Chung Yun Su, A General Engineering Contractor in Eastvale, CA
Chung Yun Su operating as a sole owner holds California contractor license #1120310, which is currently expired (lapsed May 31, 2026) and not valid to contract until it is renewed. First issued in 2024, the license has been on the CSLB roster for 2 years. It carries a single CSLB classification: A — General Engineering Contractor. Records show an active surety bond on file with Merchants Bonding Company (mutual) and an exempt workers' compensation status (no employees on payroll). The business is based in Eastvale, in Riverside County, California.
- License Number
- 1120310
- Issued
- May 3, 2024
- Status
- CLEAR
- Expires
- May 31, 2026
- Entity
- Sole Owner
- Surety
- Merchants Bonding Company (mutual)
- Bond Number
- 100429250
- Effective
- May 2, 2024
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- May 1, 2024
- Expires
- —
This contractor has a compliance issue in its public CSLB record:
- License expired
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Chung Yun Su licensed in California?
Chung Yun Su previously held California Contractors State License Board license number 1120310, but the license expired on May 31, 2026 and is not currently valid. It was first issued on May 3, 2024.
What does Chung Yun Su specialize in?
Chung Yun Su is licensed for one CSLB classification: A General Engineering Contractor.
Where is Chung Yun Su headquartered?
Chung Yun Su is headquartered at 7244 Morning Hills Drive, Eastvale, CA 92880, in Riverside County, California.
Does Chung Yun Su have an active surety bond on file with CSLB?
Yes. Chung Yun Su has an active California contractor surety bond filed with Merchants Bonding Company (mutual).
Does Chung Yun Su carry workers' compensation coverage?
Chung Yun Su reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Chung Yun Su's contractor license?
You can verify Chung Yun Su's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1120310.
- WC coverage startsMay 1, 2024
- Bond activeMay 2, 2024
- License issuedMay 3, 2024
- License expiredMay 31, 2026
- Inland Mechanical Construction INC#198273Lake Elsinore·A General Engineering Contractor
- Tilden-Coil Constructors INC#208556Riverside·A General Engineering Contractor
- Smith Harold K Excavating Contractor#232135Idyllwild·A General Engineering Contractor
- Near-Cal CORP#230077Lake Elsinore·A General Engineering Contractor
- Rivard Timothy A#231048Riverside·A General Engineering Contractor
- Cunningham-Davis CORP#242086Calimesa·A General Engineering Contractor
- Dbx INC#240547Temecula·A General Engineering Contractor
- Five Engineering & Plumbing INC#252617Canyon Lake·A General Engineering Contractor
Working a California job with Chung Yun Su, 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 Chung Yun Su? Claim or correct this profile