20 Air Street London W1B 5AN Data via plota.co.uk
Description
Installation of a ventilation louvre within an existing third-floor window opening and associated mechanical ventilation equipment. (Linked with 26/06387/LBC) Data via plota.co.uk
Last checked
Decision outlook
Plota predicts a decision between 7 Nov 2026 and 16 Nov 2026, from Westminster's recent extensions.
Day 18 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 →
Associated applications 2
- Installation of a ventilation louvre within an existing third-floor window opening and associated mechanical ventilation…
Site constraints 8
Show the other 26 with distances
- 30 m82, Brewer Street W1Grade II
- 33 m2, Lower John Street W1Grade II
- 44 mRegent Palace Hotel (Main Building and Bridge)Grade II
- 45 m4 4a, Lower John Street W1Grade II
- 57 m20, GOLDEN SQUARE (See details for further address information)Grade II
- 57 m19, Golden Square W1Grade II
- 59 m4 Bollards,a Pair at Junction With Lower James Street,one Each at Corners of Lower John Street and Warwick StreetGrade II
- 74 m21, Golden Square W1Grade II
- 74 mThe QuadrantGrade II
- 86 m23, Golden Square W1Grade II
- 94 m24, Golden Square W1Grade II
- 100 mOur Lady of the Assumption Roman Catholic ChurchGrade II*
- 101 m106-130, REGENT STREET W1 (See details for further address information)Grade II
- 101 m11, Golden Square W1Grade II*
- 104 mStatue of George Ii in Centre of Square GardenGrade II
- 120 m2 Lampstandards in From of Number 14Grade II
- 120 mThe QuadrantGrade II
- 122 m4-6 Glasshouse StreetGrade II
- 124 mThe County Fire OfficeGrade II
- 129 m36-40, Great Pulteney Street W1Grade II
- 137 m49 and 51, Brewer Street W1Grade II
- 138 mThe QuadrantGrade II
- 139 m35, Great Pulteney Street W1Grade II
- 141 mPiccadilly HotelGrade II*
- 147 mSmiths CourtGrade II
- 149 mDenman HouseGrade II
Checked on 26 September 2026. Historic England, the Environment Agency, Natural England 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.
Every application in Westminster - and every UK council - as a live feed, an API, or a bulk CSV export.
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Historical activity at this location
30 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.
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.
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