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Records copied from Washington State L&I and the Oregon Construction Contractors Board.

Ordered by first registration date

The longest-established contractors on the registry

Unexpired registrations, oldest first. The sort key is the date the agency first issued the licence — nothing here is ranked by us.

114,587 unexpired records·2,615 issued before 1990·116 before 1970

114,587Unexpired registrations
2,615Issued before 1990
116Issued before 1970
2000Oldest still unexpired

Records

Oldest first

Showing 10,27610,300 of 114,587 records

Burns & McDonnell Eng Co IncKansas City, WAWA L&IBURNSME005NPLicensed 2000ActiveContract Interiors LLCSalem, ORWA L&ICONTRIL006MMLicensed 2000ActivePioneer Fence CompanyVancouver, WAWA L&IPIONEFC000NPLicensed 2000ActiveSteward Construction CorpHillsboro, OROregon CCBOR-145953Licensed 2000ActiveLane Supply IncArlington, WAWA L&ILANESI*010MTLicensed 2000ActiveGregory Damon HuntonVancouver, WAOregon CCBOR-145959Licensed 2000ActiveAxiom Constructors LLCSeattle, WAWA L&IAXIOMCL002MOLicensed 2000ActiveNc Structures LLCPort Orchard, WAWA L&INCSTRL*002N2Licensed 2000ActiveCarlson Construction/RemodelIssaquah, WAWA L&ICARLSC*003N3Licensed 2000ActiveMullen Construction LLCGig Harbor, WAWA L&IMULLECL002N3Licensed 2000ActiveMcDowell Northwest Pile King IncKent, WAOregon CCBOR-145903Licensed 2000ActiveMaster CarpetingKent, WAWA L&IMASTEC*003N4Licensed 2000ActiveIndustrial Concrete LLCKeizer, ORWA L&IINDUSCL009N4Licensed 2000ActiveK S Construction IncAuburn, WAWA L&IKSCONI*005N5Licensed 2000ActiveNorthwest Const & Supply IncColumbia, WAWA L&INORTHCS000N5Licensed 2000ActiveCains Prs Wshg/Prp Mgmt Ser InMaple Valley, WAWA L&ICAINSPW008N8Licensed 2000ActiveKulchin Foundation Drilling CoLakewood, WAOregon CCBOR-146010Licensed 2000ActiveScott W HolmanOregon City, OROregon CCBOR-146018Licensed 2000ActiveJones Boys Maintenance Co IncBellevue, WAWA L&IJONESBM006NULicensed 2000ActivePlatte Htg & A/C IncYakima, WAWA L&IPLATTHA007B4Licensed 2000ActiveLakeside Plumbing & Htg IncSeattle, WAWA L&ILAKESPH001OALicensed 2000ActiveBruun ConstructionPortland, ORWA L&IBRUUNC*000OALicensed 2000ActiveCady ConstructionSeattle, WAWA L&ICADYC**000OALicensed 2000ActivePlumb Level ConstructionChehalis, WAWA L&IPLUMBLC003OALicensed 2000ActiveR L Simmons ConstructionClinton, WAWA L&IRLSIMC*003OALicensed 2000Active

What licence age does and does not mean

A registration first issued decades ago means the credential has been maintained that long. It does not necessarily mean the same people run the business, or that the business has traded continuously — ownership can change while a registration is kept alive. Read it as a fact about the licence, not a citation for the firm. Method is on the sources page.

Verify any record directly with the issuing agency: WA L&I Verify a Contractor · Oregon CCB licence search

For contractors

Been licensed for decades and still invisible online?

A registration from 1987 is worth more than any badge a directory can sell you. Most homeowners will never see it unless your website says so.

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Published by PNW Contractor Marketing, SeaTac, Washington. This directory reproduces public licence records and is not affiliated with, endorsed by, or operated by any state agency.Washington data as of July 2026. Sources & method