We Normally put steel posts nearby so no one runs into them.In the third picture one unit is just in front of the picture, then a second unit is at the far end on a post.These can be set off by deep fog, rain or sleet. 

Speaking of whic, rent is due on one of my units today, and I got to log in and check right now.Hope this helps.Leon

Job included inside work of leveling floors, installing flooring, paint walls, kitchen cabinets, etc in both units, as well as lay a new driveway, fence the back yard, provide attic fans, and install electric to the crawlspace to add lights and a sump pump.

(I know a lot of investors who are doing this, but I've been surprised to find out that it's a new concept that others haven't considered.)The more units, the better in this scenario because you can hedge your bets with more units.

In 2022, we also bought a gutted 56-unit apartment complex and fully renovated it in 14 months (over $2.25mm in construction)!

You will definitely need to underprice the unit until you get some reviews. 

The mortgage would stay under the seller's name.The buyer could then rent out the unit, renovate, etc. to increase cash flow or make more money.But aside from a possible "due on clause" being called by the mortgage company, what's the benefit to the seller?

@Pat Aboukhaled I would ULS (unit lot segment) the primary house and include a clause in the call option that would prevent them acquiring the DADU.

Investment Info:Small multi-family (2-4 units) buy & hold investment.

I like small units (they don't trip breakers) and they are cheap.