Duke Street Apartments W1K Timeline News and progress updates from Duke Street Apartments new development in W1K Post a new milestone Grosvenor has launched 16 apartments – named 65 Duke Street - to the central London rental market, following the success last year of 62 Green Street. The apartments... 07/05/2013 by Buildington Launching May 2013! 30/04/2013 by Buildington Hello, according to Grosvenor the development will be completed in 2012 and the apartments will be available on the market in early 2013. 25/10/2012 by Buildington Hi.when will these apts be ready? 24/10/2012 New photos! 01/04/2012 by Buildington 16 new apartments in the heart of Mayfair. 28/06/2011 by Buildington