25/09343/LBC.
56 Upper Montagu Street London W1H 1SN
Listed Building at 56 Upper Montagu Street London W1H 1SN, received 24 Dec 2025 — pending.
What is it?
Use of ground floor and mezzanine levels to rear as residential (Class C3) use; deconversion of ground floor and mezzanine levels to rear together with two studio flats and one one-bedroom flat to form one three-bedroom maisonette; creation of reconfigured office unit in basement; replacement of all but one window with slimline timber double glazed units installation of secondary glazing to one window; renovation of shopfront; reinstatement of glazed fanlight with opening vent, new solid panel door, and awning; new glazed doors to south elevation of mezzanine garden room; new metal balustrading across rear boundary and raised terrace surface level with walk-on roof lights; replacement of con
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What was filed?
Documents open on the Westminster portal (the portal needs its documents tab opened first — the link handles that). View the application page ↗
What happened?
Status: Pending. No decision is recorded yet.
Timeline
Public response
Who is involved?
What affects it?
Context around the site — not part of this application. Designations over the site: use the map's designations filter (conservation areas, listed buildings, Article 4, flood risk …). Decisions within 250 metres of the site are listed below — context, not this application.
Other applications within 250 metres (context — nearby, not this application)
No other geocoded decision is recorded within 250 metres.