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State files updated Oct 29, 2026
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California contractor license

MCM Plumbing

MCM Plumbing of San Leandro holds California license 1043312 (C36 Plumbing). The CSLB file dated Oct 29, 2026 lists it as active.1 It expires Oct 31, 2027.

Doing business as MCM Plumbing & Heating Corp.

Active

MCM Plumbing, San Leandro

License
1043312
Class
C36 Plumbing
Expires
Oct 31, 2027
Bond
$25,000
Workers' comp
Insured to Jan 26, 2027

CSLB file dated Oct 29, 2026

From the CSLB file dated Oct 29, 2026. Not a consumer report; check the board before you hire.

What bond, insurance and workers' comp are on file?

Bond
$25,000Jet Insurance Company, from Sep 1, 2026, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredWesco Insurance Company, from Jan 26, 2026, to Jan 26, 2027

Who is on this license?

Officer
Vanessa L. IrvingSince Oct 24, 2023
Responsible managing officer, CEO and president
Sean P. McMullenSince Aug 20, 2018

What work does this license cover?

Issued Aug 20, 2018. Reissued Oct 24, 2023.

Which other San Leandro businesses hold C36 Plumbing?

California 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 29, 2026)
  2. Contractors State License Board (CSLB)