They will take a $1,000 rental, subtract their $600 for the mortgage, and claim they are cash flowing $400 a month. 

I subtracted the rent owed and all the repairs and cleaning from the deposit and they owed me about $3000.  

Your daily rate certainly should be subtracted from future payments if you return to live there.Now with that said, many ins policies offer "loss of use" and It would not be unreasonable to ask for the DIFFERENCE.

I would subtract the cost of mailing the 2nd time.The money is not yours and you should try to return it.

Now subtract esimated repairs, vacancy, etc, and that gets you your net rental profit.

They even ask me to take care of minor issues themselves and send the bill for my approval upon which they subtract it from the rent payment.  

According to the National Association of Realtors the average Flip makes $64,000 Gross and when you subtract costs nets $15,000 and takes on average 6 months from finding the property, fixing it up, putting it on the market to collecting the check.

Usually doors and windows are not subtracted because they take more time to cut out. 

Hi Guifre,Thanks so much for your advice.I've calculated my net cash flow per month to be $160/mo, by subtracting net income $1000/mo minus total monthly expenses.

If big holes and or done on purpose, I would most definitely have it fixed and subtract damages from there security deposit.