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State files updated Oct 30, 2026
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California contractor license

Delta Insulation Services Inc

Delta Insulation Services Inc of Redwood City holds California license 1117247 (C2 Insulation and Acoustical). The CSLB file dated Oct 30, 2026 lists it as active.1 It expires Feb 29, 2028.

Active

Delta Insulation Services Inc, Redwood City

License
1117247
Class
C2 Insulation and Acoustical
Expires
Feb 29, 2028
Bond
$25,000
Workers' comp
Insured to Feb 21, 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
$25,000Philadelphia Indemnity Insurance Company, from Feb 21, 2025, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredOmaha National Casualty Company, from Feb 21, 2026, to Feb 21, 2027

Who is on this license?

Officer
Maria C. de PortilloSince Feb 28, 2024
Responsible managing officer, CEO and president
Marvin O. Portillo RodriguezSince Feb 28, 2024

What work does this license cover?

Issued Feb 28, 2024.

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)