A byelaw terraced house is a type of dwelling built to comply with the Public Health Act 1875. It is a type of British terraced house at the opposite end of the social scale from the aristocratic townhouse, but a marked improvement on the pre-regulation house built as cheap accommodation for the urban poor of the Industrial Revolution. The term usually refers to houses built between 1875 and 1918. Despite a century of slum clearances, byelaw terraced houses made up over 15% of the United Kingdom's housing stock in 2011.