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California contractor license

Whitmore Daniel C Builders Inc

Whitmore Daniel C Builders Inc of Mammoth Lakes holds California license 494117 (B General Building, C29 Masonry). The CSLB file dated Oct 30, 2026 lists it as active.1 It expires Aug 31, 2028.

Licensed 40 years, longer than 85% of 47 active Mammoth Lakes general contractors.

Active

Whitmore Daniel C Builders Inc, Mammoth Lakes

License
494117
Class
B General Building; C29 Masonry
Expires
Aug 31, 2028
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
$25,000Ohio Casualty Insurance Company (The), from Jan 1, 2023, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
Exemptfrom Aug 21, 2026

Who is on this license?

Officer
Leslie G. WhitmoreSince Aug 18, 2004
Responsible managing officer, CEO and president
Daniel C. WhitmoreSince Jun 25, 1986

What work does this license cover?

Issued Jun 25, 1986. Reissued Aug 18, 2004.

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 Mammoth Lakes businesses hold B General Building?

California 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)