Keep in mind that month+ rentals are usually covered by state laws governing tenant / landlord rights and responsibilities.

Hello,I'm planning on investing in a 4 unit property with my sister-in-law using her as the primary buyer qualifying for a first time homebuyers program and me providing the capital and being a co-borrower on the loan.

Requiring electronic payment as the only payment could violate federal law.

Posters with no knowledge or understanding of the law arguing legal concepts and quoting “laws” they just made up4.

- Do they provide a Perpetual Cost Segregation Evergreen Annual Review to find annual expenses from dispositions, additions, favorable changes in tax laws while also using the changes to drive lower insurance and property tax premium?

State laws define what 'doing business in' for this purpose means.

This is reason #42 why I only offer MTM leases.Now that that is out of the way, if they are on a term lease, just give proper notice to terminate based on your lease verbiage and local laws(!). 

Read the laws in your area regarding when deposits (or bills) must be sent. 

I believe NYS law is 15 days to keep the things, but I have also read 30 days is standard. i want to get the property cleaned up and start working on it...

Legal requirements for giving notice include checking local and state laws, providing written notice, clear communication, specifying the move-out date, offering assistance, offering more than 30 days notice as a goodwill gesture, and providing 45-60 days notice for a smooth transition, reducing stress and potential conflict.Good luck!