Several gentrified areas have developed, and areas of terraced townhouses on streets such as Fentiman Road and Heyford Avenue have higher property values in the private market; however, by far the most common type of housing stock in Vauxhall is flats, both conversions and purpose-built blocks. Vauxhall is also a popular residential area for members of parliament and civil servants due to its proximity to the Houses of Parliament and Whitehall; Kennington is within the area wired for the Commons' Division bell. Some 18th- and 19th-century properties also survive – most famously Bonnington Square, a community that emerged from the 1970s–1980s squat scene in London and remains as mostly housing co-operatives today.