I am simply using more precise language.I do this because Unrelated Business Taxable Income (UBTI) is generated when a tax-exempt entity engages in a trade or business on a regular or repeated basis (i.e. flipping houses or other types of dealer activities). 

I certainly don't think that the bear market will go on forever, but many signs point towards more price appreciation in the next couple years....after that, your crystal ball is as good as mine:) We've pretty much seen 10% price growth every year for the last 8 years, and average (not median) home price at the end of Dec 2017 was 470k.

Wife and I want to start and actively support a few charities once we get the ball rolling. 

That would dictate where you should be looking.If you spell out what cash on cash return you are looking to achieve and your price range is, you might get more precise answers from fellow BP members

You just type in an address and it will give you a ball park estimate.

In my opinion, if you can make it work it is one of the best ways to make some extra income and really get the ball rolling with REI.

Now, I will say this, if the tenants don't like you that's another ball of wax entirely. 

HELOCS are sometimes harder to obtain, but they are offered up to 90% now in FL, maybe 95% in some states for highly qualified borrowers.However, you can minimize having to sink so much money into "Dead Equity"  by looking at 85% Investment Property mortgages AND where so many so called "Experienced investors" fumble the ball when using a purchase loan is to take advantage of negotiating  'Seller Concessions/ Credit" in the sales price to pay closing costs. 

I would assume they've been hit with low balls quite a bit over the 4 years. 

Doug McVinua precisely.