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California contractor license
Z L C Corp
Z L C Corp of Concord holds California license 890327 (A General Engineering, ASB Asbestos Certification, B General Building, C21 Building Moving/Demolition, HAZ Hazardous Substance Removal Certification). The CSLB file dated Oct 30, 2026 lists it as active.1 It expires Jan 31, 2027.
Doing business as ZL Construction Corporation.
Licensed 19 years, longer than 65% of 323 active Concord general contractors.
Active
Z L C Corp, Concord
- License
- 890327
- Class
- A General Engineering; ASB Asbestos Certification; B General Building; C21 Building Moving/Demolition; HAZ Hazardous Substance Removal Certification
- Expires
- Jan 31, 2027
- Bond
- $25,000
- Workers' comp
- Insured to Sep 1, 2027
CSLB file dated Oct 30, 2026
From the CSLB file dated Oct 30, 2026. Not a consumer report; check the board before you hire.
Has the board taken action on this license?
None in the CSLB file dated Oct 30, 2026. Confirm with the board: CSLB license check
What bond, insurance and workers' comp are on file?
- Bond
- $25,000American Contractors Indemnity Company, from Jan 1, 2023, continuous
- Liability insurance
- Not in the CSLB fileCheck with the board
- Workers' comp
- InsuredOak River Insurance Company, from Sep 1, 2026, to Sep 1, 2027
Who is on this license?
- Officer
- Tisza A. ShastidSince Mar 24, 2015
- Responsible managing officer
- Frank LorinczSince Jan 29, 2007
- CEO and president
- Zalan M. LorinczSince Jan 29, 2007
What work does this license cover?
Issued Jan 29, 2007.
- A General Engineering
- ASB Asbestos Certification
- B General Building
- C21 Building Moving/Demolition
- HAZ Hazardous Substance Removal Certification
Which other Concord businesses hold A General Engineering?
- Gems Environmental Management Services IncLicensed since 2005
- U S T Testing Services IncLicensed since 2005
- Fleece CorpLicensed since 2007
- Pacific - Mountain Contractors Of California IncLicensed since 2008
- Burton Underground IncLicensed since 2008
General Contractors in ConcordCalifornia general contractors
What should you check before hiring?
What to ask before you hire
- Get the license number in writing. The name on the license should match the name on your contract and invoice.
- Check the class covers the job. A license for one trade doesn't cover another. California license classes
- Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
- Ask who will be on site. If a crew works on your property, ask for proof of workers' comp. An exemption on file means the contractor told the CSLB it has no employees.
- Put it in a written contract: license number, price, start date and payment schedule. Check the license again on the day you sign.
If the license is lapsed
- Don't sign or pay a deposit until the CSLB shows the license active again.
- Ask the contractor why. For a bond or insurance lapse, ask for proof that the new bond or policy was filed with the CSLB, then check again.
- If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Contractors State License Board (CSLB).
- Check another contractor. California license lookup
Sources
- CSLB License Master (cslb.ca.gov, Oct 30, 2026)
- Contractors State License Board (CSLB)