor internal works and raised patio.
35 WINDERMERE AVENUE RUISLIP · premises record
Officer Katherine Mills
Approved
2025-05-30
More
Planning Application
Erection of a single storey extension to the rear, conversion of integral garage to habitable accommodation
25 WINDERMERE AVENUE RUISLIP · premises record
Agent Mr Sunny Bahia · Officer Sharon Singh
Approved
2024-12-09
More
Planning Application
Show all 10 rows
Erection of single storey rear extension (Application for a Certificate of Lawful Development for a Proposed Development)
21 WINDERMERE AVENUE RUISLIP MIDDLESEX HA4 9RG · premises record
Officer Samuel Patten
Approved
2024-09-03
More
Planning Application
Erection of a single storey extension to the side
35 WINDERMERE AVENUE RUISLIP · premises record
Officer Niamh McMenamin
Approved
2023-04-25
More
Planning Application
Erection of a single storey extension to the side
35 WINDERMERE AVENUE RUISLIP · premises record
Officer Niamh McMenamin
Refused
2022-10-07
More
Planning Application
Erection of single storey extension to the side and rear
17 WINDERMERE AVENUE RUISLIP MIDDLESEX HA4 9RG · premises record
Approved
2022-08-01
More
Planning Application
Conversion of roof space to habitable use to include a rear dormer, 1 front roof light, conversion of roof from hip to gable end, erection of front porch and demolition of chimney stack (Application for a Certificate of Lawful Development for a Proposed Development)
17 WINDERMERE AVENUE RUISLIP MIDDLESEX HA4 9RG · premises record
Approved
2022-08-01
More
Planning Application
Single storey side extension
21 WINDERMERE AVENUE RUISLIP MIDDLESEX HA4 9RG · premises record
Officer Diane Verona
Approved
2020-12-14
More
Planning Application
Conversion of roofspace to habitable use to include a rear dormer, 2 front rooflights and conversion of roof from hip to gable end with a new gable end window (Application for a Certificate of Lawful Development for a Proposed Development)
5 WINDERMERE AVENUE RUISLIP · premises record
Officer Charlotte Spencer
Approved
2019-01-21
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 18 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Residential extensions · reference A8177 · covers 18 of 18 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Residential extensions · reference A8177 · covers 18 of 18 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 21 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
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
Agent on 2 applications
Agent on 1 application
Agent on 1 application
Show all 10 rows
Agent on 1 application
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
Development
What could it become?
Planning precedent21 applications and 21 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy11 EPC records; ratings C: 1, D: 8, E: 2.
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.
Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.