Can an HOA enforce rules that are not written in the code they give to the property owners? I was given a code at closing that did not have any rules against keeping chickens. After bringing chickens and setting up a coop for them, I got a letter from the HOA saying "chickens are not allowed". However it is not written in the code they gave me. Of the neighbors that surround my property, half of them are supportive and half are disgruntled. Can they enforce a rule that they did not inform me of at closing that is not written in the code they gave me?