Grinbaum Joseph
● Active — license status verified against CSLB public data as of November 6, 2026
| CSLB license | #331648 |
|---|---|
| Classifications | B — General Building |
| Office of record | 9857 Owensmouth Ave Chatsworth, CA 91311 Address as listed in the CSLB record — the office of record, not a service-area claim. |
| Phone (CSLB record) | (818) 341-3236 |
| Contractor bond | $25,000 — Ohio Casualty Insurance Company (the) |
| Workers' comp (CSLB record) | Exempt |
| Business type | Sole Owner |
| License issued | February 9, 1977 |
| License expires | April 30, 2027 |
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Data source: CSLB public records as of November 6, 2026. License status can change at any time — verify live at CSLB before signing a contract.