Can they fine me without a warning or any proof?

Usually they should not drop a fine on you out of nowhere. Most associations send a written notice first, and many give a chance to fix a curable problem before money is added. "Proof" is often a photo, an inspection note, or a neighbor complaint that they later verified. They also should not fine you based on a rumor with no description of what they think they saw.

How it usually works. The common pattern is warning, then violation notice with a cure date, then a fine if it is still there. Some violations are treated as uncurable — a loud party last Saturday, an architectural change already built, a one-time safety issue. Those may skip the "fix it and we will drop it" step, but they still usually need a written notice and a hearing chance. Proof at the HOA level is informal. A manager's photo, a date-stamped inspection, or testimony from the person who drove the community. You can and should ask for that material. If they refuse to say what they observed, when, and under which rule, the notice is weak even if a board is sure it is right.

What actually controls this. Your CC&Rs, the adopted fine policy, the letter, and your state's statute. Many states require notice and a chance to be heard before a fine sticks. They do not all require a warning first. Texas Property Code 209, as an example, generally requires certified-mail notice and a reasonable cure period for curable, non-health-and-safety violations; if you cure in time, a fine may not be assessed. California Civil Code 5855, as an example, gives you a chance to cure before the disciplinary meeting. Florida, as an example, requires a description of the alleged violation and, if applicable, the action required to cure. Arizona 33-1803, as an example, requires notice and an opportunity to be heard. None of that is a national evidence rule. Some governing documents require photos. Many do not.

What you can do today.

1. Ask in writing for the photo, inspection report, date, time, and the exact rule.
2. Take your own dated photos now, including wide shots that show context.
3. Check whether the letter is a warning, a cure notice, or an actual fine. The label on the envelope can be wrong.
4. Request a hearing if a window is open. Missing it because you were waiting for "proof" is how fines become final.
5. Keep paying regular dues.

When this is bigger than DIY. If they fined you a large amount with no description, no hearing, and collection or a lien already started, talk to a lawyer licensed in your state. A hearing in the next few days is also a reason to get local advice rather than guessing.

This is general information from an AI helper, not legal advice. Confirm it against your documents and your state’s law. If a deadline or hearing is coming up, talk to a licensed lawyer.