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State files updated Oct 30, 2026
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Washington contractor license

Adagio Backflow Testing

Adagio Backflow Testing of Bellingham holds Washington license ADAGIBT759RA (PC-30 Backflow Specialty). The L&I file dated Oct 30, 2026 lists it as active.1 It expires Dec 18, 2027.

Active

  • Liability insurance ends Dec 18, 2026 (49 days)

Adagio Backflow Testing, Bellingham

License
ADAGIBT759RA
Class
PC-30 Backflow Specialty
Expires
Dec 18, 2027
Liability insurance
$1,000,000 to Dec 18, 2026

L&I file dated Oct 30, 2026

From the L&I 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 L&I file dated Oct 30, 2026. Confirm with the board: L&I contractor lookup

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

Bond
None on file
Liability insurance
$1,000,000State National Ins Co Inc, from Dec 18, 2025, to Dec 18, 2026
Workers' comp
Not in the L&I fileCheck with the board

What work does this license cover?

License level: Plumbing Contractor. Issued Dec 18, 2025.

Where are other licensed Washington contractors listed?

Washington plumbing contractors

What should you check before hiring?

What to ask before you hire

  1. Ask whether it has been renewed. Something on this license ends within 60 days. Check again before you pay a deposit.
  2. Get the license number in writing. The name on the license should match the name on your contract and invoice.
  3. Check the class covers the job. A license for one trade doesn't cover another. Washington license classes
  4. Ask for a certificate of insurance sent to you by the insurance agent, not handed over by the contractor. How to read a COI
  5. Ask who will be on site. If a crew works on your property, ask for proof of workers' comp. The L&I file doesn't record workers' comp, so ask for the certificate.
  6. 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 L&I 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 L&I, then check again.
  3. If work has started, hold further payments, keep the contract, receipts and photos, and file a complaint with Department of Labor and Industries (L&I).
  4. Check another contractor. Washington license lookup

Sources

  1. L&I contractor license data (data.wa.gov, Oct 30, 2026)
  2. Department of Labor and Industries (L&I)