Alaska Plumber License Lookup

You Need to Check Two Databases

Alaska splits plumber credentialing across two separate state agencies, and neither database shows the complete picture. A plumber can appear clean in one system while holding violations or expired credentials in the other. To fully verify someone's status, you need to search both.

Database 1: DOLWD — Individual Trade Credentials

The Department of Labor and Workforce Development (DOLWD) Mechanical Inspection Section maintains records for individual Certificates of Fitness:

• Plumber Trainee COF
• Journeyman Plumber COF
• Restricted Gas (PG) and Restricted Utility (PU) COFs
• Provisional and Reciprocal COFs (out-of-state transfers)

This tells you whether the person is individually certified to perform hands-on plumbing work. A valid journeyman COF means they've completed the required hours, passed the trade exam, and their credential is current.

What it does not tell you: whether they're authorized to operate a plumbing business, whether their employer is properly registered, or whether they hold the administrative credentials needed to manage a contracting operation.

Database 2: CBPL — Business Credentials

The Division of Corporations, Business and Professional Licensing (CBPL) under the Department of Commerce, Community, and Economic Development (DCCED) maintains records for:

• Mechanical Administrator licenses (UCIP, RPHH categories)
• Mechanical Contractor Registrations
• Surety bond status
• Administrator-to-contractor assignments

This tells you whether a business entity is registered to offer plumbing services commercially and who their designated Mechanical Administrator is.

What it does not tell you: whether the administrator or the company's employees hold valid individual trade credentials from DOLWD. Those are tracked in a completely separate system.

What to Look For

Hiring a plumber for your home or business: Check DOLWD for the individual worker's journeyman COF status, then check CBPL for the contracting company's Mechanical Contractor Registration. Both should be active and current.

Verifying a potential employer: Check CBPL to confirm the company holds a valid Mechanical Contractor Registration with an assigned Mechanical Administrator. If the registration is inactive or no administrator is assigned, the company cannot legally employ you for plumbing work.

General contractor subcontracting plumbing work: Check CBPL for the plumbing sub's Mechanical Contractor Registration, surety bond, and insurance status. Then verify their administrator's license is active. This protects you from liability if the sub turns out to be unlicensed.

Real estate transactions: If the property has a private septic system, you may also need to verify the ADEC (Department of Environmental Conservation) records for a valid Certificate of On-Site Systems Approval (COSA).

Common Lookup Mistakes

Checking only one database. A valid CBPL registration and administrator assignment do not, by themselves, show that each person doing hands-on work holds a current DOLWD COF. Verify the individual worker's COF separately; an administrator without a Journeyman COF cannot personally perform hands-on installation work.

Assuming "no record found" means unlicensed. Name mismatches, middle name variations, and abbreviations can cause a valid credential to not appear in search results. Try searching by license number if you have it, or by partial name.

Confusing Anchorage municipal cards with state credentials. Anchorage issues its own qualification cards through its Building Safety Division. These are local credentials that supplement — but don't replace — the state-level COF and contractor registration.

What Unlicensed Work Looks Like

In Alaska, unlicensed plumbing work can trigger stop-work orders, civil fines, and potential liability for property damage or injuries.

The two-minute check across both DOLWD and CBPL databases is the cheapest insurance available.

The Alaska Plumber License Guide includes directory links for both state verification databases, plus the municipal lookup process for Anchorage and Fairbanks — with guidance on reading the results correctly.

See more Alaska guides →