Postcode record · Hounslow
W4 1RZ.
W4 1RZ has 13 known premises and 26 planning records — 15 approved of 19 decided (78.9%). 9 EPC records.
Postcode W4 1RZ · boundary not held, centred on the postcodeApprovedRefusedOther26 exact2 approximate28 on the map — every match
At a glance · this postcodeHounslow profile →
13
Premises
known addresses (UPRNs)
26
Applications
19 decided
78.9%
Approval rate
15 approved · 4 refused
9
EPC records
ratings B 1 · C 7 · D 1
28
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?
W4 1RZ has 13 known premises and 26 planning records — 15 approved of 19 decided (78.9%). 9 EPC records.
Premises
Name
Details
UPRN 10093259176
UPRN 100021580441
UPRN 100021580442
UPRN 100021580443
UPRN 100021580444
UPRN 100021580445
UPRN 100021580446
UPRN 100021580447
UPRN 200002818996
UPRN 10093259176
UPRN 100021580441
UPRN 100021580442
Show all 10 rows
UPRN 100021580443
UPRN 100021580444
UPRN 100021580445
UPRN 100021580446
UPRN 100021580447
UPRN 200002818996
Planning
What happened?
26 planning applications across the postcode; 15 approved of 19 decided (78.9%). Latest 26 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Certificate of lawfulness for the proposed erection of a rear roof extension with one roof window to the front of the house.
50 Chiswick Common Road,Chiswick,London,W4 1RZ · premises record
Applicant Miss P Desai · Officer Daniel Hughes
Lawful Development Certificate (Proposed)
Approved
2025-04-03
Certificate of Lawfulness for the proposed erection of a rear roof extension at the property with two roof windows to the front elevation
46 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Mr Stuart Kissen · Officer zzzGemma.Bassett
Lawful Use Certificate
Not required
2012-10-25
Erection of single storey rear infill extensions to both properties
45-46 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Ms M Hui & Mr S Kissen · Officer zzzGemma.Bassett
PF-Full Applications
Approved
2012-10-17
Certificate of lawfulness for a proposed rear roof extension
45 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Miss Millie Hui · Officer zzzSam.Collins
Lawful Use Certificate
Not required
2009-09-08
Certificate of Lawfulness for the existing hip to gable and rear roof extension and installation of 2 front facing roof lights and a gable end window.
44 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Mr Oshin Mehrabi · Officer zzzSam.Collins
Lawful Use Certificate
Withdrawn
2009-08-24
Extension of pitched roof over current flat roof. Loft conversion creating large rear dormer and rear roof lights. Roof lights also installed in front and side.
44 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Mr Oshin Mehrabi · Officer zzzSam.Collins
PF-Full Applications
Refused
2009-03-24
Certificate of Lawfulness for the erection of a rear roof extension to the house.
48 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Mrs Vicki Garrat · Officer zzzSarah.Smaill
Lawful Use Certificate
Not required
2008-09-02
Erection of a part two storey, part single storey rear extension to the house.
44 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Mr Oshin Mehrabi · Officer zzzKate Raine
PF-Full Applications
Approved
2008-09-01
Erection of a rear roof extension incorporating two front roof lights.
48 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Mrs Vicki Garrat · Officer zzzSarah.Smaill
PF-Full Applications
Approved
2008-07-16
Certificate of Lawfulness for the erection of single storey rear extension, erection of rear extension on second floor and erection of roof extension incorporating roof lights to front elevation to house
49 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Lucy Kambly · Officer zzzKelly.Sweeney
Lawful Use Certificate
Not required
2005-10-20
Certificate of lawfulness for the proposed erection of a rear roof extension with one roof window to the front of the house.
50 Chiswick Common Road,Chiswick,London,W4 1RZ · premises record
Applicant Miss P Desai · Officer Daniel Hughes
Approved
2025-04-03
More
Lawful Development Certificate (Proposed)
Certificate of Lawfulness for the proposed erection of a rear roof extension at the property with two roof windows to the front elevation
46 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Mr Stuart Kissen · Officer zzzGemma.Bassett
Not required
2012-10-25
More
Lawful Use Certificate
Erection of single storey rear infill extensions to both properties
45-46 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Ms M Hui & Mr S Kissen · Officer zzzGemma.Bassett
Approved
2012-10-17
More
PF-Full Applications
Show all 10 rows
Certificate of lawfulness for a proposed rear roof extension
45 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Miss Millie Hui · Officer zzzSam.Collins
Not required
2009-09-08
More
Lawful Use Certificate
Certificate of Lawfulness for the existing hip to gable and rear roof extension and installation of 2 front facing roof lights and a gable end window.
44 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Mr Oshin Mehrabi · Officer zzzSam.Collins
Withdrawn
2009-08-24
More
Lawful Use Certificate
Extension of pitched roof over current flat roof. Loft conversion creating large rear dormer and rear roof lights. Roof lights also installed in front and side.
44 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Mr Oshin Mehrabi · Officer zzzSam.Collins
Refused
2009-03-24
More
PF-Full Applications
Certificate of Lawfulness for the erection of a rear roof extension to the house.
48 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Mrs Vicki Garrat · Officer zzzSarah.Smaill
Not required
2008-09-02
More
Lawful Use Certificate
Erection of a part two storey, part single storey rear extension to the house.
44 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Mr Oshin Mehrabi · Officer zzzKate Raine
Approved
2008-09-01
More
PF-Full Applications
Erection of a rear roof extension incorporating two front roof lights.
48 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Mrs Vicki Garrat · Officer zzzSarah.Smaill
Approved
2008-07-16
More
PF-Full Applications
Certificate of Lawfulness for the erection of single storey rear extension, erection of rear extension on second floor and erection of roof extension incorporating roof lights to front elevation to house
49 Chiswick Common Road, Chiswick, London, W4 1RZ · premises record
Applicant Lucy Kambly · Officer zzzKelly.Sweeney
Not required
2005-10-20
More
Lawful Use Certificate
Building control
Building-control records are not yet collected for Hounslow — 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 13 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Dwellinghouses (C3) to small HMOs (C4) - borough-wide Article 4 Direction · reference A4D.2 · covers 13 of 13 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Change of use or development that would result in new dwellings (Class MA/ZA) · reference A4D.3 · covers 13 of 13 premises. Some normally permitted changes may require planning permission.
Archaeological Priority Area
Summary and Definition The Archaeological Priority Area follows the projected line of the London to Silchester Roman road as it travels through the Borough of Hounslow. This is one of the major Roman roads radiating out west f · reference 220942 · covers 13 of 13 premises. Groundworks may require archaeological assessment or investigation.
Conservation Area
Chiswick High Road · reference HSLCA28 · covers 1 of 13 premises. Demolition, alterations, trees and design are subject to additional heritage controls.
Article 4 Direction Area
Dwellinghouses (C3) to small HMOs (C4) - borough-wide Article 4 Direction · reference A4D.2 · covers 13 of 13 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Change of use or development that would result in new dwellings (Class MA/ZA) · reference A4D.3 · covers 13 of 13 premises. Some normally permitted changes may require planning permission.
Archaeological Priority Area
Summary and Definition The Archaeological Priority Area follows the projected line of the London to Silchester Roman road as it travels through the Borough of Hounslow. This is one of the major Roman roads radiating out west f · reference 220942 · covers 13 of 13 premises. Groundworks may require archaeological assessment or investigation.
Show all 4 rows
Conservation Area
Chiswick High Road · reference HSLCA28 · covers 1 of 13 premises. Demolition, alterations, trees and design are subject to additional heritage controls.
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 26 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
Applicant on 3 applications
Applicant on 2 applications
Applicant on 2 applications
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Case officer on 3 applications
Applicant on 3 applications
Applicant on 2 applications
Applicant on 2 applications
Show all 10 rows
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Case officer on 3 applications
Development
What could it become?
Planning precedent26 applications and 28 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy9 EPC records; ratings B: 1, C: 7, D: 1.
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.