Wipf Construction, LLC

Wipf Construction, LLC, a for-profit limited liability partnership based in Ukiah, California, delivers water, wastewater, and sanitation infrastructure construction to Native American tribal communities across Northern California as a prime contractor under Indian Health Service (IHS) indefinite-delivery contracts, competing exclusively in the Total Small Business set-aside category.

Wipf Construction holds a single-award indefinite-delivery contract (IDC 75H70324D00002) with the IHS carrying a $1.79 million ceiling and a performance period extending through April 15, 2029. The company's work is narrowly specialized: construction of individual wastewater disposal systems, septic tanks, water systems, and onsite sanitation infrastructure for Native American homes and tribal facilities in Mendocino, Lake, and Sonoma Counties, California. Recent delivery orders under this vehicle include a $43,130 Total Small Business firm fixed-price order (awarded January 30, 2026) to rehabilitate a septic tank and replace the drain field at the Sherwood Valley Unified Field Office in Rohnert Park with a 120-calendar-day performance period; a $47,480 order (November 6, 2024) for septic system construction at the Wesley Clark residence in Hopland; and a $35,039 order (July 17, 2025) for water and wastewater system construction at the Linda Tuscano residence in Lakeport. The company also holds three additional smaller IDCs with the IHS: IDC 75H70318D00005 (21 task orders, $778 thousand combined potential value), HHSI235201300003I (9 task orders, $740 thousand), and HHSI235201600003I (7 task orders, $159 thousand).

Customer concentration is absolute — 100% of the company's 46 awards and $6 million in combined potential value derive from a single agency, the Indian Health Service, with no subcontract work in the portfolio. Activity peaked in 2022 (9 awards) and has declined substantially since, with only 1 award in 2026 and 2 in 2025. Only one award ($35 thousand) reaches ultimate completion within the next twenty-four months, suggesting minimal recompete exposure in the near term. The company's capability footprint aligns precisely with NAICS 238110 (Water and Sewer Line and Related Structures Construction) and PSC codes for construction of sewage and waste facilities, supporting tribal infrastructure development in underserved rural areas across the Northern California region.

Underground construction, water sewer, water main, major traffic control, fire sprinkler installation