Unlike divided co-ownership, undivided co-ownership is a term generally used to describe duplexes and other small residential buildings which have 2 or more units that do not divide each unit into separate legal entities. An undivided co-ownership has no private areas or land rights.
Buying an undivided co-ownership means buying a share of a property as a whole. The building has a single tax account and one mortgage which is split between however many shareholders may be sharing the property. Exclusive access to the dwellings and parking spaces is agreed upon by the shareholders and stipulated in the ownership agreement between parties.