I wanted to get everyone that has done or has a ton of knowledge in the CA space for doing ADUs for the new bill that was passed AB1033 for ADUs.

Enter the bills as they come in, deduct from the deposit, refund the remainder.

You would do better in 30-day t-bills (right now ;-)The hopes an investor might have (if you purchased a property like this) are: 1) inflation to drive rents up, 2) inflation to drive property appreciation, and 3) mortgage rates to drop to refi at a lower rate in a few years.A lot depends on what someone thinks about the longer-term prospects of neighborhood they're investing in.

Are bills like electricity and water something that's figured into weather or not a property is self sustaining?

Bill

I checked twilio billing and I'm running about $120/mo just to pay for the SMS traffic. 

Bill

We have programs that we readily pay your; grocery bill, rent, cell phone, internet, spending money, health insurance, Rx coverage, day care AND to boot not only do you NOT have to pay diddly-squat in income tax's that the rest of us subsidize (pay) for you but we even send you a big fat check each year if you have kids. 

An IRS lien, code violations (weed abatement, grass cutting, boarding windows-doors, and demolition costs), HOA fees, water- sewer bills all go along with the property providing the property has any of these. 

(So you don't help to build up the rest of our medical bills through the medical system of course.)