Again, everything has a value.... but be sure to put a big enough value on your time/effort when dealing with the city/legal/code side of things.As far as multi being different that SFR as far as the BRRRR strategy is concerned. 

Unless, of course, the offer is not legally binding.

What recourse do I legally have?

Otherwise you wouldn’t be writing about it here).From a legal perspective, are there ramifications from NOT kicking them out?

There are many different mortgage and/or deeds of trust documents in use.

Aside from the immense guilt, you could face major legal problems.

You may be eligible for a credit for the taxes that you pay to the other state.If you do the tax return by yourself - make sure to capture items on the closing documents onto your return.

Also, 10 year old renovations will most likely not achieve market rents, which means that any buyer will need to invest in renovating the units)Is the basement unit a "legal" basement unit?

So I have a few questions. 1) As I have never done commercial real estate, am I legally aloud to help them?

Is there a way to do this while legally protecting myself from liability (i.e. having them sign a waiver)?