Graton Resort Casino Enters Vertical Construction Phase for Billion Dollar Expansion

The Graton Resort & Casino in California has moved into a two year phase of major vertical construction, advancing a one billion dollar multi year expansion that will add new hotel space, entertainment facilities and increased gaming capacity, while the project timeline extends through 2028 according to updates released in August 2026.

Key Elements of the Expansion Project

Construction crews have begun work on a 240 room hotel tower that includes an adults only pool deck along with expanded suites, and this structure forms the centerpiece of the current vertical phase, whereas additional elements such as a large format entertainment venue designed for concerts and shows will follow as part of the overall buildout, while current slot machine counts stand at just over three thousand with a long term target reaching up to six thousand machines.

Observers note that the non smoking casino wing, which opened in May 2024, continues to operate as the foundation for these upgrades, and further changes including a relocated poker room, high limit gaming areas and parking garage improvements remain scheduled through the 2026 to 2028 period.

Timeline and Construction Progress

Project records show that vertical construction activities started in mid 2026 after earlier site preparation, and the two year window for this phase aligns with broader milestones that include structural completion of the hotel tower by late 2027 followed by interior fit out and opening preparations, while parallel work on the entertainment venue and gaming expansions proceeds on separate schedules to minimize disruption to existing operations.

Data from the construction update indicates that parking garage upgrades have already advanced in stages, providing additional capacity for visitors during the build period, and the relocated poker room plus high limit areas will integrate with the non smoking wing to create distinct gaming zones that address different player preferences.

Gaming Capacity Growth and Venue Additions

Current slot totals exceed three thousand machines, yet the long term plan targets an increase to six thousand, and this growth will occur alongside the addition of the large format entertainment venue that can host concerts and shows, thereby expanding the resort beyond traditional gaming into broader leisure offerings, while the adults only pool deck on the hotel tower adds a specialized amenity for guests seeking dedicated spaces.

Those tracking the project report that expanded suites within the new tower will offer increased variety in room types, complementing the existing property and supporting higher occupancy rates once complete, and the overall one billion dollar investment reflects coordinated efforts across multiple contractors and suppliers working under phased timelines.

Background on Recent Developments

The non smoking wing opening in May 2024 marked an earlier milestone that improved air quality options for players, and it now serves as the operational base during the vertical construction phase, whereas ongoing elements such as the poker room relocation and high limit gaming additions will roll out incrementally to maintain service continuity through 2028.

Industry reports from sources including 500 Nations construction updates detail these steps, and similar projects at other California properties have followed comparable patterns of phased vertical builds that allow resorts to grow while remaining open to the public.

Conclusion

The Graton Resort & Casino expansion continues on schedule with the two year vertical construction phase now underway, incorporating the 240 room hotel tower, entertainment venue, gaming increases and supporting infrastructure upgrades that extend through 2028, and these developments build directly on the non smoking wing opened in 2024 to create an integrated resort environment with expanded capacity and amenities.