I personally own investment properties in Columbus, Ohio. 

@Polat Caglayan The majority of investors who become involved in the section 8 program do so because they purchase lousy real estate and leasing the units to section 8 tenants is the best option on the table.

You could use an LLC, Trust, personal name, etc. 

Purchase price: $123,000 Cash invested: $15,000 This was my first personal real estate transaction.

If someone injures themselves and sues, they will sue the LLC, not you personally.

Check out this table: https://www.municode.com/library/ca/oakland/codes/...This is what you're looking for: https://www.screencast.com/t/Xkyp3OZWkI Oakland, for a building with 3 units or more you need to have a lot sized at 7,500 sq ft.  --- From the zoning code it says, an RM-2 zoned lot can have "1 unit per 2,500 sf. of lot area"If you don't meet that lot size requirement you'll need to make a request for a variance, then post notice about the desired change in front of the building.

I will be renting ADU fulltime and will not use for personal usage.

Everything in tax depends on the personal situation. 

We also have relatively low expenses (personal expenses, mortgage/escrow on other rental property, and escrow on current property) that are around ~$120k/year.

They have installers as well.Take a look at Engineered Wood floors since this is your personal residence.