Giannini Construction LLC
Giannini Construction LLC operating as a limited liability is licensed in California under CSLB number 1140565. The license was first issued in 2025, putting the business at 1 year on the active CSLB roster. It carries a single CSLB classification: A — General Engineering Contractor. Records show an active surety bond on file with Nationwide Mutual Insurance Company and active workers' compensation coverage from Great American Alliance Insurance Company. The business is based in San Gregorio, in San Mateo County, California.
- License Number
- 1140565
- Issued
- Jul 17, 2025
- Status
- CLEAR
- Expires
- Jul 31, 2027
- Entity
- Limited Liability
- Surety
- Nationwide Mutual Insurance Company
- Bond Number
- 7901205901
- Effective
- Jul 11, 2025
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Great American Alliance Insurance Company
- Policy Number
- F2918960000
- Effective
- Jan 22, 2026
- Expires
- Jan 22, 2027
This contractor warrants a closer look before contracting:
- License issued less than 2 years ago
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Giannini Construction LLC licensed in California?
Yes. Giannini Construction LLC holds California Contractors State License Board license number 1140565. The license was first issued on July 17, 2025. It is valid through July 31, 2027.
What does Giannini Construction LLC specialize in?
Giannini Construction LLC is licensed for one CSLB classification: A General Engineering Contractor.
Where is Giannini Construction LLC headquartered?
Giannini Construction LLC is headquartered at P O Box 179, San Gregorio, CA 94074, in San Mateo County, California.
Does Giannini Construction LLC have an active surety bond on file with CSLB?
Yes. Giannini Construction LLC has an active California contractor surety bond filed with Nationwide Mutual Insurance Company.
Does Giannini Construction LLC carry workers' compensation coverage?
Yes. Giannini Construction LLC carries active workers' compensation coverage through Great American Alliance Insurance Company.
How do I verify Giannini Construction LLC's contractor license?
You can verify Giannini Construction LLC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1140565.
- Bond activeJul 11, 2025
- License issuedJul 17, 2025
- WC coverage startsJan 22, 2026
- WC expiresJan 22, 2027
- License expiresJul 31, 2027
- Huettig & Schromm INC#129060Menlo Park·A General Engineering Contractor
- Rudolph & Sletten INC#198069Menlo Park·A General Engineering Contractor
- Bay Area Paving CO#250290San Carlos·A General Engineering Contractor
- Kelley Les INC#252313Belmont·A General Engineering Contractor
- Andreini Brothers INC#239322Half Moon Bay·A General Engineering Contractor
- Obayashi Corporation#346881Foster City·A General Engineering Contractor
- Amoroso S J Construction CO LLC#331024San Mateo·A General Engineering Contractor
- Edward Andreini & Sons INC#333006Half Moon Bay·A General Engineering Contractor