Brandon,Credit score? 

I know it's a line of credit, but would I receive a card / account number?

We have excellent credit and can quite easily qualify for a mortgage.2.

When you refinance, banks look at your property's value, not your personal credit.

@John Mocker good tip. 

Everything checks out except they have terrible credit.

Looking for guidance, tips, suggestions, best practices as to how to go about it.

@John Mason, lenders will look at your credit history, income and assets held to determine your eligibility for a 15% down payment conventional loan.

We are currently fighting to get that money back through our credit card.

@Nick KnoblachOf course, you should always confirm with your own CPA who is familiar with your situation, but here's a few generalities:- CA taxes residents on worldwide income, so the CA resident will likely be taxed on the entirety of income that he/she receives on his/her CA resident tax return, including his/her share of rental income- CA will likely want to collect tax on all income earned in CA due to CA-sitused real property, so any non-residents in CA should likely be prepared to file a non-resident income tax return in CA to report his/her share of income earned from the CA real property-I'm not familiar with MN rules, but most states generally allow for a credit for taxes paid to another state.