I want to purchase an investment condo for $150,000.I want to get Heloc loan from my other investment condo for $50,000 and use it as downtown payment for this condo.Can I get a 30 year fixed conventional loan for $100,000 and use $50,000 for down payment from heloc?

@Summer Shelton, FHA allows you to use rental income and so does Fannie Mae/Conventional loans.

Two separate property appraisers (at the direction of the lender) were sent out to appraise, and neither was willing to appraise it as a "residence", and thus financing fell through (conventional primary loan).

Conventional?

The reality is that with the super low inventory we have sellers don't have a reason to give you a 50% discount, so your numbers get squeezed and you will end up leaving cash in the deal.

Your goal is to plant the idea in their mind and create a situation where selling to you feels like the easiest and most logical solution for them.If you haven’t already, the first step is to get pre-approved for a mortgage so you know what you could afford if you were to purchase the property conventionally.

I had an inventory of the items along with the lease agreement.

.: Quote from @Benjamin Aaker: Since you will be renting it out you should get a conventional loan.

You also get access to conventional financing. 

What are other ways to get this property with out having to owner occupy, FHA, conventional?