Guest, Steven G

Guest, Steven G is a self-certified small disadvantaged business sole proprietorship based in Chamberlain, South Dakota, that provides HVAC equipment procurement and installation services to federal facilities in the upper Midwest under total small business set-asides. The vendor operates exclusively as a prime contractor (100% of recent awards) across a portfolio of nineteen awards with a combined potential value of $626 thousand. Guest has held federal contractor status since August 2005 and operates under primary NAICS 238220 (Plumbing, Heating, and Air-Conditioning Contractors) and PSC 4120 (Air Conditioning Equipment).

Guest's customer base concentrates heavily with the Department of Energy's Western Area Power Administration, which accounts for 12 awards and $396 thousand of combined potential value (95% coverage by award count and 89% by potential value). The Department of the Army Corps of Engineers Engineering District Omaha represents the secondary customer with four awards and $147 thousand, while the Department of Health and Human Services Indian Health Service holds two awards worth $14 thousand. All three agencies rank identically in both award-count and potential-value rankings, indicating stable customer engagement rather than concentration tension. Geographically, work concentrates at WAPA Upper Great Plains Region facilities across South Dakota, North Dakota, Minnesota, and Iowa, with repeater stations and substations as the primary operational locations.

Recent activity shows growth trajectory: four awards in 2026 through September, up from two in 2025 and two in 2024. Within the next twenty-four months, four awards with a combined potential value of $134 thousand reach ultimate completion and face recompete exposure. Representative work includes a $44,237 definitive contract awarded July 30, 2026, for HVAC installation at Colome, Gettysburg, and Okreek repeater stations; a $61,227 purchase order awarded September 19, 2025, for HVAC provision and installation at seven WAPA locations; and a $33,251 purchase order awarded September 6, 2024, for Marvair HVAC unit purchase and installation at Bijou Repeater, Battle Mountain, and Rapid City. All awards carry firm fixed-price terms. The vendor's capability portfolio centers on Marvair, Bard, and mini-split unit installation, with secondary work in electrical contracting and equipment manufacturing. Guest operates in a niche market—small-dollar, geographically concentrated HVAC maintenance and upgrade work for power administration and Army Corps facilities—where over two decades of federal contractor experience and established relationships with WAPA's Upper Great Plains Region have generated repeating purchase orders under total small business set-asides.