One aspect that was unique to Teotihuacán's layout was their utilization of apartment compounds. Over time, there were over 2,000 apartment compounds throughout city. These compounds didn't just house one family, but housed multiple families. These housed various people in all aspects of social classes as well. However, these people were not sent to live in certain compounds at random. Teotihuacán had a housing system which ensured that people and their families who had the same occupation would also live with other families with that same oppcupation. Rabbit breeders lived with rabbit breeders and plasters lived with plasters. However, it was also very common for people to do multiple specializations. Many did lots of farm work or specialized in some other sort of craft specialty. These compounds provided a standardized residential form but varied on the inside and expressed status, class, occupational, and ethnic differences between families. In every compound, each family had its own suite of rooms for cooking, dining, storing their belongings, and sleeping. They also had areas for directing funerals and burying their dead. Patios were centers of household religious dedication focused on patron or domestic deities.