They are designed particularly with mother-in-law or next generational living in mind.

Sometimes, there is also a tenant already in place which means you can start generating rental income from day one.

If you're going to reinvest the proceeds you might want to consider a 1031 exchange or a cash out refi to generate the investment funds you desire for your next project.

-Cons: On sale of property, the new owner would have to start from scratch on the income generation.

They just generate chlorine at a constant rate depending on the system setting.  

Even before only every 5th deal or so would truly allow to recycle all cash and generate 25% equity. 

That’s why I only advertise on Facebook.When you create an ad for Facebook, in the VERY beginning where you choose the type of ad you want to run(you want to run an ad for “Lead Generation” or “Lead Form”), at the top of the screen somewhere, Facebook will ask you if this ad will be for housing, credit, or something else.

I can certainly tell you in SoCal if you had a single family home with an ADU that generates an extra $2k per month in income, end-user buyers will not be thinking "I'd pay an extra $20k for that." 

I am sure there aren't many comps that this would generate.

I have no w2 job, a lot of toys (need to get a plane), can do what I want, can assist my son to find his way in life (he is leading his 2nd rehab) and if I wanted I have generational wealth (I have given away a lot money the last few years).