Since condos became popular in the 1970s, more than 11 million condominiums have been built, spurred by the idea that buyers can purchase a condominium for less than the cost of a single-family house while enjoying low-maintenance living. The apparent affordability is made possible by buyers sharing ownership of the land and common areas, from roofs to furnaces, while owning a unit typically smaller than a single-family home.     Read the article…………………………….