Your best bet may be to find a ship modeler's club in your area.
I Googled clubs near you and FWIW AI spit out the following.
1. Sacramento Model Shipwrights
- Where: Elk Grove Regional Park, Elk Grove, CA
- Distance from Brentwood: About 70 miles north (approx. 1 hour 10 minutes drive).
- What they do: An active radio-control (R/C) club. Members build military and civilian ships powered by electric motors, steam, or sail. They meet regularly to sail and share techniques.
- More info: Follow them on the Sacramento Model Shipwrights Facebook Group.
2. South Bay Model Shipwrights
- Where: Game Kastle, 1350 Coleman Ave, Santa Clara, CA
- Distance from Brentwood: About 65 miles southwest (approx. 1 hour 15 minutes drive).
- What they do: A highly collaborative club for anyone building ships from kits or scratch-built materials. They focus on sharing building techniques and socializing.
- More info: Visit the South Bay Model Shipwrights website.
3. Hyde Street Pier Model Shipwrights
- Where: San Francisco Maritime National Historic Park, San Francisco, CA
- Distance from Brentwood: About 65 miles west (approx. 1 hour 15 minutes drive).
- What they do: A group of history-minded ship modelers. They hold annual gatherings, and many still do their individual building work while waiting to re-establish their full workshop at the park.
- More info: Check updates on the Hyde Street Pier Model Shipwrights website.
4. Mare Island Ship Modelers
- Where: Vallejo Naval and Historical Museum, 734 Marin Street, Vallejo, CA
- Distance from Brentwood: About 55 miles northwest (approx. 1 hour drive).
- What they do: A smaller, dedicated regional group focused mainly on wooden sailing ships, as well as paper and plastic boats. They meet quarterly for inspiration and to solve building challenges.