It is essentially under contract to the townhouse owners to maintain the parts of the building that are hard to divide. Even the walls between townhouses are usually outside the purview of the HOA, being jointly owned and maintained by the owners of the townhouses on either side. Like the condominium, the townhouse complex often has common areas for roads, parking, clubhouses, and such. A rowhouse is like a townhouse except that the houses are not physically connected. They are independent structures that simply have no space between them. Technically, they are detached. A building with multiple residential units may simply be owned in common by multiple people, with each having specific rights to a particular unit and undivided interest in the rest. This is like a condominium, but there is no HOA with legal powers. It is much harder to govern, as the individual unit owners often have to agree unanimously or court intervention is required. California statutes recognize three kinds of "common interest developments": condominium, townhouse, and community apartment, with the latter being the owned-in-common concept described above. In Australia, condominiums are known as "strata title schemes" or "community title schemes". One in eight Canadian households lived in condominium dwellings, colloquially known as "condos", mostly located in a few census metropolitan areas according to Statistics Canada Condominiums exist in most parts of Canada though more common in larger cities. They are regulated under provincial or territorial legislation and specific legal details vary from jurisdiction to jurisdiction. In most parts of Canada, they are referred to as Condominiums, except in British Columbia where they are referred to as a "strata" and in Quebec where they are referred to as "syndicates of co-ownership". The townhouse complex of Brentwood Village in Edmonton, Alberta, was the first condominium development in Canada (registered in 1967). With regular condominiums, the unit owner usually owns the internal unit space and a share of the corporation; the corporation owns the exterior of the building land and common area; in the case of a "freehold condominium" the owner owns the land and building and the corporation owns common shared roadways and amenities. The "Canadian Condominium Institute" is a non-profit association of condominium owners and corporations with chapters in each province and territory. The "Condo Owners Association" COA Ontario is a non-profit association representing condominium owners with divisions across the province and districts within the various municipalities. Apartments (Danish "ejerlejlighed", literally "owner-apartment") comprise some 5% of Danish homes.