Key keywords: NBA expansion bids, Las Vegas NBA franchise, Seattle Supersonics return, NBA Board of Governors vote, 2026 NBA expansion, NBA new teams, Las Vegas sports market, Seattle basketball fanbase. The National Basketball Association announced Wednesday that its Board of Governors has unanimously voted to launch a formal exploration process for expansion into Las Vegas, Nevada and Seattle, Washington, moving the league one step closer to growing from 30 to 32 teams as early as the 2026-27 regular season. For Seattle, the move marks a long-awaited step toward the return of professional men’s basketball, 15 years after the former Seattle SuperSonics relocated to Oklahoma City and rebranded as the Thunder in 2008. Local ownership groups, led by a consortium of Seattle-based tech executives and former NBA All-Star and Seattle native Brandon Roy, have already secured funding for the $2.5 billion expansion fee required per new franchise, as well as a fully renovated Climate Pledge Arena, which currently hosts the WNBA’s Seattle Storm and NHL’s Seattle Kraken. Fan demand for the Supersonics’ return remains extremely high, with over 40,000 pre-registered season ticket deposits received as of 2023, even without a formal expansion announcement. Las Vegas, meanwhile, has established itself as one of the fastest-growing professional sports markets in North America over the past decade, already home to the NFL’s Las Vegas Raiders, NHL’s Vegas Golden Knights, and WNBA’s Las Vegas Aces, all of which have posted top-tier attendance and revenue numbers in their respective leagues. The NBA has run its annual Summer League in Las Vegas for 18 consecutive years, drawing sold-out crowds and national broadcast attention annually, giving the league decades of data on local fan engagement and market viability. The leading Las Vegas ownership group, led by Las Vegas Sands Corp. and former NBA player Shaquille O’Neal, has proposed building a new 18,000-seat arena on the Las Vegas Strip specifically for the new NBA franchise. Over the next six months, league officials will conduct on-site visits to both markets, review ownership group financial documents, assess local broadcast partnership potential, and finalize expansion fee terms. If all reviews are completed successfully, the league could hold a formal vote to approve both expansion teams as early as mid-2025. The expansion would require adjustments to the league’s conference alignment, with plans to place one team in the Western Conference and one in the Eastern Conference to create two 16-team conferences, as well as an expansion draft that would allow each new franchise to select unprotected players from existing 30 teams ahead of their inaugural season. League leadership has noted that the two markets were selected as the only candidates for this round of expansion due to their lack of overlapping existing NBA markets, strong local corporate sponsorship bases, and proven fan demand for live sports.