If they continually kill deals they will get a reputation and the Realtor referrals will dry up and they will have little work.

They will let you hang to dry. 

The vacation rental market hasn't suddenly dried up.

Cat and dog hair is not your AC friend.  

What do you do w/ the property after the work has dried up?

However, I don't want to leave my landlord high and dry with the vacancy.

BTW Denver requires a permit for pretty much anything from 1/2 a sheet of dry wall and with the new lead regulations you should pretty much assume that ANY work will require a permit and plan accordingly.

I have 32 Ac (all dry and usable) and looking to check if mobile home park is feasible and then develop it.

While you are clearly frustrated and understandably so, your situation is not as cut and dry of that of an ordinary landlord.

And in terms of the work we've had done, I've been told that once you're "dried in" it can also qualify as a fix and flip loan.