@Ivan MiletichGood morning, illl to answer your questions based on what I’ve done and in Los Angeles county might be different for Orange County. 1- the easiest and fastest way to do an ADU all depends on the where your utilities located so attached and detached can both be easy and fast as long as the sewer electrical water and gas are located near by that is going to determine how expensive the project will be the rest is easy.2- All ADU’s need foundation but that’s not too expensive to do if you don’t have foundation. 3- I’m waiting on some blueprints right now for a triplex because of COVID plans are taking longer than usual4- as far as I know yesOther than that I think the most important thing is TIME you need should focus on is starting the ADU process, as far as for me it takes about 2-3 months for blueprints and for the city to issue the permits.

Then they live about 2 more years and it never leak again.

I plan on a minimum down payment of less than 5%.Property management: - 10% of the rental income Utilities (Electric): - Since I will be living in one of the units, I estimate around $80-100 for electric for myself, and the tenants would pay their for their own utilitiesUtilities (Water and Sewer): - $50 a month should cover water and sewer (tenants pay for their utilities)Utilities (Gas): - $50 a month should cover gas (tenants pay for their utilities)Utilities (Garbage): - $60 a month should cover garbage (tenants pay for their utilities)

The definition of a kitchen is a 220v or gas range. 

But we have found the Gas Lamp district and surrounding areas near Petco field attractive.

No, tenants call all the time when things break, a toilet leaks, a dishwasher isn't working, the AC goes out, the list goes on and on. 

In case you didn’t know this but roughly 80% of properties that are being rented have mortgages against them and landlords need to make mortgage payments, insurance payments, property tax payments, pay for water and some electric and gas bills.

They sure like to push efforts to the cliff before they throw the gas on the flame.  

I don't think we will be looking at a wave, certainly not within the next year but maybe instead a slow leak in the hot air balloon as the next year turns into two.

Check the furnace/ac, turn off outdoor faucets, check smoke detectors, check for leaks under sinks, toilets, etc.