One thing to think about are the tax implications of being a Canadian paying US taxes.

I’ve read quite a few posts about foreign investor financing but most seem to deal with non-citizen investors without US credit or personal tax filings.

You can still do a 1031 exchange foreign to foreign asset.  

Which increases paperwork & costs for little benefit - if any.4) You'll need an entity in the US.You need to discuss all this with a qualified tax professional or attorney.- For our clients, we provide consultations with a tax attorney that handles over 300 foreigners legal & tax needs.

Looking for various tax strategies to reduce the reality that a large RV or boat is a grossly depreciating assetI would not have a loan, so claiming it as a primary or secondary residence and claiming the mortgage deduction is not applicable.I sold my primary residence and I have several rental properties which I use as I'm fixing them up.What I'm pondering is living aboard and working aboard developing a new product, while traveling.  

A person who has spent his 2000 to 4000 minimum CPA practice hours doing foreign currency conversions at Deloitte for a Belgian energy company may not know the first thing about real estate or anything else.

Hence the lot on which the house resided was taxed at a 45% discount based on actual value, while the tennis lot was taxed at about 4 times what it should have been by value. 

Quote from @Joshua Tucker: What specific tax benefits can high net worth individuals receive from building real estate on tribal land?

The tax paid from your lending proceeds should be the equivalent of your tax rate I would think.

I am seeking an experienced tax advisor (preferably licensed in CA) with strong expertise in US and German tax law, particularly in real estate investments, mixed income (W-2 & self-employment), and international taxation matters.