CA #427183 Active

Cornerstone Construction Co

Diamond Bar, CA

Business Information

Address
1860 S Tintah Drive, Diamond Bar, CA 91765
Phone
(909) 861 7978
Type
Sole Owner

License Status

Status
Active
Issued
Aug 26, 1982
Expires
Aug 31, 2028
Classifications
B General Building Contractor C-9 Drywall

Workers Compensation

Coverage
Exempt
Effective
Aug 20, 2026

Contractor's Bond

Bond #
800273704
Amount
$25,000
Effective
Sep 1, 2026
Surety
Atlantic Specialty Insurance Company

License History

License reinstated

Sep 14, 2026

Primary Status: Contr Bond Susp CLEAR

Contractor's bond reinstated

Sep 14, 2026

Contractor's Bond Cancellation Date: 2026-09-01 cleared

Contractor's bond renewed

Sep 14, 2026
Contractor's Bond Number
30044171 → 800273704
Contractor's Bond Effective Date
2023-01-01 → 2026-09-01
Contractor's Bond Surety Company
HUDSON INSURANCE COMPANY → ATLANTIC SPECIALTY INSURANCE COMPANY

Suspended — Contractor's Bond

Sep 4, 2026

Primary Status: CLEAR Contr Bond Susp

License renewed

Aug 28, 2026

Expiration Date: 2026-08-31 2028-08-31

Workers Comp Effective Date: 2024-08-05 2026-08-20

Renewal received

Aug 26, 2026
Secondary Status
Renewal Recived

License data updated

Jul 18, 2026
Contractor's Bond Cancellation Date
2026-09-01

License renewed

Aug 9, 2024

Expiration Date: 2024-08-31 2026-08-31

Workers Comp Effective Date: 2022-08-19 2024-08-05

Renewal received

Aug 7, 2024
Secondary Status
Renewal Recived

License issued

Aug 26, 1982