Shannon & Wilson Inc.
Seattle, WA Doing business as Shannon & Wilson Incorporated Corporate Headquarters
- UEI
- KJZTRPLEXUN9
- CAGE
- 5A336
- Primary NAICS
- 541330 Engineering Services
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- NAICS codes registered in SAM.gov
- Corporate family
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Shannon & Wilson Inc.
KJZTRPLEXUN9
- Shannon & Wilson Inc. CWGYMNX9D228
- Shannon & Wilson Inc. M1NZA1TEJQF5
- Shannon & Wilson Inc. UTLTVE89JJG6
- Shannon & Wilson Inc. VLMGFK8YUKK6
- Shannon & Wilson Inc. HQ2QTF419M88
- Shannon & Wilson, Inc. MMC9F7QGEJ76
- Shannon & Wilson, Inc. KN1BGLMKXRL5
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Shannon & Wilson Inc.
KJZTRPLEXUN9
- SAM.gov registration date
- Physical address
- 400 N 34th St #100, Seattle, WA 98103, USA
- Website
- shannonwilson.com
- Founded
- 1954
- Employees
- 251-1K
- Estimated annual revenue
- $10M-$50M
- Industry
-
- Industrials
- Capital Goods
- Construction & Engineering
- Civil Engineering
- SIC code
- 87 Engineering & Management Services
- Profiles
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Recent federal awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| Indefinite delivery indefinite quantity (IDIQ), multiple award task order contract (MATOC) for architect-engineer… | ENDIST Seattle | $2,500 | |
| Geotechnical survey at the biorka, AK atcbi | Franchise Acquisition Servies | $220,919 | |
| Hahd geologic explorations | ENDIST Seattle | $4,110,077 | |
| MSC wall expert to support TX ftfw laat 10(2) entrance road and wildlife crossing for construction claim legal support… | Federal Highway Administration | $47,202 | |
| Expert witness services for or DOT crgnsa 100(1), historic columbia river highway state trail | Federal Highway Administration | $224,099 |
About Shannon & Wilson Inc.
Shannon & Wilson Inc., a Seattle-based geotechnical and civil engineering consulting firm, operates as a prime contractor (98% of recent awards) on full-and-open federal contracts with no SBA set-aside designations, delivering geotechnical investigations, geological explorations, engineering analyses, and expert consulting services across 24 distinct federal agencies over the past several years.
Shannon & Wilson's customer base concentrates heavily with defense and infrastructure agencies. The top five customer agencies account for 85% of awards by count, dominated by the Department of Homeland Security U.S. Coast Guard (159 awards), the Department of the Army (84 awards), and the Army Corps of Engineers (117 awards combined across regional districts and headquarters). The dollars, however, follow the Corps of Engineers: USACE Seattle Engineering District and USACE headquarters combined hold $35.7 million in potential value (66% of the vendor's combined potential value across all awards), while FHWA, USACE Walla Walla District, and FAA round out the top five by value. The divergence signals that Coast Guard awards run high-volume, lower-dollar work while USACE anchors most of the firm's contract value. Shannon & Wilson's vehicle portfolio rests on five indefinite delivery contracts, led by IDC W912DW09D1005 (30 task orders, $4.6 million combined potential value), DACW6891D0004 (24 task orders), and DTCG5000D643RV3 (23 task orders), all issued by USACE or FHWA for geotechnical and architectural-engineering services in the Pacific Northwest and nationally.
Recent prime work includes a $4.11 million firm fixed price delivery order from USACE awarded September 2023 for hard rock geologic explorations under a $5 million indefinite delivery contract covering Seattle, Walla Walla, and Portland district boundaries; a $228,517 labor-hour expert witness contract from FHWA awarded July 2021 for the Historic Columbia River Highway State Trail project (ultimate completion August 2026); and a $220,919 purchase order from FAA Franchise Acquisition Services awarded December 2024 for a geotechnical survey at Biorka Airport, Alaska. The firm's work spans dams, levees, fish passage facilities, transportation infrastructure assessments, and military and Coast Guard infrastructure projects. Shannon & Wilson maintains a minimal subcontractor footprint — only 11 sub-awards (2% of total awards) — and is itself subcontracted by major engineering firms including HDR Engineering, AECOM Technical Services, Burns & McDonnell, and Weston Solutions for geotechnical design, field investigations, thermal testing, and engineering services on FHWA, USACE, and USCG projects. Service Contract Inventory records show minimal SCI-reportable federal services activity (6 records, all as a named subcontractor, 1.9 FTEs reported in FY2024), indicating that Shannon & Wilson's federal revenue flows primarily through purchase orders and delivery orders on IDCs rather than through large service contracts above the $150,000 SCI reporting threshold. Activity over the past five years remains modest and flat — two to five awards per year from 2023 through 2025 — with only one award facing recompete inside the next twenty-four months ($229 thousand combined potential value). The vendor's NAICS footprint centers on Engineering Services (152 awards) and Remediation Services (11 awards), with PSC coding dominated by Architect and Engineering classifications (180 and 172 awards respectively for General A&E and Landscaping/Interior Design work).
Quick answers
What is Shannon & Wilson Inc.'s UEI?
Shannon & Wilson Inc.'s Unique Entity ID (UEI) in SAM.gov is KJZTRPLEXUN9.
What is Shannon & Wilson Inc.'s CAGE code?
Shannon & Wilson Inc.'s CAGE code is 5A336.
What is Shannon & Wilson Inc.'s primary NAICS code?
Shannon & Wilson Inc.'s primary NAICS code is 541330 (Engineering Services).
Where is Shannon & Wilson Inc. located?
Shannon & Wilson Inc.'s physical address in SAM.gov is 400 N 34th St #100, Seattle, WA 98103, USA.
Is Shannon & Wilson Inc. registered in SAM.gov?
Yes. Shannon & Wilson Inc.'s SAM.gov registration is active through March 23, 2027.
What is Shannon & Wilson Inc.'s most recent federal award?
Shannon & Wilson Inc.'s most recent federal contract award is Indefinite delivery indefinite quantity (IDIQ), multiple award task order contract (MATOC) for architect-engineer… (W912DW26FA047), from ENDIST Seattle, on April 27, 2026.
On GovTribe
See Shannon & Wilson Inc.'s full federal record
- Federal contract awards
- IDV awards
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
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