Or you can sell it, split the equity, and go separate ways.I'm not a fan of borrowing from family/friends unless all parties are honest and everything is documented in a written contract.

Completing AP requires the other party to file a suit in court during which the judge determines that the case has merits, and ultimately transfers the property to the filer.

On June 7th, we sent an itemized list of deductions via text; he responded on June 8th, disagreeing and threatening legal action.

Give proper legal notice of non-renewal and get them both out.

If not, then you really need a strong legal structure stating how these properties will be governed going forward, including management, tenant selection, capital expenses, etc.

Quote from @Brandon Larson: Yea, @Nathan Gesner is that legal to enroll someone in an insurance policy and then charge them for it?

NJ is very tenant friendly state on the legal side.

Work with your commercial lender/insurer/lawyer/personal banker and see if they know of any interested parties.4. 

This extra road frontage now also qualifies my property to be able to be legally converted into a triplex from a duplex.

I don't necessarily need the standard features of pm software, such as rent collection, bookkeeping and maintenance requests, though that could help; but do need a clearinghouse of important information, such as leases, legal docs and other information; maintenance vendors I use; maintenance history; and some kind of tracking system, where I can record the various current projects I'm working on within the business.