Public CSLB records

National Air Balance Company INC, C-61/D-62 Air and Water Balancing Contractor in Pleasanton, CA

License #348633·Corporation·Pleasanton, Alameda County
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Summary

National Air Balance Company INC operating as a corporation holds an active California contractor license (CSLB #348633), valid through Sep 30, 2026. First issued in 1977, the license has been on the CSLB roster for 49 years. It carries a single CSLB classification: C-61/D-62 — Air and Water Balancing Contractor. Records show an active surety bond on file with Merchants Bonding Company (mutual) and active workers' compensation coverage from Sentinel Insurance Company LTD. The business is based in Pleasanton, in Alameda County, California.

Business Information
Address
6701 Koll Center Parkway,suite 425
Pleasanton, CA 94566
License Details & Classifications
License Number
348633
Issued
Dec 1, 1977
Status
CLEAR
Expires
Sep 30, 2026
Entity
Corporation
Financial & Insurance Coverage
Contractor Bond
Surety
Merchants Bonding Company (mutual)
Bond Number
CA708996
Effective
Jan 1, 2023
Status
Active
Workers' Compensation
Coverage
Workers' Compensation Insurance
Carrier
Sentinel Insurance Company LTD
Policy Number
57WEABK0ZN1
Effective
Oct 1, 2024
Expires
Oct 1, 2026
Verified

This contractor is verified, with no adverse conditions in the current CSLB record.

License StatusActive
Contractor BondOn file
Workers' CompensationActive

An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this

Frequently asked questions
Is National Air Balance Company INC licensed in California?

Yes. National Air Balance Company INC holds California Contractors State License Board license number 348633, which is active and in good standing. The license was first issued on December 1, 1977. It is valid through September 30, 2026.

What does National Air Balance Company INC specialize in?

National Air Balance Company INC is licensed for one CSLB classification: C-61/D-62 Air and Water Balancing Contractor.

Where is National Air Balance Company INC headquartered?

National Air Balance Company INC is headquartered at 6701 Koll Center Parkway,suite 425, Pleasanton, CA 94566, in Alameda County, California.

Does National Air Balance Company INC have an active surety bond on file with CSLB?

Yes. National Air Balance Company INC has an active California contractor surety bond filed with Merchants Bonding Company (mutual).

Does National Air Balance Company INC carry workers' compensation coverage?

Yes. National Air Balance Company INC carries active workers' compensation coverage through Sentinel Insurance Company LTD.

How do I verify National Air Balance Company INC's contractor license?

You can verify National Air Balance Company INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=348633.

Activity Timeline
  1. License issuedDec 1, 1977
  2. Bond activeJan 1, 2023
  3. WC coverage startsOct 1, 2024
  4. License expiresSep 30, 2026
  5. WC expiresOct 1, 2026
California lien & payment resources

Working a California job with National Air Balance Company INC, or chasing an unpaid invoice? These free tools track your mechanics lien deadlines and rights under California Civil Code §§8200–8848.

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