They offer interest-only loans, don't charge for appraisals unless the deal actually closes, and have great customer service (they actually close on time unlike some of the lenders my clients have chosen against my advice over the years who ask for my time for underwriting the day before closing).

I recommend finding an accountant who specializes in real estate taxation and tax planning.You may want to consider working with your accountant remotely to expand your options.I would also recommend looking for a accountant willing to work with you throughout the year.

Also consider that green energy is not universally accepted.

That being said, there are other factors to consider like the location in area.

The short answer: Absolutely, yes, but with a few nuances to consider.

People responded by explaining that residential mortgage lenders are looking for US-based customers, who have their residence, income and assets in the States.How do they view foreign debt?

It is in a northern MI Downtown area (opp zone) in a county seat with 2 hospitals, had it re-zoned to mixed use, and is considered blighted which makes it eligible for MEDC funding of up to 50% of project cost.It is 8k sqft (4,000 each level) with the lower level being a walkout (top level is street level with sloped drive down to the rear of the building).

I understand this is part of the learning curve, and once I can have the PM "release" me, I might consider it and save 3k/yr!

Are there other local markets I should be considering? 

As for tiny homes, they aren't considered real property and don't add value to the property.