They started allowing accessory dwelling units for owner occupants and have been trying to open up more areas for MF. 

Our no-smoking policy includes vaping.

I don't really care if tenants vape or smoke marijuana (since they are unlikely to smoke enough to ruin my paint).

She is not selling accessories, she is renting a home to actual humans.If you are treating your tenants like they are nothing and they don't matter, don't complain when they don't pay or not care about your house at all. 

Hi, Planning to build an ADU (Accessory dwelling unit) in the back, On top of my garage.

Therefore a two or three bedroom property cannot rent more than one bedroom at a time.The rental portion of the residence must be designated as an accessory use space.Must include the registration number in all advertisements.

Single family residence in Los Angeles (built in 1962) has only 1 covered parking spot, and a second cannot be added.Do I have to comply with current parking requirements (2 spots) to add a detached accessory structure for storage etc. 

No. its a SFH with an accessory dwelling unit. 

Torrance currently has zoning code that covers accessory dwelling units (ADUs) that I would like to take advantage of to permit the rec room as a dwelling so that I can live in it and rent out the main house.

As some others have said paint the bathroom with a color that is going to provide some contrast (interest) and then add some accessories for pops of color, add shower curtain, etc.