Instead of jumping into an expensive Long Island market with negative cash flow, consider investing in a Texas market like San Antonio, Houston, or DFW suburbs—these areas offer strong rental demand, lower property taxes than NY, and better cash flow potential.

I completely agree with @Ashish Acharya's points about the cost-effectiveness of a HELOC and the potential credit implications if it’s secured by your primary residence.

If you held the flip for 2 years then sold- then you could potentially do a 1031. 

Strong Potential for Long-Term Capital AppreciationGermany's real estate market has demonstrated a strong track record of capital appreciation.

I would characterize Columbus as some positive cash flow but amazing appreciation potential.

The market is slow currently and you need to check flood zones and assess insurance costs when underwriting a deal.

What methods would you suggest to screen potential tenants? 

Nashville is a fantastic market with strong rental demand and long-term growth potential.

My GC and I are visiting a property at 10 AM tomorrow that we are looking to potentially flip, however my concern is that there is only “street parking”, no driveway.

For a variety of reasons, including keeping this potential project "need-to-know" only right now, I want to get a ballpark estimate with full understanding that the goal posts could move in either direction as the project gets more discrete.