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The source does not give a direct link to this application. Search for reference 26/00351/FULL on Westminster City Council's planning pages, or see the Datahub record (raw JSON).
Use of all floor levels at 38 Portland Place as Class E (office use) and residential (Class C3) at 9 Cavendish Mews north, removal of link building between 38 Portland Place and 9 Cavendish Mews North at ground, first and second floors, formation of a new rear stair core to main building, new external fire escape stair, creation of new terraces to office space in connection with plant space and the installation of air source heat pumps, internal alterations throughout, external alterations to the front and rear facades of the mews building, internal alterations to create new residential units, creation of new terrace spaces (Linked to 26/00352/LBC)
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The source does not list documents, or they are only on the council’s own page. We link to documents; we never copy them.
No changes since we first saw this application on 8 Nov 2026.
Data last updated 8 Nov 2026, 16:47 UTC. Councils are the authoritative record and may have changed since.