Postcode record · Hillingdon
HA4 6HJ.
HA4 6HJ has 33 known premises and 17 planning records — 14 approved of 15 decided (93.3%). 18 EPC records.
Postcode HA4 6HJ · boundary not held, centred on the postcodeApprovedRefusedOther17 exact17 on the map — every match
At a glance · this postcodeHillingdon profile →
33
Premises
known addresses (UPRNs)
17
Applications
15 decided
93.3%
Approval rate
14 approved · 1 refused
18
EPC records
ratings C 8 · D 8 · E 2
17
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 6HJ has 33 known premises and 17 planning records — 14 approved of 15 decided (93.3%). 18 EPC records.
Premises (18 of 33 shown)
Name
Details
UPRN 100021461854
UPRN 100021461855
UPRN 100021461856
UPRN 100021461857
UPRN 100021461858
UPRN 100021461859
UPRN 100021461860
UPRN 100021461861
UPRN 100021461862
UPRN 100021461863
UPRN 100021461854
UPRN 100021461855
UPRN 100021461856
Show all 10 rows
UPRN 100021461857
UPRN 100021461858
UPRN 100021461859
UPRN 100021461860
UPRN 100021461861
UPRN 100021461862
UPRN 100021461863
Planning
What happened?
17 planning applications across the postcode; 14 approved of 15 decided (93.3%). Latest 17 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Erection of a single storey rear extension.
184 HERLWYN AVENUE RUISLIP HA4 6HJ · premises record
Agent MRS M V ENES Unit · Officer Sharon Singh
Planning Application
Other
2026-05-20
Erection of a single storey rear extension and alterations to existing garage in rear garden
186 HERLWYN AVENUE RUISLIP · premises record
Agent John Perrin · Officer Rebekah McCullough
Planning Application
Approved
2023-02-15
Conversion of roof space to habitable use to include a rear dormer, 2 front roof lights, conversion of roof from hip to gable end and removal of an existing chimney (Application for a Certificate of Lawful Development for a Proposed Development)
186 HERLWYN AVENUE RUISLIP · premises record
Agent John Perrin · Officer Katherine Mills
Planning Application
Approved
2023-02-15
Conversion of roof space to habitable use to include a rear dormer with 1 front roof light and conversion of roof from hip to gable end (Application for a Certificate of Lawful Development for a Proposed Development)
184 HERLWYN AVENUE RUISLIP HA4 6HJ · premises record
Agent Ms Marina Chan Marina Chan Design · Officer Analese Haynes
Planning Application
Approved
2022-09-13
Single storey rear extension following demolition of existing part rear extension; part demolition of side/rear garage addition including conversion into a study room and increase of roof height (use as a garden shed); part roof extension to the side; front rooflight; single storey front porch exten
184 HERLWYN AVENUE RUISLIP HA4 6HJ · premises record
Agent Ms Marina Chan Marina Chan Design · Officer Jimill Patel
Planning Application
Approved
2022-04-27
Conversion of roof space to habitable use to include a rear dormer roof extension with 2 front roof lights and conversion of roof from hip to gable end (Application for a Certificate of Lawful Development for a Proposed Development)
178 HERLWYN AVENUE RUISLIP HA4 6HJ · premises record
Agent Mr Mark Pottle Suite A · Officer Zara Raza
Planning Application
Approved
2021-09-20
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 metres, and for which the height of the eaves would be 2.6 metres
178 HERLWYN AVENUE RUISLIP HA4 6HJ · premises record
Agent Mr Mark Pottle Suite A · Officer Zara Raza
Planning Application
Approved
2021-09-02
Conversion of roof space to habitable use to include a rear dormer 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)
180 HERLWYN AVENUE RUISLIP HA4 6HJ · premises record
Agent Mr Raj Chana · Officer Mandeep Chaggar
Planning Application
Approved
2015-11-11
Installation of vehicular crossover to front
202 HERLWYN AVENUE RUISLIP HA4 6HJ · premises record
Agent Mr chris ward · Officer Liz Arnold
Planning Application
Refused
2015-10-13
Conversion of roofspace to habitable use to include a rear dormer 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)
188 HERLWYN AVENUE RUISLIP HA4 6HJ · premises record
Agent Mr Mark Pottle Suite B · Officer Naim Poptani
Planning Application
Approved
2015-08-05
Erection of a single storey rear extension.
184 HERLWYN AVENUE RUISLIP HA4 6HJ · premises record
Agent MRS M V ENES Unit · Officer Sharon Singh
Other
2026-05-20
More
Planning Application
Erection of a single storey rear extension and alterations to existing garage in rear garden
186 HERLWYN AVENUE RUISLIP · premises record
Agent John Perrin · Officer Rebekah McCullough
Approved
2023-02-15
More
Planning Application
Conversion of roof space to habitable use to include a rear dormer, 2 front roof lights, conversion of roof from hip to gable end and removal of an existing chimney (Application for a Certificate of Lawful Development for a Proposed Development)
186 HERLWYN AVENUE RUISLIP · premises record
Agent John Perrin · Officer Katherine Mills
Approved
2023-02-15
More
Planning Application
Show all 10 rows
Conversion of roof space to habitable use to include a rear dormer with 1 front roof light and conversion of roof from hip to gable end (Application for a Certificate of Lawful Development for a Proposed Development)
184 HERLWYN AVENUE RUISLIP HA4 6HJ · premises record
Agent Ms Marina Chan Marina Chan Design · Officer Analese Haynes
Approved
2022-09-13
More
Planning Application
Single storey rear extension following demolition of existing part rear extension; part demolition of side/rear garage addition including conversion into a study room and increase of roof height (use as a garden shed); part roof extension to the side; front rooflight; single storey front porch exten
184 HERLWYN AVENUE RUISLIP HA4 6HJ · premises record
Agent Ms Marina Chan Marina Chan Design · Officer Jimill Patel
Approved
2022-04-27
More
Planning Application
Conversion of roof space to habitable use to include a rear dormer roof extension with 2 front roof lights and conversion of roof from hip to gable end (Application for a Certificate of Lawful Development for a Proposed Development)
178 HERLWYN AVENUE RUISLIP HA4 6HJ · premises record
Agent Mr Mark Pottle Suite A · Officer Zara Raza
Approved
2021-09-20
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 metres, and for which the height of the eaves would be 2.6 metres
178 HERLWYN AVENUE RUISLIP HA4 6HJ · premises record
Agent Mr Mark Pottle Suite A · Officer Zara Raza
Approved
2021-09-02
More
Planning Application
Conversion of roof space to habitable use to include a rear dormer 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)
180 HERLWYN AVENUE RUISLIP HA4 6HJ · premises record
Agent Mr Raj Chana · Officer Mandeep Chaggar
Approved
2015-11-11
More
Planning Application
Installation of vehicular crossover to front
202 HERLWYN AVENUE RUISLIP HA4 6HJ · premises record
Agent Mr chris ward · Officer Liz Arnold
Refused
2015-10-13
More
Planning Application
Conversion of roofspace to habitable use to include a rear dormer 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)
188 HERLWYN AVENUE RUISLIP HA4 6HJ · premises record
Agent Mr Mark Pottle Suite B · Officer Naim Poptani
Approved
2015-08-05
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 33 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Residential extensions · reference A8177 · covers 33 of 33 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Residential extensions · reference A8177 · covers 33 of 33 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 17 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Agent on 3 applications
Agent on 2 applications
Agent on 2 applications
Agent on 2 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 3 applications
Agent on 2 applications
Agent on 2 applications
Show all 10 rows
Agent on 2 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
Development
What could it become?
Planning precedent17 applications and 17 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy18 EPC records; ratings C: 8, 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
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.