Renting Property to SOFA checklist

I'm considering purchasing a property to rent out to the US military population here in Okinawa.

Firstly full disclosure I'm a non-SOFA, non-US citizen, European foreigner with permanent residency to stay in Japan.

But whilst browsing online for my own future home, I found a property that is currently being rented out, at a monthly rate that I assume to suggest a SOFA tenant…

Is there an online document of the checklist that any potential property needs to meet before becoming "approved" for SOFA tenants?

Also, is there a schedule of how often the inspection needs to be carried out? (every change of tenant? / every xx years?)

And is there a building age limit?

I've seen a subreddit before that suggests going to building X on base Y to pickup the documentation, but without base access that would be tricky… Surely most buildings rented out to SOFA members are owned by Japanese citizens, also without base access like me…