Why HOA rules exist

The board didn't invent this power

A homeowners association is not a mini government with authority over anything it decides to regulate. Its right to make rules is delegated: granted by the declaration, the bylaws, or a state statute, not assumed because the board thinks a rule would help the neighborhood.

"[A]n association enjoys an implied power to make rules in furtherance of its power over the common property," but "has no inherent power to regulate use of the individually owned properties in the community."

Source: Restatement (Third) of Property: Servitudes, section 6.7, as quoted in Moretto v. Elk Point Country Club Homeowners Association, American Law Institute

That is why the first question for any proposed rule is not "is this a good idea?" It is "where does the board get the authority to do this?" Restrictions on structures, landscaping, or the design of an individually owned lot need a specific grant of authority in the documents. Whether that grant actually exists for a given topic varies by association, so check your declaration and bylaws before assuming.

Rules protect shared living, not just literal nuisances

Rules exist so many households can share amenities, walls, and sightlines without a lawsuit every time someone is annoyed. Courts have set that bar lower than most owners expect.

"[I]t is not necessary that conduct be so offensive as to constitute a nuisance in order to justify regulation thereof." The touchstone is "the rule of reasonableness," and an association "is not at liberty to adopt arbitrary or capricious rules bearing no relationship to the health, happiness and enjoyment of life of the various unit owners."

Source: Hidden Harbour Estates, Inc. v. Norman, Florida District Court of Appeal

An owner pushing back with "this isn't a nuisance, you can't regulate it" is citing the wrong standard. A rule only has to be reasonable, aimed at the community's health, happiness, and enjoyment of life, not written to punish one owner. Even a two-to-one owner vote in favor of a rule did not, on its own, make that rule reasonable in the case above.

Rules sit at the bottom of a document stack, on purpose

Practitioners describe three layers: the declaration (the CC&Rs) creates restrictions that run with the land and bind every owner; the bylaws govern how the association operates as a corporation; and rules are board-adopted regulations for day-to-day matters the other two don't cover.

Rules sit at the bottom because they are the easiest layer to change, so courts hold them to an actual reasonableness test, while a declaration restriction carries a strong presumption of validity. See Reasonableness for what that test looks for, and Covenant vs rule for how to tell which layer a given restriction lives in.

How much rulemaking authority your board actually has, and whether a state statute adds to or limits it, depends on your declaration, bylaws, and state law. See Board authority to adopt rules to check yours.