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California contractor license

Altergott Construction Inc

Altergott Construction Inc of Laguna Niguel holds California license 588143 (B General Building). The CSLB file dated Oct 29, 2026 lists it as active.1 It expires Feb 29, 2028.

Licensed 36 years, longer than 88% of 115 active Laguna Niguel general contractors.

Active

Altergott Construction Inc, Laguna Niguel

License
588143
Class
B General Building
Expires
Feb 29, 2028
Bond
$25,000
Workers' comp
Insured to Feb 28, 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
$25,000Atlantic Specialty Insurance Company, from Sep 1, 2026, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredTechnology Insurance Company Inc, from Feb 28, 2026, to Feb 28, 2027

Who is on this license?

Officer
Linda A. AltergottSince Feb 9, 1990
Responsible managing officer, CEO and president
Gary M. AltergottSince Feb 9, 1990

What work does this license cover?

Issued Feb 9, 1990.

Which other Laguna Niguel businesses hold B General Building?

General Contractors in Laguna NiguelCalifornia 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 29, 2026)
  2. Contractors State License Board (CSLB)