Yes, and a whole lot more. By purchasing your home within the HOA (or a condominium association), you agreed to abide by the HOA’s governing documents that typically contain restrictions on what the homeowners can do with the exterior of their homes. In addition to requiring homeowners to purchase certain types of mailboxes, governing documents often restrict paint colors, window types, lawn ornamentation and a host of other items. So before you jeopardize the future of your garden gnome colony, make sure that you read and understand the governing documents before you purchase.