If you need to modify the agreement, you need to keep track of the notices/addendums and then over time interpreting the lease becomes messy because the agreement is actually the sum total of ALL of those documents over time.

And to any wondering, no, I don't loose a wink of sleep over using legal tax strategies. yes, I think those who can utilize it have earned it and don't owe a thing to anyone else.

If you can't convert the whole place to a LTR, then let it go and find another place.Having said that, is the place split into 2 legal residences?

Skipping legal help here, especially for a 50/50 LLC, is asking for trouble.Disclaimer: While I’m a licensed attorney, I’m not your attorney.

There's plenty of regulation surrounding the STR industry, but it's perfectly legal and welcome here.

Something else to check with your tax and legal advisors.

Legally you can claim estoppel and latches as a defense as they let it go on for so many years and you relied on it when buying. 

I have bought a few houses after reading the foreclosure notices in the legal section of the newspaper but mostly I find opportunities by just talking to people.

Buy a property that perhaps has a legal suite or a duplex.

Please consult a real estate attorney for legal advice before you act on any comments in BP forums.