Graton Resort and Casino Celebrates $1 Billion Expansion Opening in Sonoma County
The Graton Resort and Casino in Rohnert Park welcomed visitors to its $1 billion expansion beginning May 4 2026 and the project introduced several new elements that expand the property's footprint while updating guest amenities across Sonoma County. The development includes a dedicated smoke-free wing along with additional dining and visual attractions that opened to the public on that Monday in early May.
Construction on the expansion wrapped up ahead of the scheduled debut and the property now features more than 200,000 square feet of additional gaming and leisure space integrated into the existing resort layout. Officials from the Federated Indians of Graton Rancheria which owns and operates the casino confirmed the timeline and noted that the project represents the largest single investment in the property since its original opening more than a decade earlier.
New Amenities Highlight the Expansion
One prominent addition is the 28,000-square-foot AYA restaurant which sources ingredients from local farms throughout Sonoma County and neighboring regions. The dining venue offers seating for several hundred guests and operates as a full-service establishment with an emphasis on regional produce and proteins. Adjacent to the restaurant stands an illuminated water feature that serves as a central gathering point during evening hours and uses energy-efficient lighting to create dynamic displays visible from multiple vantage points on the property.
The new smoke-free wing provides a separate gaming and hospitality area that accommodates players who prefer environments without tobacco smoke. This section connects directly to the main casino floor yet maintains independent ventilation and access points designed to keep air quality distinct from other parts of the resort. Construction crews completed the wing as part of the overall $1 billion budget which also covered infrastructure upgrades including parking expansions and landscaping improvements around the water feature.
Red-Carpet Celebration Draws Attention on May 8
Four days after the public opening a formal red-carpet event took place on May 8 2026 to mark the expansion milestone. The gathering brought together athletes entertainers and elected officials who toured the new facilities and participated in ceremonial activities. Among those in attendance were former San Francisco Giants player Hunter Pence recording artist E-40 actor Mario Lopez and model Carmen Electra each of whom appeared on the carpet and posed for photographs with resort representatives.
Former San Francisco Mayor London Breed and California Lt. Gov. Eleni Kounalakis also joined the event and offered remarks during a brief program that highlighted the economic contributions of the expansion to Rohnert Park and the broader Sonoma County area. The celebration included a private dinner inside the new AYA restaurant followed by a reception around the illuminated water feature where guests viewed the lighting sequences that activate after sunset.
Event organizers coordinated with local law enforcement and transportation services to manage crowds and traffic around the resort throughout the evening. Media outlets received access to designated areas along the carpet and several outlets broadcast live segments from the property capturing arrivals and short interviews with the celebrity guests. The occasion concluded with a fireworks display over the water feature that lasted approximately ten minutes and drew spectators from nearby roadways.
Project Context and Timeline
Planning for the expansion began several years before the May 2026 opening and the Federated Indians of Graton Rancheria secured necessary permits from Sonoma County and state regulatory bodies during that process. The $1 billion investment covers not only the visible additions such as the smoke-free wing and AYA restaurant but also behind-the-scenes improvements to utilities and security systems throughout the enlarged facility.
Resort management released phased updates during construction that kept the public informed about progress and the final completion aligned with the announced May 4 date. Guests who visited on opening day encountered the new amenities alongside existing gaming floors and hotel towers creating an expanded experience that integrates older and newer sections seamlessly.
Attendance figures released shortly after the debut indicated strong initial turnout with the smoke-free wing and water feature drawing particular interest from returning visitors. The AYA restaurant accepted reservations starting the first week of operations and quickly filled evening slots as word spread about its farm-sourced menu selections.
Conclusion
The May 2026 expansion at Graton Resort and Casino adds measurable capacity and new amenities to the Rohnert Park property while the accompanying red-carpet celebration on May 8 brought together public figures and resort leadership. The smoke-free wing the AYA restaurant and the illuminated water feature now form part of the daily operations and continue to serve guests who arrive at the Sonoma County destination. Further details about ongoing events and facility access remain available through the resort's official channels and local news outlets.