Some items that are unclear: 1) how much did you spend on the ADU permitting/enhancements?

Adding new service for the 12 can lights, garage door motor, AC Condenser, furnace, kitchen appliances (5), and a washer and dryer circuit, hanging three ceiling fans, three exterior floods in existing locations, two porch lights, one light bar in the bathroom and finally switching out all existing plugs and switches.

@Vernell D Watson - I do have a spreadsheet that I developed before I discovered the BP calculators and continuously enhanced for the past 6 years.

Ya be careful with innovation as well.Toyota now developing battery a battery that can last 1,000 miles.When it's commercialized Tesla is wiped out if they can't enhance their product.And the job loss would be significant enough LOL

For any cons, are there risk mitigating factors and enhanced screening criteria that help?

.- $1050 to replace a 40-gallon hot water heater (in the attic).Last year:$ 450 to replace fan motor and capacitor in Condensing unit outside.How do I know if those are fair costs?  

Been working on enhancements to incorporate housing shortage (population/housing supply ratios), though the above indirectly reflects that. 

Hi my name Sandra R and I am new to the BP and upgraded to Pro to further enhance my knowledge on REI.

San Francisco appears to have them as well, although I'm uncertain if they're constructed differently.That is unfortunate about the high operating costs of those buildings as I am sure they are beautiful and it enhances the neighborhood to have them maintained and occupied.  

Picking their brain and learning the ropes will only further enhance your growth.