Treat this second route like a marriage as you can be sharing this building for many years together and you need to be aligned. 

My wife, only because I am already in marriage business with her anyway and no other business can be more complicated.

After 40 years of marriage, the only words you need to know are "yes dear".Initially, I signed on with KW in South Portland, Maine but quickly found myself literally ghosted when I desperately needed support - including buying my own home! 

Congrats on the marriage!

lenders are like dating, not marriage, try a few before finding the "one" but also consider not having a "the one" but many one's....terrible analogy to say, why in the heck would they not consider lending to someone with apparently a solid income and a paid for property that could now possibly provide further collateral?  

If you are committing to a marriage, you have two choices: let the state govern a future divorce, or determine the outcome of a future divorce yourself.

If the husband had heirs/children from another marriage, they could potentially make a claim for the other portion. 

Ideally they would find a like item of something that's sold with a 3F and a 1F but in this situation I think they would have to use a marriage of both types of homes and combine that valuation with certain deductions with price, sf, and condition of the property.

Partners can be great, but there are a ton of caveats with that setup as well - treat it as serious as a marriage and make sure you outline what each partner's responsibility is going to be in the deal.

I have found partnerships to be very similar to marriage.