I also have personal W2 income, if that matters.Is there a loan out there for a set-up like this at 15% down? 

You must report rental income on Schedule E and can deduct rental expenses like repairs, maintenance, property taxes, mortgage interest (allocated between personal and rental use), and depreciation for the rented portion.

None of this has anything to do with your personal tax return.

Would a HELOC or home equity loan on my personal home be a good idea to fund this?  

The person I would seek advice from is a CPA about this. 

Imagine making millions of dollars over the course of your career and then having to pay 30-50% every year to uncle sam instead of compounding that cash over time.This is exactly what real estate professionals have learned to mitigate.To reduce their taxable income, they just buy a building every year, do a cost seg, and use depreciation to reduce their tax liability dramatically.Their personal wealth snowball grows much larger and much faster than their W2 counterparts who give most of their money back to the government each year.Following this strategy as a real estate professional is one of best ways to end up with a much larger net worth at the end of your career.

@Laurens Van swol a few banks that we've worked with in the past allow you to close in your personal name.

I've done this with my properties because I'm well known in my small town and don't want people to know what I own.LEGAL PROTECTION: By placing your assets in an LLC, you are legally separating them from your personal assets.

@Alvin Sylvain I agree the emotional support animals are B.S. but they are legal and we have to abide by the law.If the animal is an ESA, you are allowed to ask if the person is disabled and what service the animal provides.

If it did flood though, I personally would steer clear.