Flatline Concrete Services, C-8 Concrete Contractor in Marysville, CA
Flatline Concrete Services operating as a sole owner holds an active California contractor license (CSLB #1145166), valid through Oct 31, 2027. First issued in 2025, the license has been on the CSLB roster for 1 year. It carries a single CSLB classification: C-8 — Concrete Contractor. Records show an active surety bond on file with Jet Insurance Company and active workers' compensation coverage from Great American Alliance Insurance Company. The business is based in Marysville, in Yuba County, California.
- License Number
- 1145166
- Issued
- Oct 17, 2025
- Status
- CLEAR
- Expires
- Oct 31, 2027
- Entity
- Sole Owner
- Surety
- Jet Insurance Company
- Bond Number
- BX0074516
- Effective
- Oct 6, 2025
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Great American Alliance Insurance Company
- Policy Number
- WCF41627600
- Effective
- Oct 14, 2025
- Expires
- Oct 14, 2026
Recently licensed: the CSLB license is active and in good standing, issued within the last 2 years.
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Flatline Concrete Services licensed in California?
Yes. Flatline Concrete Services holds California Contractors State License Board license number 1145166, which is active and in good standing. The license was first issued on October 17, 2025. It is valid through October 31, 2027.
What does Flatline Concrete Services specialize in?
Flatline Concrete Services is licensed for one CSLB classification: C-8 Concrete Contractor.
Where is Flatline Concrete Services headquartered?
Flatline Concrete Services is headquartered at P O Box 1410, Marysville, CA 95901, in Yuba County, California.
Does Flatline Concrete Services have an active surety bond on file with CSLB?
Yes. Flatline Concrete Services has an active California contractor surety bond filed with Jet Insurance Company.
Does Flatline Concrete Services carry workers' compensation coverage?
Yes. Flatline Concrete Services carries active workers' compensation coverage through Great American Alliance Insurance Company.
How do I verify Flatline Concrete Services's contractor license?
You can verify Flatline Concrete Services's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1145166.
- Bond activeOct 6, 2025
- WC coverage startsOct 14, 2025
- License issuedOct 17, 2025
- WC expiresOct 14, 2026
- License expiresOct 31, 2027
- Oseguera's Custom Concrete#1142161Marysville·C-8 Concrete Contractor
- California Custom Concrete#1136824Olivehurst·C-8 Concrete Contractor
- Gassaway Concrete INC#1134100Plumas Lake·C-8 Concrete Contractor
- E & E Concrete Construction INC#1094017Olivehurst·C-8 Concrete Contractor
- Family 1st Concrete Construction INC#1088810Olivehurst·C-8 Concrete Contractor
- Vhc Scapes INC#1089153Olivehurst·C-8 Concrete Contractor
- Heilman H C Construction#622928Marysville·C-8 Concrete Contractor
- Felix Concrete#899898Olivehurst·C-8 Concrete Contractor
Working a California job with Flatline Concrete Services, or chasing an unpaid invoice? These free tools track your mechanics lien deadlines and rights under California Civil Code §§8200–8848.
- California preliminary notice deadline calculatorFind your 20-day deadline and the lien rights at risk.
- Do I need a preliminary notice in California?Answer a few questions to see if the 20-day notice applies.
- Did I lose my California lien rights?Check whether your mechanics lien window has passed.
- Unpaid construction invoice in CaliforniaYour options and deadlines for collecting on a California job.
Own Flatline Concrete Services? Claim or correct this profile