Front elevation of a terrace of houses at 1-8 Trevor Street, Knightsbridge, looking southeast towards Trevor Square. Trevor Street and adjoining roads were laid out on the site of Powis House, the late seventeenth-century mansion of the Trevor family. The architect William Fuller Pocock developed the estate, and laid out Charles Street c1819-21 (renamed Trevor Street in 1936). 1-8 Trevor Street is a terrace of three-storey houses with basements, iron railings at ground level, first-floor window balconies and stucco to ground floor and parapet. 1-8 Trevor Street was Grade II listed in 1970, listing number 1066212. Houses on the east side of Trevor Square are partially visible and beyond them rises the rear elevation of Prince's Court, a block of flats designed by architects George Valentine Myer and F. J. Watson-Hart and built 1934-35. Many cars are parked on the street, including a Hillman Minx convertible, a Renault Dauphine and in the foreground an Austin A40 and a Volkswagen Beetle. A nineteenth-century cast-iron lamp post stands outside number 1, Grade II listed in 1987, listing number 1066213. 1-8 Trevor Street lies within the Knightsbridge conservation area designated in 1968, and is still extant, as are the houses in Trevor Square. Prince's Court is now a mixed-use residential and commercial block.