As an agent  I want the license mainly to lower fees for flipping, transaction education/experience, networking, and mls access, etc.

Not enough equity in the home(recent SFH have sold for $90,000 and up). 3.with all the fees and closing costs loan will not make financial sense for the bank or myself.

As for commission - our agreement indicates that the Broker's fee will be paid according to MLS % - and that I am not obligated. 

The expenses of running an apartment property include vacancy loss, maintenance, repairs, management, accounting, legal, evictions, depreciation, landscaping, make ready, utilities in common areas, extermination, insurance, property taxes, building code violation fines, permits, usage fees, security, management, leasing fees, etc.  

I've met with a local investor and he's offered to cut me in on profits or pay me a finder's fee if I can bring him possible properties to flip.

Don't forget to factor in the HOA dues as part of your monthly operating costs because you'll be paying them as the owner.To answer your question, it is best to use percentages in my opinion.

I would check with a local HVAC (Hydronic) wholesaler or installer to see if you can still obtain them {be prepared for them to cost almost the same {probably more when you factor in labour} as replacing the entire unit.As for using PEX, I'm not certain if the heat-rated PEX (used for in-floor hydronic heating which runs around 140F) can be used for a boiler and radiators (which typically run around 180F).  

What fees do they charge for their services?

garbage fee is new this year and is $9.50 per unit per month.

But if I turn around and sell instead of holding, I get the $130K less fees and taxes on the gain.