The Arizona Supreme Court has limited the powers of homeowners associations to amend covenants retroactively when those amendments would unfairly surprise buyers who were not on notice of them when they bought their properties. Kalway v. Calabria Ranch HOA, LLC, 506 P.3d 18 (Ariz. 2022). In this case, the homeowners association adopted new restrictions on owners’ abilities to convey or subdivide their lots, restricted the size and number buildings permitted on each lot, and reduced the maximum number of livestock permitted on each lot. The court held that the original declaration must give “sufficient notice of the possibility of a future amendment; that is, amendments must be reasonable and foreseeable.” Thus owners cannot be retroactively forced to join a community club if not put on notice of that possibility in the declaration. Here, most of the amendments created “new affirmative obligations” such as limiting garage space to 40% of the dwelling,