is it on market or off? 

I have about 150k equity in my home and have $215k balance on my mortgage.

The interesting part, this is the income generated from two tiny homes (on wheels) on the property.

If you need more coverage, you can usually increase the liability amount on your current policy.

Make sure if you’re allowed to post it on the door (assuming the tenant doesn’t answer when you knock) and take photos for evidence of the notice posted on the door.

You need to drive short distance on private street and then up ~150’ driveway.  

I'm also in CA (up on the Central Coast).

Debt service on this is $2308/mo which seems really high.

Seller is an investor who sells dozens of properties each year (some of them via fsbo) but ultimately give in and choose to let you list b/c they’re having trouble offloading this particular property OR want to spend their time on something else.

But to answer your question on how to do DD on a wholesaler/ what to ask a wholesaler: You have to do your DD on the property itself.