The New Avengers formed after the Battle of Earth, when Tony died, and Steve got "The life Tony was always telling him to get". Sam Wilson and James "Bucky" Barnes are there new leaders.
Naming a New Leader[]
After the Battle of Earth, Steve Rogers gave Sam Wilson his shield. Steve would later go on to a nursing home, where after, Sam gave Bucky the shield. They both argued over who should have it, but eventually, Bucky was the official owner, and both Sam and Bucky were the leaders/
Finding a New Headquarters[]
It wasn't too hard to find a new one, especially since they were going to honor Tony. The problem was the money they had to spend to buy it. Pepper Stark gave them all the money they needed for the project, the remodel, and the building, so they could.
Honoring Former Members[]
The New Avengers took a great deal of their time to honor former members of the Old Avengers, like Tony, Steve, and Natasha, by painting rooms with their colors, and such.
Honoring Tony[]
The New Avengers made sure that Tony was recognized for his sacrifice. The main floor had tiles that had images of all the original Avengers (Bruce/Hulk, Steve, Clint, Natasha, Thor, Tony) in the center. It wasn't until the second floor, that Tony was really honored. They painted half of it with Tony's colors, and half of it with Steve's colors, knowing that they had both a stable at one point and fragile relationships.
Honoring Natasha[]
The New Avengers dedicated one floor to Natasha. This was the floor with the balcony since that was where she closed the portal to end the Battle of New York.