Buy and hold re-fi for long term

[Kenneth LaVoie]

I have 12 buildings consisting of 49 units (SFH's all the way up to an 11 unit). 3 are free and clear, the rest are ARMS of different types. (i.e. 3/3's, 5/5's, 7/1's etcl) all 20 year / 25% down / 5% neighhborhood. several of the 3/3's are resetting this year at 4.5% for another 3 years. I will be exchanging one of those soon for a 10 year lock-in at 5.5% (10/10) still 20 year amortization. I'm trading a low rate locked in for 3 years for an "ok" rate locked in for 10 years.

My buildings are all owned by my LLC so I cannot get FNMA backed loans, apparently.

Has anyone had any luck with getting full term (i.e. 15-30 year, locked in rates) from the private sector? I suppose a good follow up is, "what is the private sector? how does one go about finding them?" I would like to re-fi as many as possible up to 5.5-6%, for full term, 15-30 year loans, all 70-ish LTV. Any thoughts or hints in the right direction would be most appreciated!