General contractor · Richland, WA
Siefken & Sons Const Inc
Active Washington registration SIEFKSC198MZ · per L&I records
LicensedBondedInsured
Is Siefken & Sons Const Inc Licensed?
Washington L&I records list Siefken & Sons Const Inc with registration number SIEFKSC198MZ and status ACTIVE, valid until Jul 15, 2027. The business address on file is in Richland, WA 99352.
License Details
- License #
SIEFKSC198MZ- Status
- ACTIVE
- License type
- Construction Contractor
- Specialty
- General
- First effective
- Jul 9, 1981
- Expires
- Jul 15, 2027
- Business type
- Corporation
- UBI (state business ID)
- 600402552
- City
- Richland, WA 99352
Bond and Insurance on File
- Surety bond
- $30,000 · Travelers Cas and Surety Co of America
Effective Jun 19, 2025 · Until Canceled - Liability insurance
- $1,000,000 · Cincinnati Ins Co
Expires Jun 19, 2027
Accuracy notice. Data from Washington L&I open data (public domain, PDDL), not affiliated with any government. Records change; confirm on the official L&I Verify tool before hiring. Search other businesses with the Washington contractor license lookup.
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