Do the math at a 6% loan rate.There's a reason many apartment buildings have been converted to condos and sold.

I they accepted an offer of $118K from my brother but since he couldn't get the loan, we're starting over.

is so what lender did you use that provide non recourse loan?

Look for your states offer to purchase contract online or contact a realtor to get a blank copy. review the agreement to be sure assignment is not expressly excluded. if there is nothing excluding assignment from the contract then writing the words "/And or Assigns" after the name or company's name on the buyer's line should be sufficient.Good luck!

Refinance into a debt service loan.

It may sound nice to pay a 6% management fee but the extra fees can add up to be more than the other company that charges 10% with no additional fees.

It's not an insurance company/carrier. 

If that's what you're really after I would start with the basics of what kind of bank loans either residential or commercial are available to you - not saying this is the best option, but it's a good place to start.

If you are moving from your SFR to another property, then you should be able to get a 5% down loan or even 3% if it's FHA.  25% is only if you won't be living in the property in my experience.

This is what my company does for our clients..