If you aren't going to assume the loan as discussed in #2, then you could do a "Subject To" deal where you just take over payments BUT that is really only good for the seller if they are facing foreclosure.

I hope everyone is well, I came here because I need expert advice from you guys, let me tell you my situation: I have a investment property that i purchased 2 years ago and is valued at 65k that does not have any mortgage and that is already paid off, I want to use that property to buy another one for down payment , the question here is: What is the best way to do it. a heloc or a cashout refinance and why. your response will be appreciated :)

Even if they stopped reporting your payments the history would be there. 

A question I have is, if i rent out the main unit that has 4BD-2B, is it better to get a long term renter with steady rent payments from them or rent out for airbnb?

You can also take advantage of lower down payment loan products rather than going 20-25% down on a conventional investment loan. 

Cost Overruns: After the final payment, the contractor claimed there were additional costs of $60K.

An example, a small down payment initially, but the note has now seasoned for 60 months with on time payments documented by a third party servicer.

As mentioned elsewhere, breakeven on cash flow is not the same as break even for taxes.Let's make some assumptions:Rental income = $1000Mortgage payment = $400 - but $300 is interest and $100 is principalOther expenses (repairs, advertising, utilities, etc) = $600Depreciation = $250The above scenario creates a break even from a cash flow perspective, however the tax scenario looks like this:Rental income minus the mortgage interest (principal is not deductible) minus the other expenses minus depreciation looks like this:1000-300-600-250 = $150 LossIf your income is over $150,000, then you cannot deduct that loss, but you can roll it over to future years. 

We have done 8 self storage locations and 2 country subdivisions selling lots in the Omaha area and been very successful.  

HI Jewell,If you were to use FHA again, this could trigger the FHA 100 mile rule + 1.75% upfront fee, however with a few exemptions Indeed FHA allows you to put 3.5% down payment to invest in 1-4 units.