The NFL already approved the Raiders' decision to relocate from Oakland to Las Vegas. Now, they've approved the Raiders' new stadium lease in Las Vegas.

The NFL's owners signed off on the lease Tuesday, according to Clark County Commission chair Steve Sisolak. 

The Las Vegas Stadium Authority board already unanimously approved the team's lease last week. If the lease hadn't been approved by all parties, the Raiders' move could've been delayed a full year. So, all of the hurdles appeared to have been cleared. 

At the Coliseum in Oakland, the Raiders were frequently on year-to-year leases. That won't be the case in Las Vegas. According to NFL Network's Ian Rapoport, it's a 30-year lease, which also includes option years.

"It was a big step ... a well-done process," Raiders owner Mark Davis said, via Rapoport.

Davis went on to reveal that the Raiders have refunded and resold roughly 1,000 season tickets, according to Tom Pelissero of USA Today. Davis also gave an update on the timing of the Raiders' new $1.9 billion stadium:

As we just saw with the Los Angeles stadium delay, which resulted in some Super Bowl rescheduling, all it takes is a little rain for construction plans to go awry. But, like the Rams and Chargers, the Raiders are planning for the new stadium to open in 2020. In the meantime, they're remaining in the city they're going to eventually abandon, though the idea of using San Antonio as a bridge city has also been floated.

Moving is always tricky. It's especially tricky for NFL franchises. But on Tuesday, the Raiders crossed off an important item on their to-do list.