Postcode record · Hounslow
W4 1SF.
W4 1SF has 51 known premises and 43 planning records — 23 approved of 33 decided (69.7%). 26 EPC records.
Postcode W4 1SF · boundary not held, centred on the postcodeApprovedRefusedOther43 exact5 approximate48 on the map — every match
At a glance · this postcodeHounslow profile →
51
Premises
known addresses (UPRNs)
43
Applications
33 decided
69.7%
Approval rate
23 approved · 10 refused
26
EPC records
ratings C 11 · D 10 · E 5
48
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 1SF has 51 known premises and 43 planning records — 23 approved of 33 decided (69.7%). 26 EPC records.
Premises (18 of 51 shown)
Name
Details
UPRN 10015306977
UPRN 10091147676
UPRN 100021583943
UPRN 100021583947
UPRN 100021583951
UPRN 100021583955
UPRN 100021583956
UPRN 100021583958
UPRN 100021583962
UPRN 100021583963
UPRN 10015306977
UPRN 10091147676
UPRN 100021583943
Show all 10 rows
UPRN 100021583947
UPRN 100021583951
UPRN 100021583955
UPRN 100021583956
UPRN 100021583958
UPRN 100021583962
UPRN 100021583963
Planning
What happened?
43 planning applications across the postcode; 23 approved of 33 decided (69.7%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Non material amendment to allow an increase in size of the window on the side elevation from 700mm to 900mm of planning permission P/2024/3079 for the loft conversion with a rear dormer
36 Ennismore Avenue, Chiswick, London, W4 1SF · premises record
Officer Louise Oppe
Non-Material Minor Amendment to an existing Planning Application
Approved
2025-07-15
Certificate of Lawfulness for the proposed erection of a rear roof dormer extension to the house following the removal of its existing rear chimney stack.
14 Ennismore Avenue,Chiswick,London,W4 1SF · premises record
Officer Daniel Hughes
Lawful Development Certificate (Proposed)
Approved
2025-02-25
Erection of a single storey rear and side infill wraparound extension, changes to the roof terrace with 1.8 metre plant screening, replacement windows and doors and the removal of the side chimney, installation of new doors and windows to the front, side and rear elevations, with the erection of retrofitted exterior wall insulation only to the side and rear of the house.
14 Ennismore Avenue, Chiswick, London, W4 1SF · premises record
Officer Louise Oppe
Householder Applications
Approved
2025-02-25
Loft conversion with a rear dormer.
36 Ennismore Avenue, Chiswick, London, W4 1SF · premises record
Officer Joedee McKenzie
Householder Applications
Approved
2024-09-16
Replacement of the house's existing first floor side windows.
2 ENNISMORE AVENUE, CHISWICK, LONDON, W4 1SF · premises record
Applicant Mrs Mariia Kolodiazhna · Officer Daniel Hughes
Householder Applications
Approved
2023-11-07
Erection of a replacement single storey rear extension to the house following demolition of the existing single storey rear outrigger.
FLAT 1, 30 ENNISMORE AVENUE, CHISWICK, W4 1SF · premises record
Applicant Mr & Mrs Chris and Kelsey Medeiros Fordyce · Officer Daniel Hughes
PF-Full Applications
Approved
2023-07-05
5 day tree notification to fell tree.
44 ENNISMORE AVENUE, CHISWICK, LONDON, W4 1SF · premises record
Officer Area Manager
5 Day tree notification
No determination
2023-06-20
Erection of a single storey rear extension
38 ENNISMORE AVENUE, CHISWICK, LONDON, W4 1SF · premises record
Officer Leo Hall
Householder Applications
Approved
2021-02-15
Erection of part single part three storey rear extension and rear roof terrace
38 ENNISMORE AVENUE, CHISWICK, LONDON, W4 1SF · premises record
Officer Leo Hall
Householder Applications
Refused
2020-12-14
Erection of a rear roof extension with three front roof windows to the flat
22C ENNISMORE AVENUE, CHISWICK, LONDON, W4 1SF · premises record
Officer zzzJoyce Lo
PF-Full Applications
Approved
2020-08-04
Non material amendment to allow an increase in size of the window on the side elevation from 700mm to 900mm of planning permission P/2024/3079 for the loft conversion with a rear dormer
36 Ennismore Avenue, Chiswick, London, W4 1SF · premises record
Officer Louise Oppe
Approved
2025-07-15
More
Non-Material Minor Amendment to an existing Planning Application
Certificate of Lawfulness for the proposed erection of a rear roof dormer extension to the house following the removal of its existing rear chimney stack.
14 Ennismore Avenue,Chiswick,London,W4 1SF · premises record
Officer Daniel Hughes
Approved
2025-02-25
More
Lawful Development Certificate (Proposed)
Erection of a single storey rear and side infill wraparound extension, changes to the roof terrace with 1.8 metre plant screening, replacement windows and doors and the removal of the side chimney, installation of new doors and windows to the front, side and rear elevations, with the erection of retrofitted exterior wall insulation only to the side and rear of the house.
14 Ennismore Avenue, Chiswick, London, W4 1SF · premises record
Officer Louise Oppe
Approved
2025-02-25
More
Householder Applications
Show all 10 rows
Loft conversion with a rear dormer.
36 Ennismore Avenue, Chiswick, London, W4 1SF · premises record
Officer Joedee McKenzie
Approved
2024-09-16
More
Householder Applications
Replacement of the house's existing first floor side windows.
2 ENNISMORE AVENUE, CHISWICK, LONDON, W4 1SF · premises record
Applicant Mrs Mariia Kolodiazhna · Officer Daniel Hughes
Approved
2023-11-07
More
Householder Applications
Erection of a replacement single storey rear extension to the house following demolition of the existing single storey rear outrigger.
FLAT 1, 30 ENNISMORE AVENUE, CHISWICK, W4 1SF · premises record
Applicant Mr & Mrs Chris and Kelsey Medeiros Fordyce · Officer Daniel Hughes
Approved
2023-07-05
More
PF-Full Applications
5 day tree notification to fell tree.
44 ENNISMORE AVENUE, CHISWICK, LONDON, W4 1SF · premises record
Officer Area Manager
No determination
2023-06-20
More
5 Day tree notification
Erection of a single storey rear extension
38 ENNISMORE AVENUE, CHISWICK, LONDON, W4 1SF · premises record
Officer Leo Hall
Approved
2021-02-15
More
Householder Applications
Erection of part single part three storey rear extension and rear roof terrace
38 ENNISMORE AVENUE, CHISWICK, LONDON, W4 1SF · premises record
Officer Leo Hall
Refused
2020-12-14
More
Householder Applications
Erection of a rear roof extension with three front roof windows to the flat
22C ENNISMORE AVENUE, CHISWICK, LONDON, W4 1SF · premises record
Officer zzzJoyce Lo
Approved
2020-08-04
More
PF-Full 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 51 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 51 of 51 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 51 of 51 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 1 application
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Case officer on 4 applications
Case officer on 3 applications
Case officer on 3 applications
Case officer on 3 applications
Case officer on 3 applications
Case officer on 2 applications
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Show all 10 rows
Applicant on 1 application
Case officer on 4 applications
Case officer on 3 applications
Case officer on 3 applications
Case officer on 3 applications
Case officer on 3 applications
Case officer on 2 applications
Development
What could it become?
Planning precedent43 applications and 48 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy26 EPC records; ratings C: 11, D: 10, 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.
3 intent signals recorded in this postcode
Portfolio seller · Lapsed consent · Long hold
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.