Definitely thinking Single family with an accessory dwelling unit may be an option though 

@Jason MeadowsThey’re legally called ADU Accessory Dwelling Units, and while it seems easy you can buy or build a tiny house and drop it there and rent it, you’ll need to go through the ADU permitting process (setbacks will be the issue), and the biggest expense of construction is getting water, sewer and power out to it.

So back in 2018 i purchased a SFR with an attached Accessory Dwelling unit that had been approved and built back in 2012.

@Gitit Hefetz, Another colleague on BP recommended I check out this website, when I too, asked about ADUs (Accessory Dwelling Units): https://maxablespace.com/Like what DJ said above - because of the housing shortage, the government has been a lot more lenient and has actually been pushing for the creation of these detached or attached ADUs in properties.

We turned the unfinished space into a $2,300/mo income generating 2br accessory dwelling unit!

Hello Las Vegas landlords. I'm starting to install some ADUs on flips on some local properties. I am looking for anyone with experience. If you have had one installed or thinking about it I would love to hear how its ...

Hi,My friend is building an ADU (accessory dwelling unit) in their backyard in Los Angeles area and wondered what might be some good choices for a front door that is 3 ft-0 in wide, 6 ft-8 in high, and 1 3/4 inch thick?

If you're worried about a potential market crash, I would advise making the leap a little bit easier by doing a owner occupied with an accessory apartment.

If you do solar, consider using that electricity for your house and having the accessory unit on regular power as the tenant will pay for that. 

California allows creating a JADU (junior accessory dwelling unit) up to 500sf carved out of the existing house and a separate ADU up to 1200sf that can be a garage conversion.