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California contractor license

Sosa Kitchen & Bath Remodeling

Sosa Kitchen & Bath Remodeling of Livermore holds California license 512183 (B General Building, C54 Ceramic and Mosaic Tile). The CSLB file dated Oct 30, 2026 lists it as active.1 It expires Jun 30, 2027.

Doing business as Sosa Granite & Marble Inc.

Licensed 39 years, longer than 83% of 192 active Livermore general contractors.

Active

  • Workers' comp ends Dec 1, 2026 (32 days)

Sosa Kitchen & Bath Remodeling, Livermore

License
512183
Class
B General Building; C54 Ceramic and Mosaic Tile
Expires
Jun 30, 2027
Bond
$25,000
Workers' comp
Insured to Dec 1, 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
$25,000American Contractors Indemnity Company, from Jan 1, 2023, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredInsurance Company Of The West, from Dec 1, 2025, to Dec 1, 2026

Who is on this license?

Officer
Mario E. SosaSince Apr 29, 2003
Responsible managing officer
Mario SosaSince Jun 10, 1987

What work does this license cover?

Issued Jun 10, 1987. Reissued Jun 7, 2001.

Which other Livermore businesses hold B General Building?

General Contractors in LivermoreCalifornia general 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)