The governing documents may not limit or prohibit the display of the United States flag on or in the owner’s separate interest or exclusive use common area, except as needed to protect public health or safety. (Civ. Code §4705; Govt. Code §434.5; 4 U.S.C. § 5) Certain noncommercial signs and flags are also permissible in common interest developments. (Civ. Code §4710) See each statute for specific requirements and limitations.