For example, in my state PA there is an inheritance tax and many TAX auction properties originate from people passing away and the heir(s) not taking control over the estate and paying those property taxes.

I'd start shopping around for terms and building relationships sooner than later. 

The only way to know if your idea is worth doing from a wealth building standpoint is to do the math:  What is the cost to acquire?

A key lesson is to start small and build steadily—don’t rush into big deals before gaining experience.

After two years of occupancy, qualifying for the tax exemption, and benefiting from appreciation, we chose to sell and reinvest the funds.

They can really throw off your numbers if you are not familiar with a citys transfer tax, and fees.

One time when I bought on owner financing, I totally forgot that I didn't have property taxes included in my interest-only payments to the seller. 

Quote from @Joshua Alcantara: Quote from @Peter Walther: I've found many properties with title issues wind up with unpaid property taxes so checking on delinquent taxes, tax deed sales and lands available for taxes might help you identify some.Thanks, Peter, for the info!

We do a different version of BRRR it's Build - Rent - Refinance - Repeat.

Right now I am focusing on building a strong buyers list before I really hit the ground running on marketing for sellers.