I have not heard of the IRS challenging, much less overturning a professionally done cost segregation study. 

Are you utilizing any cost segregation studies/real estate professional status to lower the taxable income?

I appreciate everyone's feedback but I am still curious if there are any professional PM's with case studies.

Market Research: Study the local market trends, job growth, and property appreciation to ensure long-term profitability.

There have been studies on this.

(ICF Global Coaching Study (2019): Rates and trends for coaching in high-net-worth areas.)

Can anyone recommend resources for studying or analyzing markets outside of the United States? 

Study the market.

So, your CPA is correct in saying that the insurance proceeds won't be taxable assuming they were used to repair or replace the damaged portion of the property.Cost Segregation Study (CSS): A CSS is a tax planning tool that allows you to accelerate depreciation deductions by identifying and reclassifying certain components of your property as shorter-lived assets.

Requiring xyz% of new housing to be affordable....find me the studies that indicate this will actually lead to housing affordability....eliminating the 10 year tax abatement that unlocked revenues that are 10x what the city of Philadelphia would've collected on many parcels that would never have been developed if not for the 10 year tax abatement etc.....