ContractorHistory

Contractors in Richland, WA

359 active contractors are registered with Washington L&I at a Richland, WA address. 796 registrations are on record in all, including expired and other statuses.

By the numbers

Active registrations
359
Registrations on record, all statuses
796
Registered in the last 12 months
47
Median years registered, active
5
Suspension on record
54
Complaint records matched
2

Trades in Richland

Active registrations by trade group. The group is derived from the L&I license type and specialty; each contractor page shows the state's own wording.

Longest registered

  1. PERFECTION GLASS INCRegistered since November 22, 1976
  2. SIEFKEN & SONS CONST INCRegistered since July 9, 1981
  3. MAGNUM ELECTRIC SERVICE INCRegistered since June 8, 1982
  4. INLAND MECHANICAL INCRegistered since November 12, 1985
  5. TOTAL ENGY MGT & HVAC SERV INCRegistered since September 15, 1988

Recently registered

  1. 1CORegistered on October 5, 2026
  2. NORTHSTAR EXTERIOR SERVS LLCRegistered on October 2, 2026
  3. INLAND EMPIRE COATINGS LLCRegistered on September 24, 2026
  4. IVEY ESTATES & DESIGN LLCRegistered on September 23, 2026
  5. AIRCARE HEATING & A/C LLCRegistered on September 16, 2026

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

All 796 registrations on record

Businesses by registered name and license number. Show only the 359 active registrations.