The Portman Estate was developed into grids of streets for affluent residential housing from the mid-eighteenth century.[1] Gloucester Place was named after the Duke of Gloucester, younger brother of George III.[2] The street has largely kept its original Georgian character. For some of the route the street is paralleled by Gloucester Place Mews to the west. Once part of the mewsstabling for the houses, it now consists of independent dwellings.[3] The 1935 art decoDorset House apartment block was completed in 1935 at the junction with Marylebone Road. On the opposite corner of the junction is the neo classicalMarylebone Town Hall the side of which faces onto Gloucester Place.