I would not say it is a deal breaker but I would speak with the city/county as well as septic contractors to get an idea of the cost (in dollars and time) and use these items to negotiate/renegotiate with the seller.  

The interesting thing is appraisers don't often realize or give huge credit a new plumbing, new electrical, new HVAC despite these items being very expensive.

Doing research on essential services that a PMC must provide and ensuring that all those items are put down in writing is great advice!

Many of those items are desirable by all guests, so I'm not convinced that you have to dial it in to one category at the expense of others.

To help expedite the rental unit approval/inspection, you can also talk with your local housing provider that runs the Sec 8 program what basic items they look for and make sure you have those covered. 

Due to item 1, adding an ADU can require years to start achieving any return (once the accumulated cash flow recovers the initial negative position).4) Adding an ADU is a slow process.

Assessments, in the "condo world" cover items not insured.

Sorry one additional item I hit post too soon...The reason I asked about TIA is because you generally want to get a contractors opinion of cost prior to lease during that negotiating phase so you know how much that TIA covers and what you'll be coming out of pocket for.  

.: I didn’t realize the closing statement items were handled a different way and not included on the SchE.

Given the scope of your work, a simple plumbing leak would not concern me, it's a $200 issue at the most and ideally, it's just another line item when you do rough in plumbing for the kitchen.Being in a Milwaukee suburb, I am guessing it's a 1960s ranch, probably with galvanized plumbing.