9 Cavendish Square London W1G 9DF Data via plota.co.uk
Description
Installation of louvre grille in place of existing above-door glass panels on the lower ground floor. Data via plota.co.uk
Last checked
Decision outlook
Plota predicts a decision between 8 Nov 2026 and 17 Nov 2026, from Westminster's recent extensions.
Day 21 of the 56-day target. Westminster usually decides extensions by day 55.
Plota live figures for extensions decided by Westminster in the last twelve months, from validation. Westminster decision record →
Site constraints 11
Show all 38 with distances
- 10 m10a, 11 and 12, Chandos Street W1Grade II
- 14 mBridgeGrade II*
- 35 m14 Cavendish PlaceGrade II
- 42 mThe Langham HiltonGrade II
- 47 m12, Cavendish Place W1Grade II
- 48 m6-14, Harley Street W1Grade II
- 48 m15, Cavendish Square W1Grade II
- 55 m4, Harley Street W1Grade II
- 56 m2, Harley Street W1Grade II
- 56 m16, Cavendish Square W1Grade II
- 70 mNumber 7 and Attached RailingsGrade II
- 76 m2-6, Chandos Street W1Grade II
- 87 m9-13, Queen Anne Street W1Grade II
- 88 m5, Cavendish Square W1Grade II
- 91 m15 and 17, Harley StreetGrade II
- 91 m13, Harley Street W1Grade II*
- 92 m1, 3 and 5, Harley StreetGrade II
- 94 mUniversity of Westminster (formerly Regent Street Polytechnic)Grade II
- 99 m21, Harley Street W1Grade II
- 100 m4, Cavendish Square W1Grade II
- 102 m17, Cavendish Square W1Grade II
- 107 m25, Harley Street W1Grade II
- 108 m18, Cavendish Square W1Grade II*
- 112 m3, Cavendish Square W1Grade II*
- 112 m289-305 and 313-319 Regent Street W1 and 3 Cavendish PlaceGrade II
- 115 m29, Harley StreetGrade II
- 116 mHarcourt HouseGrade II
- 118 mNo 2 and Attached Railings No 4 and Attached RailingsGrade II
- 119 mChandos HouseGrade I
- 121 m8, Queen Anne Street W1Grade II
- 121 m14 and 15, Langham Place W1Grade II
- 129 mStatue of Lord George Bentinck (at South End of Square Garden)Grade II
- 130 mBroadcasting HouseGrade II*
- 131 mGroup of 3 K6 Telephone Kiosks Adjacent to Former Langham HotelGrade II
- 139 m1 and 1a, Cavendish Square W1Grade II
- 141 mChurch of All Souls, Langham PlaceGrade I
- 147 mRoyal College of NursingGrade II
- 149 m37, Harley Street W1Grade II*
Checked on 6 October 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 October 2025, 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
Fourth Floor 2 Cavendish Square London W1G 0PU
Installation of internal secondary glazing to the 4th-floor windows, with intern...
3 Cavendish Square London W1G 0LB
Renewal for a temporary period of six months for the display of a non-illuminate...
14 Cavendish Square London W1G 9DB
Details of doors (external) showing adjoining fabric and key details, windows sh...
Underground Car Park Cavendish Square London W1G 0PG
Details of the Site Environmental Management Plan pursuant to condition 3 of pla...
Nearby new applications
1 Hanover Street London W1S 1YZ
Details of updated method statement of the façade repairs and cleaning proposed ...
196 - 198 Oxford Street London W1D 1NT
Replacement of shopfront.
Open Space Manchester Square London W1U 3HQ
T1. Platanus x hispanica London plane Reduce the crown by up to 4m on the N (for...
Basement To First Floor 225 Regent Street London W1B 2ED
Display of new non-illuminated fascia sign measuring 0.30m x 1.42m and externall...
22 Harley Street London W1G 9PL
External alterations to the front, side and rear elevations, and erection of a r...
21 Westmoreland Street London W1G 8PN
Detailed drawings showing reduction in height of the terrace screening on the no...
Historical activity at this location
32 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.
Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use
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.
Freehold owner: 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.
Freehold owner, on paid plans
The company that owns the freehold, 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