It seems to me though your short term objective is to get the HOA to take immediate action on the roof.

If a Room for Rent is worth $1000/month, then reverse amortization at current interest rates between 6.5-8.5% for 30 year mortgage would set the price between $130,000 to $158,000.

You've only owned it six months, so you probably haven't dealt with vacancies, maintenance, or capex, but you should be setting money aside for those things.Your partnership agreement (if you have one) should address exit options.

if anything then I would set a flat fee to pay them for their service and then if you do find a property that offers buyers agents money, in which almost all I have seen still do...then I would have the title company back out the amount you decided on and the agent gets the remainder of the amount of commission that's left over. 

Those rules are set by Fannie/Freddie NOT your lender, or any other lender in fact.

So I guess the new investors networked with each other and the dudes who set it up and collected dues.

Are you locked in on the contracts with the current set of tenants?

I would also look at your skill sets and go from there.

Commissions have never been set.

Cash flow in the triangle takes creativity, just want to set that expectation with you.