Postcode record · Westminster
SW1W 9HS.
SW1W 9HS has 17 known premises and 170 planning records — 127 approved of 137 decided (92.7%). 5 EPC records.
Postcode SW1W 9HS · boundary not held, centred on the postcodeApprovedRefusedOther201 on the map — every match
At a glance · this postcodeWestminster profile →
17
Premises
known addresses (UPRNs)
170
Applications
137 decided
92.7%
Approval rate
127 approved · 10 refused
63 days
Median decision time
average 81 days · 157 dated decisions
5
EPC records
ratings D 3 · E 1 · F 1
201
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?
SW1W 9HS has 17 known premises and 170 planning records — 127 approved of 137 decided (92.7%). 5 EPC records.
Premises
Name
Details
UPRN 10033547281
UPRN 10033568282
UPRN 10033600237
UPRN 100022734709
UPRN 100022734710
UPRN 100022734711
UPRN 100022734712
UPRN 100022734713
UPRN 100022734714
UPRN 100022734715
UPRN 10033547281
UPRN 10033568282
UPRN 10033600237
Show all 10 rows
UPRN 100022734709
UPRN 100022734710
UPRN 100022734711
UPRN 100022734712
UPRN 100022734713
UPRN 100022734714
UPRN 100022734715
Planning
What happened?
170 planning applications across the postcode; 127 approved of 137 decided (92.7%). Latest 30 shown.
Reference
Proposal · address
Type
Outcome
Date · distance
Details of York and Portland stone (photos against existing fabric) for the paving for the lightwells and front entrance steps pursuant to Condition 11 of planning permission dated 24 November 2023 (RN: 23/06222/FULL)
25 Chester Square London SW1W 9HS · premises record
Advertisement
Approved
2026-04-07
Details of York and Portland stone (photos against existing fabric) for the paving for the lightwells and front entrance steps pursuant to Condition 5 of listed building consent dated 24 November 2023 (RN: 23/06223/LBC)
25 Chester Square London SW1W 9HS · premises record
—
Unknown
2026-04-07
Details of new fireplaces pursuant to condition 7 of listed building consent dated 24th November 2023 (RN:23/06223/LBC)
25 Chester Square London SW1W 9HS · premises record
Officer Nikki Mitchell
Approval of Details (ADLBC)
Approved
2025-06-12
Details of new fireplaces pursuant to condition 7 of listed building dated 24 November 2023 (RN: 23/06223/LBC).
25 Chester Square London SW1W 9HS · premises record
Officer Nikki Mitchell
Approval of Details (ADLBC)
Refused
2025-04-02
Details of acoustic enclosure to rear terrace pursuant to condition 5 of listed building consent dated 29 July 2024 (RN: 24/03487/LBC).
25 Chester Square London SW1W 9HS · premises record
Officer Nikki Mitchell
Approval of Details (ADLBC)
Approved
2025-04-02
Details of acoustic enclosure to rear terrace pursuant to condition 5 of planning permission dated 29 July 2024 (RN: 24/03486/FULL).
25 Chester Square London SW1W 9HS · premises record
Officer Nikki Mitchell
Approval of Details (Full PP)
Approved
2025-04-02
Details of metal balustrading and new garage doors pursuant to Condition 6 of listed building consent dated 24 November 2023 (RN: 23/06223/LBC).
25 Chester Square London SW1W 9HS · premises record
Officer Nikki Mitchell
Approval of Details (ADLBC)
Approved
2025-03-04
Details of metal balustrading and new garage doors pursuant to Condition 12 of planning permission dated 24 November 2023 (RN: 23/06222/FULL).
25 Chester Square London SW1W 9HS · premises record
Officer Nikki Mitchell
Approval of Details (Full PP)
Approved
2025-03-04
Variation of condition 1 of planning permission dated 23 April 2024 (RN: 24/00410/FULL) (which itself varied earlier permissions) for: Reconfiguration of two residential units to form one unit within Nos. 25, 26 and 48; and new residential unit within No. 49; installation of four condenser units, two on each of the roofs of Nos. 25 and 26; and extension at rear third and fourth floor level of No. 25 and associated works (site includes 25-26 Chester Square and 49-48 Eaton Mews South). Namely, the formation of one new internal connection between Nos. 25 and 26 at first floor for improved functionality of use.
25 Chester Square London SW1W 9HS · premises record
Officer Joshua Howitt
Full Planning Permission Application
Approved
2024-09-02
Proposed works to 25 and 26 Chester Square and 48 and 49 Eaton Mews South, for the reconfiguration of the current two residential units to form one unit with 25, 26 and 48; and another unit with 49; and associated refurbishment works including formation and removal of connections between buildings to that effect, and extension of 25 upper floors to rear. (Including previously consented works covered by 24/00404/LBC; as well as additional amendments to form internal connection at First Floor, the latter highlighted).
25 Chester Square London SW1W 9HS · premises record
Officer Joshua Howitt
Listed Building Consent Application
Approved
2024-09-02
Details of York and Portland stone (photos against existing fabric) for the paving for the lightwells and front entrance steps pursuant to Condition 11 of planning permission dated 24 November 2023 (RN: 23/06222/FULL)
25 Chester Square London SW1W 9HS · premises record
Approved
2026-04-07
More
Advertisement
Details of York and Portland stone (photos against existing fabric) for the paving for the lightwells and front entrance steps pursuant to Condition 5 of listed building consent dated 24 November 2023 (RN: 23/06223/LBC)
25 Chester Square London SW1W 9HS · premises record
Unknown
2026-04-07
More
—
Details of new fireplaces pursuant to condition 7 of listed building consent dated 24th November 2023 (RN:23/06223/LBC)
25 Chester Square London SW1W 9HS · premises record
Officer Nikki Mitchell
Approved
2025-06-12
More
Approval of Details (ADLBC)
Show all 10 rows
Details of new fireplaces pursuant to condition 7 of listed building dated 24 November 2023 (RN: 23/06223/LBC).
25 Chester Square London SW1W 9HS · premises record
Officer Nikki Mitchell
Refused
2025-04-02
More
Approval of Details (ADLBC)
Details of acoustic enclosure to rear terrace pursuant to condition 5 of listed building consent dated 29 July 2024 (RN: 24/03487/LBC).
25 Chester Square London SW1W 9HS · premises record
Officer Nikki Mitchell
Approved
2025-04-02
More
Approval of Details (ADLBC)
Details of acoustic enclosure to rear terrace pursuant to condition 5 of planning permission dated 29 July 2024 (RN: 24/03486/FULL).
25 Chester Square London SW1W 9HS · premises record
Officer Nikki Mitchell
Approved
2025-04-02
More
Approval of Details (Full PP)
Details of metal balustrading and new garage doors pursuant to Condition 6 of listed building consent dated 24 November 2023 (RN: 23/06223/LBC).
25 Chester Square London SW1W 9HS · premises record
Officer Nikki Mitchell
Approved
2025-03-04
More
Approval of Details (ADLBC)
Details of metal balustrading and new garage doors pursuant to Condition 12 of planning permission dated 24 November 2023 (RN: 23/06222/FULL).
25 Chester Square London SW1W 9HS · premises record
Officer Nikki Mitchell
Approved
2025-03-04
More
Approval of Details (Full PP)
Variation of condition 1 of planning permission dated 23 April 2024 (RN: 24/00410/FULL) (which itself varied earlier permissions) for: Reconfiguration of two residential units to form one unit within Nos. 25, 26 and 48; and new residential unit within No. 49; installation of four condenser units, two on each of the roofs of Nos. 25 and 26; and extension at rear third and fourth floor level of No. 25 and associated works (site includes 25-26 Chester Square and 49-48 Eaton Mews South). Namely, the formation of one new internal connection between Nos. 25 and 26 at first floor for improved functionality of use.
25 Chester Square London SW1W 9HS · premises record
Officer Joshua Howitt
Approved
2024-09-02
More
Full Planning Permission Application
Proposed works to 25 and 26 Chester Square and 48 and 49 Eaton Mews South, for the reconfiguration of the current two residential units to form one unit with 25, 26 and 48; and another unit with 49; and associated refurbishment works including formation and removal of connections between buildings to that effect, and extension of 25 upper floors to rear. (Including previously consented works covered by 24/00404/LBC; as well as additional amendments to form internal connection at First Floor, the latter highlighted).
25 Chester Square London SW1W 9HS · premises record
Officer Joshua Howitt
Approved
2024-09-02
More
Listed Building Consent Application
Building control
Building-control records are not yet collected for Westminster — 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 17 premises each one covers.
Designation
Coverage
Archaeological Priority Area
City of Westminster APA 3.2: Pimlico Summary and Definition: The APA covers the confluence of the Thames and Tyburn rivers. For much of its history this was a low lying marshy area that was sparsely populated until the 19th century when the la · reference 76643 · covers 17 of 17 premises. Groundworks may require archaeological assessment or investigation.
Article 4 Direction Area
Article 4 Basement Development Permitted Rights Removed · reference 23/00006/REG_4 · covers 17 of 17 premises. Some normally permitted changes may require planning permission.
Conservation Area
Belgravia · reference CONARA/1350 · covers 17 of 17 premises. Demolition, alterations, trees and design are subject to additional heritage controls.
Tree Preservation Zone
W9_A1 · reference W9_A1 · covers 2 of 17 premises. Protected-tree works may require consent or formal notice.
Archaeological Priority Area
City of Westminster APA 3.2: Pimlico Summary and Definition: The APA covers the confluence of the Thames and Tyburn rivers. For much of its history this was a low lying marshy area that was sparsely populated until the 19th century when the la · reference 76643 · covers 17 of 17 premises. Groundworks may require archaeological assessment or investigation.
Article 4 Direction Area
Article 4 Basement Development Permitted Rights Removed · reference 23/00006/REG_4 · covers 17 of 17 premises. Some normally permitted changes may require planning permission.
Conservation Area
Belgravia · reference CONARA/1350 · covers 17 of 17 premises. Demolition, alterations, trees and design are subject to additional heritage controls.
Show all 4 rows
Tree Preservation Zone
W9_A1 · reference W9_A1 · covers 2 of 17 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
Case officer on 12 applications
Case officer on 11 applications
Case officer on 3 applications
Case officer on 1 application
Case officer on 12 applications
Case officer on 11 applications
Case officer on 3 applications
Show all 4 rows
Case officer on 1 application
Development
What could it become?
Planning precedent170 applications and 201 mapped decisions in this postcode — precedent for what has been permitted and refused here.
Energy5 EPC records; ratings D: 3, E: 1, F: 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
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.