Corveting Master Bedroom to ADU

[John Philip Eugenio]

Good afternoon BP, 

My wife and I just bought our 3rd property in California and we currently occupy the house. The garage was coverted to a Master Bedroom (permitted). Now, we want convert the master bedroom to ADU. This BR already have a large walking closet and bathroom. Basically, i think all i need to close the door the Bedroom to the kitchen area, add an exterior door, add kitchenette, and possibly add its own electric panel. Has anyone ever converted a master bedroom? How was the permit process? Any recommendation how to make this happen? The house is located in San Diego.

Background of the house: the house 4 bedrooms and 2 bathrooms. Adding ADU will have 2 rentals properties 3/1 and 1/1. Doing so, i will make close breakeven with my current mortgage. As you know, it is really hard to have possive income immediately. We need this house rented to lower our DTI.

We want to buy small MTF in the future to househack in CA using low downpayment maybe FHA loan.

Thank you in advance