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State files updated Oct 31, 2026
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Oregon contractor license

Diamond Group LLC

Diamond Group LLC of Beaverton holds Oregon license 250326 (RGC Residential General Contractor). The CCB file dated Oct 31, 2026 lists it as active.1 It expires Apr 3, 2028.

Active

Diamond Group LLC, Beaverton

License
250326
Class
RGC Residential General Contractor
Expires
Apr 3, 2028
Bond
$25,000 to Apr 3, 2028
Liability insurance
$1,000,000 to Feb 10, 2027
Workers' comp
Required (has employees)

CCB file dated Oct 31, 2026

From the CCB file dated Oct 31, 2026. Not a consumer report; check the board before you hire.

Has the board taken action on this license?

The CCB file doesn't list board actions. Check with the board: CCB license search

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

Bond
$25,000Rli Insurance Company, to Apr 3, 2028
Liability insurance
$1,000,000Continental Casualty Company, to Feb 10, 2027
Workers' comp
Required (has employees)

Who is on this license?

Responsible managing individual
Carlos J. Valderrama Cruces

What work does this license cover?

Issued Apr 3, 2024.

Which other Beaverton businesses hold RGC Residential General Contractor?

General Contractors in BeavertonOregon 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. Oregon 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 CCB 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 CCB 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 CCB, then check again.
  3. If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Construction Contractors Board (CCB).
  4. Check another contractor. Oregon license lookup

Sources

  1. CCB active licenses (data.oregon.gov, Oct 31, 2026)
  2. Construction Contractors Board (CCB)