Im only going to touch on the cost seg study.

I’m spending more time studying the Cleveland market and would love to connect with investors who are actively buying in the area.

Material costs stabilizing but skilled labor still premium—anyone seeing 30%+ overages from initial contractor bids?

While house hacking, only the rented portion qualifies, so the study benefits are proportionally smaller and the math rarely justifies the cost.

Material costs went up, sure, but you can budget for those.

I agree that 5-year depreciable assets can qualify for bonus depreciation etc - but that stands true independent of needing a cost segregation study to make that allowable. 

I’ve been studying real estate investing and I’m particularly interested in wholesaling.

Id recommend getting comfortable with the terms.Some books that are helpful (not totally MF focused)-Confessions of a Real Estate Entreprenuer (Perspective of an investor, how they think, how they take risks and how they learn)-Am I Being Too Subtle (Mindset, managed risk, opportunity spotting)-Zeckendorf - Autobiography (Relationships, risk taking, deal structure, development)-BP Rental Property InvestingI'd also recommend going to Lowe's, Home Depot, Habitat for Humanity to build your brain around materials, costs, quality and history of materials (even if you're not the one doing the work).Lastly, once you've conceptualized the asset class itself and general understanding of deal structure / operating structure...look into some news articles and trends in MF.

Do case studies.

Sorry about the lack of details, I am thinking of a standard porch for 2u multifamily, cheapest material that can hold up cold, snowy winters and hot humid summers.thank you.