However, if your state/locality allows unpaid utility charges to go against your property as a lien, then I would go the route of limiting usage as suggested. 

We also charge top price and are very picky when screening.

We don't charge interest per se.  

Such charges are thus duplicative and a deceptive business practice.    2.

Hey I'm in the hunt to purchase my first investment property and I was wondering are there any free services that allow you to this search free of charge I'm in Miami Florida anything would be of great help

Hey I'm in the hunt to purchase my first investment property and I was wondering are there any free services that allows you to do this search on property liens free of charge I'm in Miami Florida anything would be of great help

Hey I'm in the hunt to purchase my first investment property and I was wondering are there any free services that allows you to do this search on property liens free of charge I'm in Miami Florida anything would be of great help

Of course that would get my attention, as my license would be suspended until I repaid the bonding company,  then issued the county a new bond, which may be very difficult & expensive to get any company to write.The State of Arizona actually charges every contractor a fee of about $500/year, and runs their own fund that allows any customer to collect up to $30,000 for damages.  

You didn't account for the interest charged to the mortgage in your figure.

@Karl JohnsonThe way I do it is to enter into a lease and an option with the sellerI charge an option release fee to a tenant buyerThen a new agreement between the seller and the buyer is createdThe problem with lease-option assignments without new paperwork is that the mortgage company wants to see an agreement directly between the seller and buyer, not your assigned agreementYou can also get a real estate license and charge a commission of 6% to do a lease purchase deal, Use a listing agreement for that