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State files updated Oct 28, 2026
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California contractor license

Alturas Tree Services

Alturas Tree Services of Modesto holds California license 1109264 (D49 Tree Service). The CSLB file dated Oct 28, 2026 lists it as active.1 It expires Aug 31, 2027.

Active

Alturas Tree Services, Modesto

License
1109264
Class
D49 Tree Service
Expires
Aug 31, 2027
Bond
$25,000
Workers' comp
Insured to Apr 3, 2027

CSLB file dated Oct 28, 2026

From the CSLB file dated Oct 28, 2026. Not a consumer report; check the board before you hire.

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

Bond
$25,000Western Surety Company, from Jul 11, 2025, continuous
Liability insurance
Not in the CSLB fileCheck with the board
Workers' comp
InsuredWellfleet New York Insurance Company, from Apr 3, 2026, to Apr 3, 2027

What work does this license cover?

Issued Aug 24, 2023.

Which other Modesto businesses hold D49 Tree Service?

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 28, 2026)
  2. Contractors State License Board (CSLB)