I am on the other side of the equation with being attached and wanting them to perform as promised and sell the property.

Not sure what proportion of rent $400 equates to, but in California, you can legally increase rent by as much as 10% with just a 30 day notice.

You migjt find you actually enjoy flipping, or being a landlord, or like me, doing a little of everything which I equate to helping families.

The average usage was 6.41 ccf which equates to close to 4800 gallons per day.

but lets bring some humanity into the equation here.. any one that would even think or want to sue.. well that to me is about as well i wont say but you know my thoughts.. pretty low brow.

So if you factor that into the equation (plus the interest u pay on the mortgage and the hit to your cashflow from monthly payments) and the HELOC jumps to 7-10%, which way do you come out ahead?

Now that I am on the investor side of the equation I want to make sure that I am foreseeing any obstacles that may come down the pike.

I love it because it equates to $812.50 a month instead of $750. 

The DP artificially inflates cash flow therefor it must be remove from the equation to separate cash flow generated by the property from that purchased with their cash. 

., is there some special quadratic equation that I need to have handy to be able to calculate APR, interests, etc. how do I figure out how much to charge for rent, things like that...