But sometimes free can cost you a bundle if you violate local laws, or don't include something that is required in your state.

Selling costs will consume about 50%.  

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If you've never built, I would never build anything as it will take 3x as long, cost 3x as much, and violate 3x as many city ordinances.

Initially wanted to hold forever but with insurance costs rising/property taxes going up/threats of Hurricanes destroying home, considering cashing out.  

Who will write a $70-$100k cash value policy on this building and what should it cost?

It was the most aggravating part and I thought it would cost us our deal.

Extremely high taxes and maintenance costs plagued by huge inventory sitting in the market. 

With a calculation being on a deal by deal basis you'll need to go in depth with costs VS profit with both scenarios and timelines. 

There are also additional costs of operating and maintaining an LLC, like separate bank accounts, annual report filings, tax filings, etc.2.