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Kornerstone Construction
OK to hire? Yes, with caution
- Exempt from workers' comp (no employees). If they bring a crew, ask why.
- Brand-new license (issued 10/09/2026). Ask for references.
License details
| Issued | 10/09/2026 |
|---|---|
| Expires | 10/31/2028 |
| Classifications | B · General Building |
| Address | 1694 East Yale Street, Ontario, CA 91764 |
| Phone | (909) 774 6660 |
| Languages | Not reported yet |
Contractor's bond
| Surety | American Contractors Indemnity Company |
|---|---|
| Amount | $25,000 |
| Effective | 06/08/2026 |
| Cancellation date | — |
Workers' comp
| Coverage | Exempt |
|---|---|
| Insurer | — |
| Policy | 05/15/2026 – — |