@Erin Elam and @Bo S. Yes, that is correct, I used 2 loans for $0 out of pocket initially. And yes, since I got the property at a price that was under 75% ARV even with rehab, I was able to work in the interest and fees into my 75% mortgage loan from the bank when I refinanced the property.
The gap lender I used is no longer doing gap loans - too high of a risk for not much profit was their reasoning (I was always quick to pay them back - I guess others weren't). Their fees for me came to about 10% on ~$5,000. The HML I use is Longhorn Investments. Their rates starting out are 4pts and 15% annually over a 6-month loan with no prepay penalties - I think those are their current rates, but get a quote from them if they do loans in your state. They lower your rates the more you use them.
Now it is important to note, that in my market at least, properties that fit these criteria are now anomalies. Over 2018, I was not able to purchase 1 house that fit this mold via the MLS, Zillow, or wholesalers. The only way to get properties like this in St. Louis is through direct to seller marketing - at least until this market settles down.
It is also important to note that none of the properties I purchased ended up being $0 out of pocket when I refinanced. I averaged about $3-$5k out of pocket with a 75% loan. I was ok with this because annual rent would cover that in the first year or 2. It is possible to use this process to have $0 out of pocket, however, those properties are hard to find.
Good luck!