Thanks for all the replies and pms.
Property is in the central valley, main house exists (2200 sq ft.) has no fire suppression (adu t/f does not need), main house has solar and we will add a full array on the adu - I am fine with overbuilding solar with batteries and natural gas backup on main house as it's only a matter of time before the PG&E grid collapses. Electric hybrid water heater (they sell them at Loews), electrical tie in from main house panel, sanitary connection along the main house line. Property is big enough, I have already met in person with the municipality and gone over their free plans and decided to create our own. I do not have plans, hence the posts here to have plans created.