(This is called a 1031 exchange and you must set it up BEFORE the sale occurs and you must never have access to the money.)Lastly, if you hold an investment property (not a flip) for over a year it becomes a capital gains tax instead of a regular income tax.

Unless, of course, you have moonlighted as a judge or an FTC commissioner and have presided over a case specififically about this precise situation???? 

These things are important so later on you can do a 1031 Exchange if you want to sell and buy something else.

This is a great opportunity to network with seasoned investors and exchange thoughts.Participate in online networks and forums where investors exchange opportunities, experiences, and advice by joining BiggerPockets, local Facebook groups, or LinkedIn communities.Look into joining investing or real estate associations in your area.

Brokers relinquish control in exchange for "knowing all the lenders so they can get you the best rate".

It's called the IDX data exchange.

Also, in PR, having a local facilitate that exchange - who knows the environment, smooths the way so much more.

Most accountants will be comfortable with an exchange on a property that you've owned 1 year and change. 

@Josh Garcia, it is possible to 1031 exchange out of a property that you've built and reinvest into another construction project.  

The IRS allows 1031 Exchanges to defer taxes on what they consider to be capital assets.