Second Mortgage Savior + A New Question

[Jay Hunt]

Hi - had a brutal process trying to refinance an investment property with a lot of equity.  Found a great guy, Peyman Broukhim, who--for the first time in this process--did what he said he was going to do, when he said he would do it.  He's a direct lender (which seems to help a TON), and was able to do something I HADN'T (shockingly) considered:  a second mortgage.  Went through like a breeze.  Wish I'd found him first!

Sidebar:  so that it doesn't appear like I'm being pimped out, I'm not a shill for him, he just was super professional and FAST.  I think at one point, he exclaimed "this is a slam dunk:  whoever you started with didn't know what they were doing!" LOL.  I'm guessing I can't link to him in the post, but if anyone wants his contact info, feel free to PM me. 

While I ended up going with him, a contact I made here:  Narmina Gasanbek, I would strongly recommend as well.  If the deal with Peyman hadn't gone through, she'd be a shoe-in for the refi - Super pro as well!

So, all of that exposition aside, I am a "second mortgage" convert and want to do a 75% LTV one on my owner-occupied property. I'd take the proceeds and put a down payment on another 2/3/4-plex.

FINALLY to my question:  do lenders (hard money or not) factor in ANTICIPATED rent in a multifamily property evaluation?  More texture to that question:  I own a 4plex and live in one of the units.  With the second mortgage, I'd spend part of the proceeds to move out and fix that unit up to rent it out.  But of course, the lender would have to estimate what my (larger than the others) unit would go for.  

1) Are lenders able to do that?

2) Is there a formula that's used (rent $/sq ft, comp units in area, other...?)

Thanks!