Once those are complete, rough plumbing, electrical and mechanicals can be started (rough plumbing should go first, then mechanicals as these are the larger sized items and rough electrical is easier to work around them than vice versa.

I'm in the Reno, NV area and while it's not a high fire risk in many areas insurance companies are looking very closely at the mechanicals of buildings before insuring properties or before writing a policy.

I think podcasts are a great vetting mechanism.

The most likely scenario is that you refuse to pay him, or make him an offer he doesn’t accept, and he files a mechanics lien on the property. 

@Renee Ren before you make any investment via Fundrise or any other crowdfunding marketplace, please carefully review the liquidity mechanisms as described in the offering documents and consult an experienced securities attorney if there is any ambiguity.

Interior from mechanicals, windows, etc will be all new.

Her tenant payment comes from a government entity and is $2100 per month. the house was also recently renovated so all the mechanicals are in good shape. 

It is a mechanism towards retirement. 

Quote from @Scott Meech: Do you the mechanics of having an MTR?

This is because it was poorly converted, improperly done, "patched up" over time, and might have mixed up mechanicals etc.