Skip to content
State files updated Oct 30, 2026
Look up a contractor
MenuClose

Home / License lookup / California / Yellowstone Construction Professionals LLC

California contractor license

Yellowstone Construction Professionals LLC

Yellowstone Construction Professionals LLC of San Francisco holds California license 1094285 (B General Building, C10 Electrical). The CSLB file dated Oct 30, 2026 lists it as active.1 It expires Mar 31, 2027.

Active

Yellowstone Construction Professionals LLC, San Francisco

License
1094285
Class
B General Building; C10 Electrical
Expires
Mar 31, 2027
Bond
$25,000
Workers' comp
Exempt

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
$25,000Western Surety Company, from Mar 9, 2025, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
Exemptfrom Mar 3, 2025

Who is on this license?

Responsible managing member
Dermot P. NaughtenSince Jul 21, 2022

What work does this license cover?

Issued Jul 21, 2022. Reissued Mar 30, 2023.

The workers' comp exemption means the holder told the CSLB it has no employees. If a crew works on your job, ask for a workers' comp certificate.

Which other San Francisco businesses hold B General Building?

Electrical Contractors in San FranciscoCalifornia electrical contractorsGeneral Contractors in San FranciscoCalifornia 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 30, 2026)
  2. Contractors State License Board (CSLB)