Add replacing or fixing a toilet, lawn care, sometimes even insurance and it seems to be most costs would be a higher percent the lower the rental amount. 

Could someone provide examples of what mild vs extreme due diligence would look like with a 4 unit house that requires a moderate amount of TLC from the landscaping to the plumbing and electrical?

You will still have taxes, insurance, possibly property management, and vacancies to account for. 

In one of my units I had it and I couldn't get the property insured until it was removed and replaced. 

I have been in the insurance business (claims department) for the past 16 years and have always been interested in real estate but never had the nerve to pursue it further...I am confident today is the 1st step towards my pursuit of being a full time investor one day.  

While the sale was still in attorney review, the attorneys for the auction house tried to impose a contract with all kinds of odd exceptions and carve outs that they insisted the buyer accept on the title insurance. 

I believe I can ask for higher rent and deposit, but wondering if the risks are worth the added income.I'm reaching out to my insurance carrier to understand if my coverage needs to change. 

Hi @Janice Delantes,If you wanted help to see if this is a good deal, we will need more information like the monthly taxes, insurance, maintenance, vacancy, etc. 

Keep in mind  Jacksonville is a different scale of magnitude than other cities.   5,980 Roof  2,350 Siding repair2,950 Ext paint 350 Screen replacement 180 Window screen600 Hot water heater 500 Appliances used 135 lights 450 Bathroom repair2340 floor 1800 floor 1300 carpet in bedroom 375 electric150 smoke detectors350 Ceiling repair 250 Touch up paint 200 Misc caulk 100 sink 125 garage fix 375 plumbing repair 175 Window    21,315 total 

I was wondering if others are charging "additional rent" ie having the tenant pay a portion of taxes and insurance beyond his rent payment.