The company explained that the units are 'fully rehabbed' and shouldn't incur much maintenance cost but holding for a long period of time does entail costly repairs like roofs, termites, etc and those numbers seem awfully low for a SFH right?

I don't see a budgeting for capex, and I would like to know what "misc labor" entails, but I like it so far.

I'm not sure what an "official offer" entails.

I still assert that FHA is the way to go for a 4 plex specifically since conventional will not allow you to buy a 4 plex for less than 25% down even if its owner occupied.  

I'm rehabbing my first investment property in that particular city, and am curious as to what it entails.

What that entailed was to call all the apartments/properties of like kind adjacent to your property to compare/contrast the attributes/amenities they had in comparison to what you were offering at your property.

What that entails depends on how it is run now.

Marcia, one thing about your tenant asserting the new pet would be for "emotional support"  is whether the tenant will acquire the puppy, then apply to have it classified as a service animal for "emotional support."

What it all entails, liabilities, etc.

The company can deny any claim you make based on the assertion that it was a pre-existing problem.