Skip to content
State files updated Oct 30, 2026
Look up a contractor
MenuClose

Home / License lookup / California / Line Tech Plumbing Inc

California contractor license

Line Tech Plumbing Inc

Line Tech Plumbing Inc of La Mirada holds California license 549584 (C36 Plumbing). The CSLB file dated Oct 30, 2026 lists it as active.1 It expires Mar 31, 2027.

Licensed 37 years, longer than 91% of 9,636 active California plumbing contractors.

Active

  • Workers' comp ends Dec 27, 2026 (58 days)

Line Tech Plumbing Inc, La Mirada

License
549584
Class
C36 Plumbing
Expires
Mar 31, 2027
Bond
$25,000
Workers' comp
Insured to Dec 27, 2026

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
$25,000Atlantic Specialty Insurance Company, from Sep 1, 2026, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredGreat American Insurance Company, from Dec 27, 2025, to Dec 27, 2026

Who is on this license?

Officer
Young O. ByunSince Mar 4, 2003
Responsible managing officer, CEO and president
Duk S. ByunSince Nov 23, 1988

What work does this license cover?

Issued Nov 23, 1988. Reissued Mar 4, 2003.

Which other La Mirada businesses hold C36 Plumbing?

California plumbing contractors

What should you check before hiring?

What to ask before you hire

  1. Ask whether it has been renewed. Something on this license ends within 60 days. Check again before you pay a deposit.
  2. Get the license number in writing. The name on the license should match the name on your contract and invoice.
  3. Check the class covers the job. A license for one trade doesn't cover another. California license classes
  4. Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
  5. 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.
  6. 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

  1. Don't sign or pay a deposit until the CSLB shows the license active again.
  2. 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.
  3. If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Contractors State License Board (CSLB).
  4. Check another contractor. California license lookup

Sources

  1. CSLB License Master (cslb.ca.gov, Oct 30, 2026)
  2. Contractors State License Board (CSLB)