License is active
Source: Contractors State License Board (CSLB)
Licensed
Current and in good standing
Bonded
$25,000 surety bond
WC exempt
No employees — exempt from requirement
Clean record
No complaints or disciplinary actions
Hiring this contractor?
Get alerts if their license status changes.
You're monitoring this license!
We'll email you if the license status, bond, or complaint history changes.
Something went wrong
Is this your business?
Claim your profile to manage your listing.
Claim request submitted!
We'll be in touch at the email you provided to verify your identity.
Something went wrong
PROTOPAPPAS JOHN
Owner: JOHN PROTOPAPPAS
- License Number
- 589755
- State
- California
- Status
- active
- Business Type
- Sole Owner
- Address
- 3697 MT DIABLO BLVDSUITE 300 LAFAYETTE, CA, 945493747 Contra Costa County
- Phone
- (510) 452 2944
License Dates
Issued
03/07/1990
Expires
12/31/2026
Expires in 9 months
Inactivated
09/01/1997
Reactivated
12/28/2000
CSLB Last Updated
12/24/2025
License Classifications
Personnel & Officers
PROTOPAPPAS JOHN
Sole Owner
Contractor Bond
Amount: $25,000
Company: MERCHANTS BONDING COMPANY (MUTUAL)
Bond #101678855
Effective: 12/22/2025
Workers' Compensation
Owner/officer with no employees — exempt from WC requirement
CSLB designation: Exempt
Complaints & Disciplinary History
This reflects CSLB's bulk license data. For detailed complaint history including pending investigations, check the official CSLB record.
Verify this record on the official state licensing board
View on Contractors State License Board (CSLB) →Learn how to verify contractor licenses in California
California licensing guide →Data sourced from official state licensing board records. Always confirm critical information directly with the state board.
Verify Another Contractor
Homeowner Resources
Other Licensed General Building Contractor in LAFAYETTE
PSR WEST COAST BUILDERS INC
License #919541 · CA
M G BAY AREA CONSTRUCTION
License #946904 · CA
AMBROSE GROUP INC THE
THE AMBROSE GROUP INC
License #947684 · CA
LUENGO NICHOLAS M CONSTRUCTION INC
NICHOLAS M LUENGO CONSTRUCTION INC
License #986813 · CA
J RAND CONSTRUCTION INC
License #989806 · CA