Postcode record · Hounslow
W4 1PW.
W4 1PW has 26 known premises and 36 planning records — 16 approved of 21 decided (76.2%). 13 EPC records.
Postcode W4 1PW · boundary not held, centred on the postcodeApprovedRefusedOther36 exact4 approximate40 on the map — every match
At a glance · this postcodeHounslow profile →
26
Premises
known addresses (UPRNs)
36
Applications
21 decided
76.2%
Approval rate
16 approved · 5 refused
13
EPC records
ratings C 1 · D 7 · E 5
40
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 1PW has 26 known premises and 36 planning records — 16 approved of 21 decided (76.2%). 13 EPC records.
Premises (18 of 26 shown)
Name
Details
UPRN 100021587084
UPRN 200002818885
UPRN 200002818886
UPRN 200002818887
UPRN 200002818888
UPRN 200002818889
UPRN 200002818890
UPRN 200002818891
UPRN 200002818892
UPRN 200002818893
UPRN 100021587084
UPRN 200002818885
UPRN 200002818886
Show all 10 rows
UPRN 200002818887
UPRN 200002818888
UPRN 200002818889
UPRN 200002818890
UPRN 200002818891
UPRN 200002818892
UPRN 200002818893
Planning
What happened?
36 planning applications across the postcode; 16 approved of 21 decided (76.2%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Erection of a single storey rear extension and installation of a ground floor side door to the house.
2 Mayfield Avenue,Chiswick,London,Hounslow,W4 1PW · premises record
Applicant Mr Adam Smith-Roberts · Officer Daniel Hughes
Householder Applications
Approved
2025-10-29
Certificate of lawfulness for the proposed erection of a rear roof extension and an outrigger to the house.
12 Mayfield Avenue, Chiswick, London, W4 1PW · premises record
Officer Joedee McKenzie
Lawful Development Certificate (Proposed)
Approved
2025-02-07
Certificate of lawfulness for the proposed erection of a rear roof extension with front and rear roof windows to the house.
10 Mayfield Avenue, Chiswick, London, W4 1PW · premises record
Applicant Mr and Mrs Leary and Kirkby Leary · Officer Joedee McKenzie
Lawful Development Certificate (Proposed)
Approved
2025-01-13
Certificate of Lawfulness for the proposed erection of a second floor rear outrigger extension and rear roof dormer extension and installation of one front and one rear roof light to the house.
12 Mayfield Avenue, Chiswick, London, W4 1PW · premises record
Applicant Ms Parul Patel · Officer Daniel Hughes
Lawful Development Certificate (Proposed)
Approved
2024-12-19
Erection of a single storey rear extension.
12 Mayfield Avenue, Chiswick, London, W4 1PW · premises record
Applicant Ms Parul Patel · Officer Joedee McKenzie
Householder Applications
Approved
2024-11-09
Extended rear dormer with a roof window to rear roof slope, replacement window to sash window to rear, replacement dormer window to sash and a rooflight to front roof slope and new windows to ground floor side elevations including internal alterations.
10 Mayfield Avenue, Chiswick, London, W4 1PW · premises record
Applicant Mr E and Mrs E Leary and Kirkby Leary · Officer Joedee McKenzie
Householder Applications
Refused
2024-10-06
Certificate of Lawfulness for the proposed erection of a rear roof dormer and second floor rear outrigger extension and installation of replacement glazed bifiolding rear doors to the house's two storey rear outrigger and existing single storey rear infill extension.
18 Mayfield Avenue,Chiswick,London,Hounslow,W4 1PW · premises record
Officer Daniel Hughes
Lawful Development Certificate (Proposed)
Approved
2024-05-09
T1 Apple Mature old orchard Apple has bracket fungus ???Inonotus hispidus??? in its upper crown. This fungus can be responsible for decay and eventual branch failure. Reduce all aspects of crown back to previous points. Remove internal growth and deadwood. Re-inspect within 12-18 months of pruning.
2 MAYFIELD AVENUE, CHISWICK, LONDON, W4 1PW · premises record
Officer Technical Support Officer
Works to Trees in Conservation Area
No determination
2023-09-27
T1 Silver Birch Crown Reduction Reducing the height and spread of the tree by up to 3 metres. T2 Ash Cut back to boundary.
6 MAYFIELD AVENUE, CHISWICK, LONDON, W4 1PW · premises record
Officer Technical Support Officer
Works to Trees in Conservation Area
No determination
2023-09-27
Erection of single storey side and rear ground floor extension to the house
20 MAYFIELD AVENUE, CHISWICK, LONDON, W4 1PW · premises record
Officer zzzShane.Baker
Householder Applications
Approved
2021-11-18
Erection of a single storey rear extension and installation of a ground floor side door to the house.
2 Mayfield Avenue,Chiswick,London,Hounslow,W4 1PW · premises record
Applicant Mr Adam Smith-Roberts · Officer Daniel Hughes
Approved
2025-10-29
More
Householder Applications
Certificate of lawfulness for the proposed erection of a rear roof extension and an outrigger to the house.
12 Mayfield Avenue, Chiswick, London, W4 1PW · premises record
Officer Joedee McKenzie
Approved
2025-02-07
More
Lawful Development Certificate (Proposed)
Certificate of lawfulness for the proposed erection of a rear roof extension with front and rear roof windows to the house.
10 Mayfield Avenue, Chiswick, London, W4 1PW · premises record
Applicant Mr and Mrs Leary and Kirkby Leary · Officer Joedee McKenzie
Approved
2025-01-13
More
Lawful Development Certificate (Proposed)
Show all 10 rows
Certificate of Lawfulness for the proposed erection of a second floor rear outrigger extension and rear roof dormer extension and installation of one front and one rear roof light to the house.
12 Mayfield Avenue, Chiswick, London, W4 1PW · premises record
Applicant Ms Parul Patel · Officer Daniel Hughes
Approved
2024-12-19
More
Lawful Development Certificate (Proposed)
Erection of a single storey rear extension.
12 Mayfield Avenue, Chiswick, London, W4 1PW · premises record
Applicant Ms Parul Patel · Officer Joedee McKenzie
Approved
2024-11-09
More
Householder Applications
Extended rear dormer with a roof window to rear roof slope, replacement window to sash window to rear, replacement dormer window to sash and a rooflight to front roof slope and new windows to ground floor side elevations including internal alterations.
10 Mayfield Avenue, Chiswick, London, W4 1PW · premises record
Applicant Mr E and Mrs E Leary and Kirkby Leary · Officer Joedee McKenzie
Refused
2024-10-06
More
Householder Applications
Certificate of Lawfulness for the proposed erection of a rear roof dormer and second floor rear outrigger extension and installation of replacement glazed bifiolding rear doors to the house's two storey rear outrigger and existing single storey rear infill extension.
18 Mayfield Avenue,Chiswick,London,Hounslow,W4 1PW · premises record
Officer Daniel Hughes
Approved
2024-05-09
More
Lawful Development Certificate (Proposed)
T1 Apple Mature old orchard Apple has bracket fungus ???Inonotus hispidus??? in its upper crown. This fungus can be responsible for decay and eventual branch failure. Reduce all aspects of crown back to previous points. Remove internal growth and deadwood. Re-inspect within 12-18 months of pruning.
2 MAYFIELD AVENUE, CHISWICK, LONDON, W4 1PW · premises record
Officer Technical Support Officer
No determination
2023-09-27
More
Works to Trees in Conservation Area
T1 Silver Birch Crown Reduction Reducing the height and spread of the tree by up to 3 metres. T2 Ash Cut back to boundary.
6 MAYFIELD AVENUE, CHISWICK, LONDON, W4 1PW · premises record
Officer Technical Support Officer
No determination
2023-09-27
More
Works to Trees in Conservation Area
Erection of single storey side and rear ground floor extension to the house
20 MAYFIELD AVENUE, CHISWICK, LONDON, W4 1PW · premises record
Officer zzzShane.Baker
Approved
2021-11-18
More
Householder Applications
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 26 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 26 of 26 premises. Some normally permitted changes may require planning permission.
Article 4 Direction Area
Dwellinghouses (C3) to small HMOs (C4) - borough-wide Article 4 Direction · reference A4D.2 · covers 26 of 26 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 30 applications in this postcode — the party who applied, not the owner or occupier.
Name
Details
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 4 applications
Case officer on 4 applications
Case officer on 3 applications
Applicant on 2 applications
Applicant on 1 application
Applicant on 1 application
Show all 10 rows
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Case officer on 4 applications
Case officer on 4 applications
Case officer on 3 applications
Development
What could it become?
Planning precedent36 applications and 40 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy13 EPC records; ratings C: 1, D: 7, E: 5.
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.