A few comments from my perspective (and after reading @Dan H. comments):I agree with Dan, and view this as a negative cash flow property as well, given that more than 20% down was necessary to make it work with what I suspect is a non-commercial 30 year note given the interest rate. 

That way they keep their licenses and ratings.I don't see much of a difference really.Don't keep them out as they will get increasingly suspicious and they might pull your permit for non-compliance.

You will be required to get a foundation inspection report on top of an appraisal and you are required to pay for both.That is why I said make sure you do your research because if you pay for an appraisal or foundation inspection report and its not within guide lines you will have just wasted anywhere from $650 to $1000.00 non refundable.  

Well it looks like non-profits are exempt....So I suppose Dope Traffickers will just buy an ongoing concern non profit and operate that with ownership as an IBC (International Business Corporation) in some privacy haven, or Russia, or Yemin or somewhere (if those places have privacy laws???)

Non-tangible property includes buildings, land or other inherently permanent structures.I get a lot of questions on which group specific assets belong in, so I put together a list to help.Non-Tangible PropertyBuilding (27.5 or 39 Year Useful Life)Land (Non-Depreciable)Paved Parking Areas (15 Year useful life)Swimming Pools (15 Year useful life)Fences (15 year useful life)Bridges (15 year useful life)Exterior Landscaping (15 year useful life)Docks (15 year useful life)Sidewalks (15 year useful life)Tangible Personal PropertyMillwork or decorative trimCarpetAir Conditioning equipmentShelving, cabinets and display racksAccordion doors and partitionsWall coveringsInterior landscapingNeon or other signsDecorative and business specific activity light fixturesGenerators, machinery and kitchen equipmentWindow treatmentsWhat other questions do you have regarding cost segregation?

Question is, if I have the means to put a high enough down payment on a house to be cash flow positive (assuming my expense estimates are accurate, etc.) is that something that I should do?  

The other non-math issues I'm good handling myself. 

I’ve come across details regarding the Prohibition on the Purchase of Residential Property by Non-Canadians Act, and it seems there are exceptions for buyers with a valid work permit or for properties outside Census Metropolitan Areas (CMA) or Census Agglomerations (CA).Do you know if certain types of work permits are more favorable for this purpose?

Also a non-starter is your hyperbolae; "toxic waste lot's"......

I know that the general guidance is that emergency funds aren't to be invested, but given our financial security and the fact that we already have a personal e-fund in a safe, non-volatile location, would it still be crazy/unwise to invest this 15k in an S&P500 index fund in a brokerage?