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Independent Verification Report

Third-party report by SiteVetter. Not affiliated with Mai Yao Guo. View official CSLB record

Mai Yao Guo

Active
CSLB #1006614SAN LEANDRO, CASole Owner
75/100

Safety Score

C - Fair

1 risk factor detected

Risk Factors

Workers' Comp status unknown
Active license
10+ years in business

+2 more verified in full report

Based on CSLB, SAM.gov, OSHA, DOL, EPA, and permit records

This sub has 1 risk factor. Track whether they get resolved.

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Active License - Additional Findings

MAI YAO GUO holds an active California contractor license, but our verification found additional items found that warrant review. Get the full report to see insurance status, bonding details, and federal compliance records.

1 permit

License & Compliance

License Information

Issue Date
Aug 20, 2015
License Expires
Aug 31, 2027
Classifications
Glazing (C17)
View on CSLB.ca.gov

Bond & Workers' Comp

Contractor Bond

$25,000 Bond

RLI INSURANCE COMPANY

Workers' Compensation

Unknown
WC status unknown

Not on file with CSLB — verify directly

CSLB data as of Aug 01, 2025

Permit History

1 permit

Works primarily in: San Francisco

1 permit total|1 verified
2024
Typical project: $10K-$10K(median $10K)

Permit valuations are contractor estimates

100% OTC Alterations

Last update: 16 months ago

Verified Permits

Verified
1 permit|San Francisco
DateTypeCityStatus
Sep 2024otc alterations permitSan FranciscoFinaled

SAM.gov Exclusions

SAM.gov federal exclusion database checked for MAI YAO GUO. Verified as of February 2026.

Database checked

Federal debarment and exclusion records

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DOL Wage Data

Department of Labor (DOL) wage and hour records reviewed for MAI YAO GUO. Verified as of February 2026.

Database checked

Fair Labor Standards Act violations

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OSHA Safety

OSHA workplace safety records checked for MAI YAO GUO. Verified as of February 2026.

Database checked - no citations

Inspection history reviewed

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EPA ECHO

EPA ECHO environmental compliance database checked for MAI YAO GUO. Verified as of February 2026.

Database checked

Environmental compliance records

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Data sourced from federal databases. Full results available in the complete report.

Personnel

1 person on file

Officers, RMEs, and qualifying individuals

→ Names, titles, and license associations

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What's Included in the Full Report

Bond amount & expiration date
Workers' comp policy # & dates
Complete personnel list & titles
Federal violation details & amounts
Timestamped PDF for compliance file
Get Full Report

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Data sourced from California Contractors State License Board (CSLB) and federal databases. Information is provided for reference only. Verify directly with CSLB for official status. Last updated: Feb 17, 2026. Learn how to verify a contractor

1 item flagged — details in report

WC issue