You need to be licensed to do property management in Ohio, so I'd really like to know how his "team" is handling property management for all of the countless investors he claims to be working with.

Even if you could it all you're doing is deferring taxes instead of eliminating them. 

Paying very low property taxes.

While the IRS does not mandate a physical site visit, the IRS cost segregation audit technique guide (ATG) does suggest conducting “field inspections.”It’s important to note that the ATG is not an official IRS document.It serves as a guide and cannot be used, cited, or relied upon as an authoritative source.However, the recommendations in the ATG are worth considering.According to the guide: “A field inspection is recommended to document the physical details of the building, type of construction, materials used for construction, the assets contained in the building, the size and types of building systems, and any land improvements that were included in the purchase of the property and the condition of that property at the time of purchase.”So while the IRS does not require a site visit for cost segregation studies, following the guidance from the cost segregation audit technique guide can be beneficial.There's this thing called Hierarchy of Tax Authority that CPAs and Tax Attorney's reference.Let's not get too carried away with comments like, It serves as a guide and cannot be used, cited, or relied upon as an authoritative source....

Opportunity Zones are designated distressed areas where long-term investment and development are encouraged.3 Reasons Why You Should Invest in Opportunity ZonesDefer or Eliminate Capital Gains Tax ObligationsWhen investing in Opportunity Zones through a Qualified Opportunity Fund (QOF), you have the potential to defer your capital gains taxes.

Specifically in SC, though, I would check two things - 1) see if the ATI exemption applies and actually quote the taxes for that particular property on the county tax estimator tool, and 2) get a ballpark quote from your insurance partner on the particular property.

Tax ConsiderationsSTR income is taxed higher than LTR, but deductible expenses (e.g., repairs, furnishings) can offset this.

Is $300 per month net post tax cash flow considered decent?

Low income neighborhood; save on taxes How did you find this deal and how did you negotiate it?

If he get's 500k cash, he's paying 50k in taxes at close.