Timmerman Engineering Construction, A General Engineering Contractor in Walnut Creek, CA
Timmerman Engineering Construction operating as a sole owner holds an active California contractor license (CSLB #561795), valid through Sep 30, 2027. First issued in 1989, the license has been on the CSLB roster for 37 years. It carries a single CSLB classification: A — General Engineering Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and an exempt workers' compensation status (no employees on payroll). The business is based in Walnut Creek, in Contra Costa County, California.
- License Number
- 561795
- Issued
- Mar 24, 1989
- Status
- CLEAR
- Expires
- Sep 30, 2027
- Entity
- Sole Owner
- Surety
- American Contractors Indemnity Company
- Bond Number
- 137226
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Aug 9, 2025
- Expires
- —
This contractor warrants a closer look before contracting:
- Workers' comp listed as exempt
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Timmerman Engineering Construction licensed in California?
Yes. Timmerman Engineering Construction holds California Contractors State License Board license number 561795, which is active and in good standing. The license was first issued on March 24, 1989. It is valid through September 30, 2027.
What does Timmerman Engineering Construction specialize in?
Timmerman Engineering Construction is licensed for one CSLB classification: A General Engineering Contractor.
Where is Timmerman Engineering Construction headquartered?
Timmerman Engineering Construction is headquartered at 900 Chantilly Ct, Walnut Creek, CA 94598, in Contra Costa County, California.
Does Timmerman Engineering Construction have an active surety bond on file with CSLB?
Yes. Timmerman Engineering Construction has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Timmerman Engineering Construction carry workers' compensation coverage?
Timmerman Engineering Construction reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Timmerman Engineering Construction's contractor license?
You can verify Timmerman Engineering Construction's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=561795.
- License issuedMar 24, 1989
- Bond activeJan 1, 2023
- WC coverage startsAug 9, 2025
- License expiresSep 30, 2027
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