5 - 6 William Street London SW1X 9HL Data via plota.co.uk
Proposal
Installation of seven new French doors with fanlights at front elevation facing William Street; three pairs of sash windows into existing timber box frames; one new single door, including a sidelight and fanlight at rear elevation; and other associated works to first floor. Data via plota.co.uk
Application progress
Approved on 9 Mar 2026 · Delegated Decision · Last checked 19 Oct 2026
Documents 18
Decision & officer reports 2
Statements & assessments 4
Plans & drawings 7
Consultation & comments 1
Site constraints 10
Show the other 11 with distances
- 9 m4, William Street W1Grade II
- 14 m55-91, KnightsbridgeGrade II
- 59 m1, Albert Gate Sw1Grade II
- 64 m2, Albert Gate Sw1Grade II
- 74 mWilton ArmsGrade II
- 82 mGates and Gatepiers to Albert GateGrade II
- 84 m1-8, Wilton Place Sw1Grade II
- 87 m62 and 64, Knightsbridge Sw1Grade II
- 100 m9-12 and 14-28, Wilton Place Sw1Grade II
- 122 m11 and 12, Lowndes Square Sw1Grade II
- 144 mMemorial Horse Trough Opposite Albert Gate EntranceGrade II
Checked on 1 November 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
Building
From the energy performance certificate lodged in August 2018, the latest held for this property. The building may have changed since. View the certificate
Every application in Westminster - and every UK council - as a live feed, an API, or a bulk CSV export.
Other new applications on this street
Nearby new applications
30-33 Sloane Street, London, SW1X and 2-4 Hans Crescent, London, SW1X
Verification Order required to confirm the numbering and description of the rede...
64 Sloane Street, London, SW1X 9SH
Retrospective listed building consent to Internal alterations to all floors, inc...
204-206 Sloane Street, London, SW1X 9QX
Installation of removable/ demountable security bollards to pavement frontage of...
17 Beauchamp Place, London, SW3 1NQ
Retention of revised first-floor rear extension, including reduced parapet and s...
2 and 2A Hans Street, London, SW1X 0NJ
Verification Order required to confirm the numbering and description of the resi...
Harrods, 87-135 Brompton Road, London, SW1X 7XL
Fifth floor area to accommodate relocated Pharmacy retail space with facilities ...
Important details
- Council
- Westminster
- Application type
- Listed Building Consent Application
- Postcode
- SW1X 9HL
- Received
- 30 Jun 2025
- Validated
- 3 Jul 2025
- Ward
- Knightsbridge & Belgravia
- Case officer
- Show
- Target decision
- 11 Mar 2026
- Decision
- Application Permitted
- Decision date
- 9 Mar 2026
- Decision level
- Delegated Decision
- Applicant
- Show
- Agent
- Chris Jewiss Illustration
- Leaseholder
- Show
How this decision compares
Decided in 249 days from validation, 192 days slower than Westminster's median of 57 for listed building works. Approved, as 90% of listed building works here are.
Plota live figures for listed building works decided by Westminster in the last twelve months, from validation. Westminster decision record →
Public comments
No public comments yet.
Last counted 19 Oct 2026
Consultation & key dates
- Comments by
- 13 Aug 2025
- Site or press notice
- 23 Jul 2025
- Env. assessment
- No
Historical activity at this location
28 previous applications on record - archival context, not part of the live application.
Previous applications at this address
Nearby activity
Westminster is slower than most councils at deciding householder applications, ranking #258 out of 296. Only 28% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Westminster is also one of the strictest councils - it refuses more householder applications than almost any other, with only 81% approved vs 90% nationally.
Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.
Leaseholders: Information produced by HM Land Registry. © Crown copyright 2026. Source: HM Land Registry, UK and overseas companies that own property in England and Wales, September 2026 release.
Track this application
5 - 6 William Street London SW1X 9HL
Tracking this application
Not there after a minute? Check your junk folder. It's from alerts@plota.co.uk.
Go to your dashboard →Sign in to view contact details
Applicant and case-officer names are hidden from public view for privacy. Create a free Plota account - or sign back in - and we'll show them, plus you get a dashboard for alerts and tracked applications.
Check your email
Leaseholders, on paid plans
The companies holding a lease of this property or of part of its building, from HM Land Registry's register of company-owned property, with its status, business and the companies that control it from Companies House, is shown to Plota subscribers. Plans start at £49 a month.
See paid plansAlready subscribed? Sign in with the email on your plan and this page will show it.
That's today's owners
Your plan shows up to 100 freehold owners a day on the site, and more from tomorrow. For owners in bulk, the API gives them on every record on the Pro plan and above.
See API plans