Projects including an additional hotel wing and expanded casino floor are slated for future development. A new parking structure with solar panels will begin construction tomorrow. Graton Resort & Casino, the Bay Area’s premier gaming destination, hosted a groundbreaking ceremony today to celebrate the expansion of the Rohnert Park resort. New construction begins on parking structure and will eventually include additional casino and resort buildings. Press Releases / Graton Resort & Casino Breaks Ground on $1 Billion Expansion