Just remember that the important thing is the high level overview I gave in my first response to your post: its a way for the seller to get cash at closing and defer the capital gains tax and depreciation recapture for 30 years.

It was a fixer-upper and from the description sounded like the kind of house I'd be interested in so I sent an email and text to the contact info listed. 

This wiring is rated to 60C cannot handle the level of heat created my many modern (pre LED) fixtures ... most notably pot lights and halogen fixtures.  

Will not be dating super models at that level but not much of a hassle either. 

It's hard enough as it is to put larger deals and capital together let alone limiting that to the same 10 near-equal partners...and at any level of scale or over extended time periods.I know sponsors who work with small investor databases but it's still clearly a syndication with active and passive roles and equity splits that vary from capital contributions.

The customer service level reflects the difference between indifferent salaried people checking boxes and letting automated software do whatever it wants to do, and folks paid for production (like if you went the refinance route, rather than assumption).

Now they might argue their tenants stay for many years so vacancy is almost nonexistent, but I am skeptical of this kind of thing.Is there any major metro in the country that is not a Detroit or Chicago where 10+ cap on a C level duplex or something is achievable?

You'll likely find quite a lot of info on doing rough estimates on rehab costs based on sqft and general level of rehab. 

Master bedroom had a low points ranging from -0.7" to -3.5""The house has experienced settling of the foundation""It is my opinion that the foundation remains structurally sound and re-leveling is not required at this time.During our inspection of the home we came across the following:Noticeable sloping when walking around.Buckling hardwood floors in the master bedroomCracked and delaminated tile in the master bathroomCracked bricks and mortar joints on the exteriorHome inspector said there is definitely evidence of foundation movementPermapier came out to provide a free estimate and evaluation and suggested multiple piers along master bedroom as well as some other areas of the home. 

I hope to not offend you by dropping the conversation to a more basic level than the other professionals who responded.