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California contractor license

Optimo Plumbing And Backflow Inc

Optimo Plumbing And Backflow Inc of Los Angeles holds California license 1009954 (C36 Plumbing). The CSLB file dated Oct 30, 2026 lists it as active.1 It expires Jun 30, 2028.

Licensed 10 years, longer than 51% of 335 active Los Angeles plumbing contractors.

Active

Optimo Plumbing And Backflow Inc, Los Angeles

License
1009954
Class
C36 Plumbing
Expires
Jun 30, 2028
Bond
$25,000
Workers' comp
Insured to Jul 31, 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
$25,000Atlantic Specialty Insurance Company, from Jun 5, 2026, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredEmployers Preferred Insurance Company, from Jul 31, 2026, to Jul 31, 2027

Who is on this license?

Responsible managing officer, CEO and president
Alfredo GuzmanSince Dec 24, 2015

What work does this license cover?

Issued Dec 24, 2015. Reissued Jun 5, 2024.

Which other Los Angeles businesses hold C36 Plumbing?

Plumbing Contractors in Los AngelesCalifornia plumbing contractors

What should you check before hiring?

What to ask before you hire

  1. Get the license number in writing. The name on the license should match the name on your contract and invoice.
  2. Check the class covers the job. A license for one trade doesn't cover another. California license classes
  3. Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
  4. 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.
  5. 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)