Finding a piggyback mortgage for a MF property?

[John C.]

Good morning BP,

Long-time lurker, first-time (very enthusiastic!) poster. 

I'm looking to make my first foray into RE investing, having spent a decent amount of time analyzing potential properties. While I have the cash to put forward as a downpayment on this property I've zeroed in on, I'd prefer to leverage that cash for incremental investments. For context, it's a $700-800k 2-unit MF, which I'm indifferent about in terms of going the owner-occupied vs pure investment route. I don't qualify for USDA / HomeReady, and don't currently own any property that I could use to leverage a HELOC or anything similar on.

I read up on piggyback mortgages (80/10/10 and 80/15/5), and I was hoping to hear from those with experience about the reality of finding/executing on these. My credit rating is 790+, my income / assets would satisfy any mortgage from 20% down to 0%, and again this would be my first purchase. 

Not to barrage with additional questions in addition to the overarching one above, but:

• What type of originators would handle this? Where would I find them?
• Are there any spoken / unspoken rules I would need to know about approaching these lenders for these types of loan arrangements?
• Do the number of units matter? I know there's a whole schedule of potential LTV ranges for SFH vs 2-unit MF vs 3-4 unit MF, with this also changing by OO vs pure-investing status.

Thanks BP!