But use of that particular FORM (the several pages of checklist) is not. Disclosures go in MLs like they go anywhere (not just RI). And saying “unknown” is an answer to a disclosure. A seller not having that form when it’s on market is not unusual. That’s my point. Only some sellers (or agents who require their sellers) both in RI and MA as well use that kind of form. Lots of times it’s just disclosed in the disclosure box on the mls listing or in the PS amendments once they agree. But if it’s a fsbo I’d be even more wary - or a flipper acting as the agent.