Good news is our land is where all of the next-door houses are (free houses, I think legal issues). 

I've had dozens of them in my garage.

It is usually much easier to seal a existing door way then it is to move walls in my experience. 

Typically they have a side entrance that leads to the basement which can be easily split up with a door/wall.

that we’ve learned in our 24 years, managing almost 700 doors across the Metro Detroit area, including almost 100 S8 leases.

He had a client who was debating between buying a small apartment building in L.A. or spreading out capital on multiple units in Phoenix.. after running the numbers with a dedicated local realtro who actually drove around neighborhoods, he opted for Phoenix because he could get more doors for the same cost.

We also own the building next door so idea would be to relocate the tenants to that building after building it out.  

What screens do you do, or not do?

Growing a portfolio by X doors per year isn't always a good strategy.

Some quick background I have a growing portfolio of 19 doors, I am a full-time property manager and have a side gig as an REA.