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State files updated Oct 31, 2026
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California contractor license

Weissker Herman Inc

Weissker Herman Inc of Riverside holds California license 183556 (A General Engineering, C10 Electrical). The CSLB file dated Oct 31, 2026 lists it as active.1 It expires Apr 30, 2028.

Licensed 67 years, longer than 98% of 196 active Riverside electrical contractors.

Active

Weissker Herman Inc, Riverside

License
183556
Class
A General Engineering; C10 Electrical
Expires
Apr 30, 2028
Bond
$25,000
Workers' comp
Insured to Mar 15, 2027

CSLB file dated Oct 31, 2026

From the CSLB file dated Oct 31, 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 31, 2026. Confirm with the board: CSLB license check

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

Bond
$25,000Fidelity And Deposit Company Of Maryland, from Jan 1, 2023, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredStarr Indemnity & Liability Company, from Mar 15, 2026, to Mar 15, 2027

Who is on this license?

Officer
Luis A. ArmonaSince Apr 21, 2003
Officer
Mario A. TapanesSince Nov 4, 2014
Officer
Jason A. HaasSince Jul 15, 2026
Responsible managing officer
Quinton S. KarstSince Oct 28, 2014
Responsible managing officer
Henry A. BarberSince Sep 27, 2024

What work does this license cover?

Issued May 22, 1959.

Which other Riverside businesses hold A General Engineering?

Electrical Contractors in RiversideCalifornia electrical contractorsGeneral Contractors in RiversideCalifornia general 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 31, 2026)
  2. Contractors State License Board (CSLB)