Welfl Construction Corp
Yankton, SD
- UEI
- KC6RN3ANHJH5
- CAGE
- 0LW30
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
- SAM.gov registration date
- Physical address
- 800 W 23rd St, Yankton, SD 57078, USA
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $415,454 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Interior | $415,454 |
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Similar vendors
| Vendor | Location | Primary NAICS |
|---|---|---|
| C. Eagle Construction, LLC | Woonsocket, SD | 238110 Poured Concrete Foundation and Structure Contractors |
| Preferred 1 Concrete MN LLC | Webster, MN | 238110 Poured Concrete Foundation and Structure Contractors |
| TM Commercial Concrete | Dallas, TX | 238110 Poured Concrete Foundation and Structure Contractors |
| The Spruce Valley Corporation | Middle River, MN | 237310 Highway, Street, and Bridge Construction |
| Midco Diving & Marine Services Inc. | Rapid City, SD | 237990 Other Heavy and Civil Engineering Construction |
About the company
Welfl Construction Corp, operating through its Welfl Construction Corporation division, is a small-business prime contractor based in Yankton, South Dakota, that delivers concrete repair, water infrastructure construction, and general building rehabilitation to federal agencies under total small business set-asides. The vendor operates exclusively as a prime contractor (100% of recent awards) with no subcontract footprint, competing solely under small-business set-asides with no full-and-open awards in the source data.
Welfl's customer concentration is heavily weighted to a single agency within the Department of the Interior. The Department of the Interior Fish and Wildlife Service Region 6 accounts for 9 awards (81% coverage by count) and $1.4 million in combined potential value, anchored by three recent definitive contracts awarded in 2026: a $362,100 contract for external catch basin construction at Gavins Point National Fish Hatchery (excavation, reinforced concrete structures, sluice gate valve installation, Davis-Bacon compliant, firm fixed-price, due November 2, 2026); a $33,750 concrete repair contract at the same facility (ultimate completion May 31, 2027); and a $19,604 purchase order for ES building rehabilitation (completed October 9, 2026). The Department of the Army Corps of Engineers accounts for the second-largest customer base (6 awards totaling $127 thousand combined potential value), with the balance split between the Department of the Interior Fish and Wildlife Service and the Department of Justice Bureau of Prisons.
Activity is episodic rather than sustained — one award in 2015, two in 2016, then gaps in 2017, 2019, 2021–2025, with three awards clustered in 2026. The combined obligated value ($2.8 million) exceeds combined potential value ($1.8 million), indicating invoiced work beyond initial ceiling estimates. Two awards carrying $396 thousand in combined potential value reach ultimate completion within the next twenty-four months and will face recompete. Welfl's capability portfolio aligns with primary NAICS codes 237110 (Water and Sewer Line and Related Structures Construction, 6 awards) and 236220 (Commercial and Institutional Building Construction, 6 awards), with secondary work in concrete foundations and roofing. All work is performed in the Yankton, South Dakota region, reflecting a regional construction footprint serving federal facilities.
Quick answers
Is Welfl Construction Corp registered in SAM.gov?
Yes. Welfl Construction Corp's SAM.gov registration is active through September 18, 2027.
How much has Welfl Construction Corp received in federal contracts?
Federal contracts obligated $415,454 to Welfl Construction Corp in fiscal years 2023 through 2027.
What is Welfl Construction Corp's most recent federal award?
Welfl Construction Corp's most recent federal contract award is SD-gavins PT NFH-concrete repair project (140FGA26C0050), from Fish and Wildlife Service, on September 15, 2026.
On GovTribe
See Welfl Construction Corp's full federal record
- Federal contract awards
- Funding analysis by agency, NAICS and set-aside
- Similar vendors