ContractorHistory

Excavation and side sewer contractors in Washington

478 active excavation and side sewer contractors are registered with Washington L&I. 1,050 registrations are on record in all, including expired and other statuses.

54 of the active excavation and side sewer contractors registered in Washington are based in other states.

By the numbers

Active registrations
478
Registrations on record, all statuses
1,050
Registered in the last 12 months
68
Median years registered, active
9
Suspension on record
65
Complaint records matched
2
Active, based outside Washington
54

Excavation and side sewer contractors by city

Active registrations in the Washington cities with the most, among cities that have a directory page.

Longest registered

  1. HARRY CARLYLE EXCA INCRegistered since April 5, 1974 · Walla Walla, WA
  2. SUNSET SEPTIC TANK CO INCRegistered since September 9, 1975 · Kent, WA
  3. STANGLAND CONST INCRegistered since February 13, 1976 · Aberdeen, WA
  4. R & R CABLE COMPANYRegistered since June 1, 1977 · Roslyn, WA
  5. GRADER SERVICESRegistered since June 14, 1977 · Lakebay, WA

Recently registered

  1. SEATTLE UNDERGROUND SEWER LLCRegistered on October 2, 2026 · Maple Valley, WA
  2. STEADFAST SEPTICRegistered on September 30, 2026 · Post Falls, ID
  3. SONCO CONSTRUCTION INCRegistered on September 23, 2026 · San Bernardino, CA
  4. CHRIS DEVELOPMENT LLCRegistered on September 14, 2026 · Brier, WA
  5. 401 CONSTRUCTION LLCRegistered on August 25, 2026 · North Bend, WA

Active registrations, by the effective date on the state's record.

478 active registrations

Businesses by registered name and license number. Show all 1,050 registrations on record, including expired.