k-1 and state taxes

Hello turbotax community,

I can't find a clear answer to this question:

 

I am a limited partner in various LLCs; they mostly buy and operate multifamily apartment complexes (usually one LLC owns one apartment complex) .

 

How to determine in which state(s) to file "nonresident" taxes for a given K-1?

 

Example 1:

I live in state A, the LLC is registered in state B, it owns an apartment complex in state C. It's not a publicly-traded company. The K-1 does not contain any "state K-1" forms. The K-1 shows a profit for this year.

 

Example 2:

Same as above, but the LLC owns apartment complexes in many states.

 

Example 3: 

Same in (1), but the K-1 shows a loss this year. Do I have to file nonresident state taxes if I have a loss?

 

Thank you!

your ghettodawg