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B C McCosker Construction INC: CSLB License #636659

Source: CSLB public data · Updated November 1, 2026 · CSLB's record

Active, no issues in CSLB file

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The license is active with no suspension on record, though classifications, bonds and secondary flags still deserve a look.

License details

License number: 636659
Primary status: CLEAR · what this means
Business type: Corporation
Issued: January 25, 1992 (34 years)
Expires: January 31, 2028
Classifications: A General Engineering Contractor
B General Building Contractor
Mailing address: 3911 Laura Alice Way, Concord, CA, 94520
Phone: (925) 686-1780

Workers' compensation

Type: Workers' Compensation Insurance
Insurer: Arch Insurance Company
Policy number: ZAWCI1057501
Effective: April 1, 2026
Expires: April 1, 2027

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Contractor's bond

Surety: Contractors Bonding and Insurance Company
Bond number: C11465
Amount: $25,000
Effective: January 1, 2023

Bond of qualifying individual

CSLB's public file lists no qualifier bond for this license. One isn't required when the qualifier owns at least 10% of the business, and some qualifier bonds appear only on CSLB's record.

Status history

No changes recorded since we began tracking this license on November 1, 2026. We compare every weekly CSLB file and log changes to status, bonds, workers' comp and classifications here.

Data: CSLB Public Data Portal, file dated November 1, 2026. Status can change at any time. Verify on CSLB's Instant License Check. This site is not a consumer reporting agency under the FCRA; don't use it for employment, credit, insurance or housing decisions about an individual.