when was the one world trade center completed

One World Trade Center was completed and opened to tenants on November 3, 2014.

Quick Scoop

• Construction started: April 27, 2006.

• Structural topping out (spire finished): May 10, 2013.

• Official completion / opening to tenants: November 3, 2014.

• Observatory opening to the public: May 29, 2015.

So, if you’re asking “when was the One World Trade Center completed,” the commonly cited completion date is November 3, 2014, when the building opened to tenants and the main construction was finished.