Chung Yun Su
● Active — license status verified against CSLB public data as of November 6, 2026
| CSLB license | #1120310 |
|---|---|
| Classifications | A — General Engineering |
| Office of record | 20375 Portside Dr Walnut, CA 91789 Address as listed in the CSLB record — the office of record, not a service-area claim. |
| Phone (CSLB record) | (714) 313-0909 |
| Contractor bond | $25,000 — Merchants Bonding Company (mutual) |
| Workers' comp (CSLB record) | Exempt |
| Business type | Sole Owner |
| License issued | May 3, 2024 |
| License expires | May 31, 2028 |
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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.