As far as the Tech Stack goes, a common mistake is not considering what future tech you want to use, then you're stuck with things that don't integrate (API out) to it, and you get really limited in future options. 

As far as selling to the tenant goes, make sure you don't give any rent credits towards it. 

As far as the record goes, you can search the County Recorder for death certificates.

That's why attending the inspection is so useful for a new buyer or at least sending the buyer's agent to attend. 3.

I know that there is so much still to learn!

When you mail postcards, you short-target only those homes you like and you write something different depending on where it is so you can connect.

Eventually I want to have a go to foundation contractor as well given the fact foundation repair is so common in our area as homes age.

@Anna Antipkina fair game as far as I know!

Now its the reverse, their equity is so high, the rents cannot approach their value.

As far as occupancy, HUD has a Keating memo on reasonable space, our local apt association suggested for some guidance on how many could reasonably fit in a space (not just looking at bedrooms).