More traditional things I would suggest, billing back utilities, charging for pets, upgraded finishes to increase rents, charging fees for things like storage or extra parking.Authors I would suggest Ken Mcelroy and Dave Lindahl.

I pull tax delinquent, code violations and evictions from the county website.

State law requires your LLC to register with this agency upon formation for state tax purposes if your LLC will have employees, will sell goods, or will collect sales tax.[25] You can do this online using the Department of Revenue's website."

I'm going to contact THS as soon as I finish this post. 

https://altos.re/r/85542a0    Here is the city were we currently building out a 23 home project.we are priced new construction at 439k to  469k  exactly the sweat spot.. we have only 5 left after starting the year with 21 to sell.. this project will start to finish in just about 1 years time.although from the time I put the first deposit on the dirt to the time we went vertical took two years.. so total 3 year process. 

Everything is refinished, new kitchen, finished basement.   

We spent about $1500 in December out of our cash flow to finish up some deferred maintenance items found during our initial inspection, so that weighed on our NOI a little bit but shouldn't be an ongoing expenditure. 

He's asking me to pay 50% up front and the balance when the job is finished.

His solution to start with is to cut all of the finishes that we added ($21000ish).

So of course I kicked them out of the house.Now, the electrician called me and said he wants me to call the city to check all his works just in case if I hired someone else to finish it and fire hazard happens, I will blame him for causing it.