1) I agree. But if you aggregate all properties into a single activity for QBI, then only one statement is generated for each activity. Otherwise, the added programming to "exclude" a duplicate statement would just add to an already over-bloated program as it is.
2) I don't see any issue with that, and obviously the IRS does not either. (At least not yet, but I don't think it's an issue anyway)
3) I'd have all property owners sign it, just to be on the safe side. It's just not that big a deal to me.
4) Don't know. But I do know that you can't e-file a state return until the federal return has been e-filed and accepted by the IRS. That's just the way some states have their e-filing system set up. So if you mail the federal return, you'll have to mail the state return also. Have no clue how this is dealt with for New York, since that state "requires" the state return to be e-filed.
