Diamond Sierra INC, C-8 Concrete Contractor in Vista, CA
Diamond Sierra INC operating as a corporation holds an active California contractor license (CSLB #1002321), valid through Jun 30, 2027. First issued in 2015, the license has been on the CSLB roster for 11 years. It carries a single CSLB classification: C-8 — Concrete Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and active workers' compensation coverage from Amtrust Insurance Company. The business is based in Vista, in San Diego County, California.
- License Number
- 1002321
- Issued
- Mar 23, 2015
- Status
- CLEAR
- Expires
- Jun 30, 2027
- Entity
- Corporation
- Surety
- American Contractors Indemnity Company
- Bond Number
- 100448411
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Amtrust Insurance Company
- Policy Number
- KWP1415674
- Effective
- Nov 12, 2025
- Expires
- Nov 12, 2026
This contractor is verified, with no adverse conditions in the current CSLB record.
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Diamond Sierra INC licensed in California?
Yes. Diamond Sierra INC holds California Contractors State License Board license number 1002321, which is active and in good standing. The license was first issued on March 23, 2015. It is valid through June 30, 2027.
What does Diamond Sierra INC specialize in?
Diamond Sierra INC is licensed for one CSLB classification: C-8 Concrete Contractor.
Where is Diamond Sierra INC headquartered?
Diamond Sierra INC is headquartered at 1647 Monte Mar Rd, Vista, CA 92084, in San Diego County, California.
Does Diamond Sierra INC have an active surety bond on file with CSLB?
Yes. Diamond Sierra INC has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Diamond Sierra INC carry workers' compensation coverage?
Yes. Diamond Sierra INC carries active workers' compensation coverage through Amtrust Insurance Company.
How do I verify Diamond Sierra INC's contractor license?
You can verify Diamond Sierra INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1002321.
- License issuedMar 23, 2015
- Bond activeJan 1, 2023
- WC coverage startsNov 12, 2025
- WC expiresNov 12, 2026
- License expiresJun 30, 2027
- Keen Concrete LLC#612157Carlsbad·C-8 Concrete Contractor
- Morello Concrete Construction INC#615793Santee·C-8 Concrete Contractor
- Cecena Steve Concrete INC#615639Alpine·C-8 Concrete Contractor
- 3 - D Enterprises Incorporated#621125San Diego·A General Engineering Contractor
- Tarantino Pete & Sal Construction INC#618553La Mesa·A General Engineering Contractor
- Hammer Construction Company#642039National City·A General Engineering Contractor
- Hess Contracting INC#623620El Cajon·B General Building Contractor
- Cobian Mike#633446Vista·C-8 Concrete Contractor
Working a California job with Diamond Sierra INC, 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 Diamond Sierra INC? Claim or correct this profile