@Ben Narro     In California, some of the credit unions offer RV loans that should cover a tiny home on wheels.

Typically, mortgage lenders/brokers which are people who get you that mortgage will charge slightly more interest than competing established credit unions.

@Mike HannemanYour post was overly dramaticYour property is done and rented so either eat the hard money interest for 6 months with less cash flow or go find a local credit union who will lend based on portfolio Not that hard

I am in the military and bought it last year (Aug 2017) for 295k.

I'm in the military thinking about buying my first house for investment.

I have had really good luck with Utah community credit union.

I'm told I should be looking at credit unions.

After working with Navy federal credit union, I was able to get approved for ~600k(1-2 unit SFR), 30yr foxed,4.5%interest, 0%down, and 2.2% VA funding fee which is wrapped into the loan. 

Chris -   some lenders  will not let a HELOC in 1st position.....so watch for this …...most lenders  will not do helocs on  investment  property only on primary residences  ( there may be some exceptions )   …..if these have 2 adjacent tax lots - you prob wont find a lender to lend one loan on both  properties  …..I would recommend  checking with the smaller banks and cedit unions in your area ( n Pierce / s King counties ) good luck

I am the real estate agent and we used James Hirbour from Jeanne D'Arc Credit Union for the mortgage and had a great experience.