Postcode record · Kensington And Chelsea
SW3 4XH.
SW3 4XH has 23 known premises and 40 planning records — 33 approved of 38 decided (86.8%). 11 EPC records.
Postcode SW3 4XH · boundary not held, centred on the postcodeApprovedRefusedOther40 exact40 on the map — every match
At a glance · this postcodeKensington And Chelsea profile →
23
Premises
known addresses (UPRNs)
40
Applications
38 decided
86.8%
Approval rate
33 approved · 5 refused
11
EPC records
ratings D 7 · E 4
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?
SW3 4XH has 23 known premises and 40 planning records — 33 approved of 38 decided (86.8%). 11 EPC records.
Premises (18 of 23 shown)
Name
Details
UPRN 217008329
UPRN 217008330
UPRN 217008331
UPRN 217008332
UPRN 217008333
UPRN 217008334
UPRN 217008335
UPRN 217008336
UPRN 217008337
UPRN 217008338
UPRN 217008329
UPRN 217008330
UPRN 217008331
Show all 10 rows
UPRN 217008332
UPRN 217008333
UPRN 217008334
UPRN 217008335
UPRN 217008336
UPRN 217008337
UPRN 217008338
Planning
What happened?
40 planning applications across the postcode; 33 approved of 38 decided (86.8%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Extension and alteration including new subterranean level.
31 Bywater Street, London, SW3 4XH · premises record
Applicant Khan · Officer Ben Brockey
Planning Permission
Approved
2025-05-30
Details required by Condition 9 (Sustainable Drainage Systems Strategy) of planning permission PP/21/07141 (Erection of mansard roof addition with terrace to the front elevation, full height rear closet wing extension, ground floor extension to lightwell and associated external alterations)
23 Bywater Street, London, SW3 4XH · premises record
Applicant Chou · Officer Neville Palmer
Discharge of Conditions
Approved
2024-09-12
Installation of wheelchair lift into the front exterior light-well of the property to provide access from ground floor to lower ground floor level
29 Bywater Street, London, SW3 4XH · premises record
Applicant L Curtis · Officer John White
Planning Permission
Approved
2023-03-01
Formation of a roof terrace, including installation of sliding door; erection of metal railings on rear roof of second floor level
25 Bywater Street, London, SW3 4XH · premises record
Applicant Not disclosed · Officer David Batchelor
Planning Permission
Approved
2023-02-08
Enlargement of opening at rear ground floor with a juliette balcony; replacement rear windows like for like; Installation of metal stairs to front lower ground floor like for like; installation of rooflights on top floor.
35 Bywater Street, London, SW3 4XH · premises record
Officer David Batchelor
Planning Permission
Approved
2023-01-12
Details required by condition 10 (Contamination - Quantitative risk assessment and remediation strategy) of planning permission 20/05318 (Excavation of single storey basement and erection of extension to lower ground floor level with associated external alterations)
23 Bywater Street, London, SW3 4XH · premises record
Officer Alison Long
Discharge of Conditions
Approved
2021-12-09
Erection of mansard roof addition with terrace to the front elevation, full height rear closet wing extension, ground floor extension to lightwell and associated external alterations
23 Bywater Street, London, SW3 4XH · premises record
Officer Alison Long
Planning Permission
Approved
2021-11-05
Details required by Conditions 9 (Contamination - preliminary risk assessment report and proposed site investigation), 10 (Contamination - quantitative risk assessment and remediation strategy) of planning permission PP/20/05318 (excavation of single storey basement and erection of extension to lower ground floor level with associated external alterations)
23 Bywater Street, London, SW3 4XH · premises record
Applicant Chou · Officer Alison Long
Discharge of Conditions
Split
2021-09-30
Details required by Condition 3 (Construction Traffic Management Plan) of planning permission PP/20/05318 (Excavation of single storey basement and erection of extension to lower ground floor level with associated external alterations)
23 Bywater Street, London, SW3 4XH · premises record
Officer Alison Long
Discharge of Conditions
Approved
2021-09-22
Details required by Conditions 9 (Contamination - preliminary risk assessment report and proposed site investigation, 10 (Contamination - Quantitative risk assessment and remediation strategy), 11 (Contamination - Verification report ) and 12 (Contamination - Unexpected) of planning permission PP/20/05318 (Excavation of single storey basement and erection of extension to lower ground floor level with associated external alterations)
23 Bywater Street, London, SW3 4XH · premises record
Officer Alison Long
Discharge of Conditions
Refused
2021-03-29
Extension and alteration including new subterranean level.
31 Bywater Street, London, SW3 4XH · premises record
Applicant Khan · Officer Ben Brockey
Approved
2025-05-30
More
Planning Permission
Details required by Condition 9 (Sustainable Drainage Systems Strategy) of planning permission PP/21/07141 (Erection of mansard roof addition with terrace to the front elevation, full height rear closet wing extension, ground floor extension to lightwell and associated external alterations)
23 Bywater Street, London, SW3 4XH · premises record
Applicant Chou · Officer Neville Palmer
Approved
2024-09-12
More
Discharge of Conditions
Installation of wheelchair lift into the front exterior light-well of the property to provide access from ground floor to lower ground floor level
29 Bywater Street, London, SW3 4XH · premises record
Applicant L Curtis · Officer John White
Approved
2023-03-01
More
Planning Permission
Show all 10 rows
Formation of a roof terrace, including installation of sliding door; erection of metal railings on rear roof of second floor level
25 Bywater Street, London, SW3 4XH · premises record
Applicant Not disclosed · Officer David Batchelor
Approved
2023-02-08
More
Planning Permission
Enlargement of opening at rear ground floor with a juliette balcony; replacement rear windows like for like; Installation of metal stairs to front lower ground floor like for like; installation of rooflights on top floor.
35 Bywater Street, London, SW3 4XH · premises record
Officer David Batchelor
Approved
2023-01-12
More
Planning Permission
Details required by condition 10 (Contamination - Quantitative risk assessment and remediation strategy) of planning permission 20/05318 (Excavation of single storey basement and erection of extension to lower ground floor level with associated external alterations)
23 Bywater Street, London, SW3 4XH · premises record
Officer Alison Long
Approved
2021-12-09
More
Discharge of Conditions
Erection of mansard roof addition with terrace to the front elevation, full height rear closet wing extension, ground floor extension to lightwell and associated external alterations
23 Bywater Street, London, SW3 4XH · premises record
Officer Alison Long
Approved
2021-11-05
More
Planning Permission
Details required by Conditions 9 (Contamination - preliminary risk assessment report and proposed site investigation), 10 (Contamination - quantitative risk assessment and remediation strategy) of planning permission PP/20/05318 (excavation of single storey basement and erection of extension to lower ground floor level with associated external alterations)
23 Bywater Street, London, SW3 4XH · premises record
Applicant Chou · Officer Alison Long
Split
2021-09-30
More
Discharge of Conditions
Details required by Condition 3 (Construction Traffic Management Plan) of planning permission PP/20/05318 (Excavation of single storey basement and erection of extension to lower ground floor level with associated external alterations)
23 Bywater Street, London, SW3 4XH · premises record
Officer Alison Long
Approved
2021-09-22
More
Discharge of Conditions
Details required by Conditions 9 (Contamination - preliminary risk assessment report and proposed site investigation, 10 (Contamination - Quantitative risk assessment and remediation strategy), 11 (Contamination - Verification report ) and 12 (Contamination - Unexpected) of planning permission PP/20/05318 (Excavation of single storey basement and erection of extension to lower ground floor level with associated external alterations)
23 Bywater Street, London, SW3 4XH · premises record
Officer Alison Long
Refused
2021-03-29
More
Discharge of Conditions
Building control
Building-control records are not yet collected for Kensington And Chelsea — 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 23 premises each one covers.
Designation
Coverage
Article 4 Direction Area
Article 4 - No 100 · reference 79 · covers 23 of 23 premises. Some normally permitted changes may require planning permission.
Conservation Area
Chelsea · reference 27 · covers 23 of 23 premises. Demolition, alterations, trees and design are subject to additional heritage controls.
Tree Preservation Zone
Named designation not supplied · reference 27 · covers 23 of 23 premises. Protected-tree works may require consent or formal notice.
Article 4 Direction Area
Article 4 - No 100 · reference 79 · covers 23 of 23 premises. Some normally permitted changes may require planning permission.
Conservation Area
Chelsea · reference 27 · covers 23 of 23 premises. Demolition, alterations, trees and design are subject to additional heritage controls.
Tree Preservation Zone
Named designation not supplied · reference 27 · covers 23 of 23 premises. Protected-tree works may require consent or formal notice.
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 3 applications
Applicant on 1 application
Applicant on 1 application
Applicant on 1 application
Case officer on 6 applications
Case officer on 2 applications
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Applicant on 3 applications
Applicant on 1 application
Applicant on 1 application
Show all 10 rows
Applicant on 1 application
Case officer on 6 applications
Case officer on 2 applications
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Case officer on 1 application
Development
What could it become?
Planning precedent40 applications and 40 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy11 EPC records; ratings D: 7, E: 4.
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.