Derek,The two fireplaces most likely connect to separate flues in the same physical chimney stack {at least you hope they do}.

I recently used a flat fee mls listing service.

Some small towns in PA even require contractors with a state issued license to register at their town hall, apparently to collect the fees for that ...

Why don't you reverse engineer your activity and find additional services that you receive fees for.Step back and think of all the services that people with a house once owned by a family member needs.

Find a seller, find a buyer, put them together, collect a fee.

So you can judge their interest level.If you find someone who is interested work out a bird dog fee or partnership with them.

YOU NEVER pay any fees until the loan closes !

I would offer the property manager a fee for services rendered less the repairs to fix the damage.

It is up to your imagination and finally the money.I have made money selling to a builder or doing it myself because in my area at the time it saved almost $28k in fees to tear down to the foundation if need be.

Owner owes over $5000 Real Estate property taxes and this does not include penalty and other fees .