New Construction Capital Gains Question

[Rick Domico]

My wife and I are in the process of building a new home that we originally planned on living in. I purchased a property 2.5 years ago with 1.34 acres, subdivided the land into 3 zones, and renovated and sold the existing home. 

Since the process has taken close to three years, my wife and I are seriously considering relocating to a different state (PA to FL). However, I am concerned about the possible capital gain tax. I've heard several different theories (you can buy a property for $1 more and not have to pay tax and the 1031B exchange). I'm hoping someone can let me know some tax strategies if we were to sell and relocate.

Thank you!