In the United States and Canada, a townhouse has two connotations. The older predates the automobile and denotes a house on a small footprint in a city, which because of its multiple floors (sometimes six or more) has a large living space, often with servants' quarters. The small footprint of the townhouse allows it to be within walking or mass-transit distance of business and industrial areas of the city, yet luxurious enough for wealthy residents of the city. Townhouses are expensive where detached single-family houses are uncommon, such as in
New York City,
Philadelphia,
Montreal, and
San Francisco. A
brownstone townhouse is a particular variety found in New York and to some extent in Philadelphia and
Boston. ==United Kingdom==