| Office | Contact | Phone |
| Main Office Plasterer's & Cement Masons Local 300 | Steven Scott | (650) 343-5671 |
| Fresno, Area 188 (Plasterer's & Cement Masons) | Gary Clark | (559) 251-8259 |
| Modesto, Area 429 (Plasterer's & Cement Masons) | Lucille Palmer Byrd | (209) 524-0614 |
| Monterey, Salinas & Santa Cruz, Area 337 (Plasterer's & Cement Masons) | Jose Mendez | (831) 883-0186 |
| Oakland, Area 594 (Cement Masons) | Keith Shanks | (510) 430-9492 |
| Pittsburg, Area 825 (Cement Masons) | Leslie Trapps | (925) 432-0194 |
| Sacramento, Area 295 (Plasterer's) | Henry Jimenez | (916) 371-7640 |
| San Francisco, Area 580 (Cement Masons) | George Brown | (415) 468-4411 |
| San Jose, Area 224 (Plasterer's) | Ignacio Garcia | (408) 264-4430 |
| San Mateo, Area 583 (Cement Masons) | Pat Barrett | (650) 343-5671 |
| Marin, San Rafael, Sonoma, Marin Co., Eureka Area 355 (Plasterer's & Cement Masons) | George Cunningham | (707) 577-0144 |
| Work Compliance/Organization | Ed Dicochea | (209) 552-8983 |
Important links to other
organizations
National Office of Operative Plasterers' and
Cement Masons
California Labor Federation AFL-CIO
Cement Masons Trust Funds of No. CA