River Islands Is A Master Planned Community Along The San Joaquin River.

Our almost 5,000 acre community has been planned to bring together all of the best elements of the relaxed Delta lifestyle with a vision that is decidedly green, healthy, high tech and in harmony with nature.

We have envisioned a community comprised of architecturally-distinctive neighborhoods built by some of California’s most outstanding home builders. Schools that are in step with advanced curricula and state-of-the-art learning devices. A 350 acre business campus designed for research, campus uses and headquarters space. A beautifully-detailed downtown retail area, with businesses, shops and dining. Acres and acres of parks, playing fields, lake recreation and nearby access to the Delta. All connected to the Tri-Valley, BART and Silicon Valley by ACE Train.

River Islands Is A Place To Live, Work, Learn, Play And Most Of All—A Place To Belong.

Our Master Plan Includes:

  • Approximately 4,905 total acres
  • Approximately 11,000 residences to be built over the next 20+ .years
  • Nine schools planned within the community
  • Acres of parks, playing fields, green spaces and picnic areas
  • Neighborhood lakes for non-motorized boats
  • 18 miles of riverfront trails for bicycling and pedestrian use
  • 11 miles of lakefront access
  • Nearby access to hundreds of miles of Delta waterways
  • State-of-the-art business campus, now in planning
  • Downtown retail, now being designed
  • Served by the Altamont Commuter Express (ACE) Train, with connections to BART
  • Convenient to I-5, I-205, I-580 and Hwy 99

Master plan map

Click to enlarge


River Islands is at the forefront of bringing new technology home, from water recycling to advances in solar energy usage. Vehicle charging stations are already in place at the Welcome Center, so come plug in while you’re visiting! HEAR ABOUT ADVANCES IN

Super Levee

The River Islands flood control program is unprecedented. Specially constructed 300-foot wide “super levees” create a high ground perimeter at the river’s edge, providing a 200 year level of protection for the first 900 acres of the development and constitutes the flood protection plan for the balance of the project.

see close up


Stay up to date with our plans for River Islands through our monthly newsletter, The Currents. Thank you!