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TREFETHEN & CO LLC

ACTIVE Washington contractor license #TREFECL742MP

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LicenseCurrent is an independent service. L&I Contractor License Data — General. Includes active and other published registration statuses. Bond and insurance details are not included in this source. Verify with Washington L&I.
License overview
TREFECL742MP
ACTIVE
2026-07-24
2028-07-24
SEATTLE, WA 98134
***-***-**** · Click to see numberHide phone number2064471770
Classifications
  • BT — INST EQUIP/STAT FURN/LAB T/LO
Source details
CONSTRUCTION CONTRACTOR
Limited Liability Company
602775224

Missing fields mean not supplied in this source, not uninsured or noncompliant.

Associated personnel
******** · Click to see associated personnelHide associated personnel
  • TREFETHEN, SEAN BRADLEY · Primary principal

Last seen in successful import (UTC): 2026-10-25 14:00:38.