Local investor and realtor here.

I would definitely contact a local civil engineer or environmental engineering firm. 

You can reach out to your local property tax people and they can explain it in more detail.  

I want to throw this out to the community to see if anyone would have some local expertise to know if market conditions should warrant a request for seller credit or break the contract. 

First, go to your local REI meetups.

So I thought of finding investors that would help me buy local rental properties through a 501C3 so they get a deduction and then I can manage it as a charitable contribution or hire another PM and they get a charitable deduction.

Consider your long-term plans and local zoning regulations carefully to make an informed decision.Good luck!

Educate yourself on the local market, network with other investors and agents, and always have a solid plan in place before making any investments.

He's the first to admit he doesn't know everything, but he does know a lot.I like his approach to real estate.He's stayed local and in residential SFR and small MFR, but has diversified with Class A, B & C properties. 

These gatherings provide an invaluable opportunity to connect with like-minded individuals in your local market who can offer firsthand advice and insights to support you on your real estate journey.Similar to the wealth of resources available within the BiggerPockets community, NCREIA offers a multitude of tools and resources to assist you in your endeavors.