Larson Design Group Mason & Hanger Joint Venture

Larson Design Group Mason & Hanger Joint Venture is a for-profit organization established as a joint venture structure to deliver architecture and engineering services to federal agencies. Registered in SAM.gov since December 7, 2023, the joint venture combines the complementary capabilities of Larson Design Group and Mason & Hanger to provide comprehensive design and engineering solutions across multiple federal customer bases. The entity leverages specialized expertise in infrastructure design, facility modernization, and engineering delivery to support critical government operations and facility requirements.

The joint venture has demonstrated its capabilities through recent federal contract awards totaling approximately $7 million in delivery orders. Under a $6.99 million firm fixed-price delivery order from the U.S. Air Force Defense Finance and Accounting Service, the joint venture is performing design work in accordance with a Statement of Work dated November 11, 2025, at Tinker Air Force Base in Oklahoma City, Oklahoma, with an ultimate completion date of November 20, 2027. This engagement reflects the Air Force's infrastructure and engineering modernization needs at a major logistics and maintenance hub. Additionally, the joint venture holds a $2,500 minimum guarantee delivery order under the U.S. Army Corps of Engineers' Southwestern Division Architect and Engineering Services contract, awarded January 31, 2025, supporting the Tulsa District through January 30, 2030. Both delivery orders utilize firm fixed-price contract types with no set-aside designations, indicating open competition for these opportunities.

Larson Design Group Mason & Hanger Joint Venture holds a substantial indefinite delivery contract (IDC) award from the U.S. Army Corps of Engineers Tulsa District, valued at $99 million with a 5-year ordering period through January 30, 2030. This multiple-award IDC provides comprehensive architect-engineering services for USACE's Southwestern Division and Tulsa District, encompassing military, civil works, and interagency projects. The contract authorizes a full spectrum of A-E services including program management, data management, project programming and planning, feasibility and concept studies, design standards development, engineering analysis, and design/build request for proposal preparation. Additional services include design of new construction, facility alterations, maintenance and repair, site assessments, geotechnical investigations, environmental studies, cost estimating, value engineering, Building Information Modeling (BIM), and engineering during construction phases. The IDC carries a $2,500 minimum guarantee and no set-aside designation, positioning the joint venture as a capable resource for complex federal engineering and design projects across multiple mission sets and geographic regions within USACE's purview.