I want to buy the property on terms and demo, build a new house.I want to structure an owner finance deal with him where I either pay him interest only on the lot or no payments for 18 months (or until the new house completes and sells whichever is earlier). 

Even with all that online bullcrap, I think you could find a mentor of this site to help you and learn more for less. 

You need to look at different places, ways to pay, and decide if you'll buy nearby or far away.

When buying an apartment building, it's reasonable for the buyer to ask the seller for copies of leases and proof that the rent is coming in, and the lender will likely ask for that same paperwork too (since that's what's paying the mortgage, not the buyer's personal W2 income, ha).

She'd have to invest some money to create this set-up. 3) Selling doesn't make a lot of sense, because in this market, she'd end up paying the same for a small place, condo, with less flexibility. 

You can do a ‘cash out’ refinance on the rental home as a permanent fixed 20-25-30 year loan to pay off the Heloc on the primary and most likely the equity line on the primary permits a ‘re-draw’ to utilize again. 

They would work enough to pay rent but attend school enough to graduate. 

Is there such a thing as a service that you can pay an experienced real estate investor to find properties for you? 

You pays your money, you takes your chances :)

Would the government pay 100% of the rent due to the tenant being on disibility and eliminate the need to collect any portions of rent that a tenant on non-disibility would have to pay.