LJB Inc.

LJB Inc., a Miamisburg, Ohio-based civil and structural engineering firm, operates as a prime contractor delivering fall protection system design, installation, inspection, certification, and competent person training services to federal facilities across the civilian and defense sectors. The firm competes full-and-open with no set-aside designations and carries no SBA certifications; it has maintained a federal presence since 1990 and registered in SAM.gov since 2001.

LJB's customer base is concentrated among three pillars: the Smithsonian Institution (20 awards, $2.4 million combined potential value), the Department of the Air Force Materiel Command (19 awards, $10.1 million), and the Department of Defense Washington Headquarters Service (11 awards, $11.4 million). These three account for fifty awards that represent 53% of LJB's recent award count. The top five customers by potential-value ranking — GSA Federal Acquisition Service, DoD Washington Headquarters Service, Air Force Materiel Command, the Smithsonian, and Air Force Air Combat Command — account for 82% of combined potential value. A tension exists between the two rankings: GSA leads on dollars ($13.2 million, 3 awards) through LJB's fall-protection BPA position, while the Smithsonian dominates by award count (20 awards) despite lower per-award value. DoD Washington Headquarters Service ranks high on both metrics, anchored by a $5.5 million single-award IDC awarded March 23, 2026, for Pentagon roof fall protection services including inspection, repairs, and certification covering 1.2 million square feet of horizontal lifeline and beam-and-trolley monorail systems.

LJB places substantial task-order volume against three indefinite delivery vehicles. The Air Force Materiel Command IDC (FA860109D0005) carries 26 task orders worth $4.1 million combined potential value. The Air Force F17CC10017 IDC supports 19 task orders valued at $2.4 million. The F3360103D0018 IDC accounts for 16 task orders at $1.3 million. LJB also maintains a GSA Multiple Award Schedule BPA valued at $4.78 million in the Engineering Services category (NAICS 541330), awarded August 2, 2023, with expiration August 1, 2026; this vehicle has supported at least 16 task orders. Additionally, LJB holds a seat on the Missile Defense Agency's SHIELD multi-domain defense system IDC (January 21, 2026, $151 billion ceiling, through December 28, 2035), though only a single $500 delivery order appears in the current award snapshot.

Recent representative work includes a $128.8 thousand delivery order from the Smithsonian Institution (April 14, 2026) for design and installation of a rolling gantry on the National Museum of American History roof; an $81.4 thousand delivery order from Washington Headquarters Service (September 23, 2025) for roof fall protection system services; a $24.5 thousand Naval Sea Systems Command competent person fall protection training task order in San Diego, California (September 16, 2025); a $103.5 thousand Smithsonian delivery order (June 6, 2025) for fall protection system certification; and a $582.3 thousand Smithsonian delivery order (August 19, 2021) for fall protection installation at Summit, Arizona. The 2021–2024 period shows uneven activity (5 awards in 2022, 8 in 2023, 3 in 2024, 4 in 2025, and 4 in 2026 year-to-date), with 19 awards facing ultimate completion inside the next twenty-four months and carrying combined potential value of $1.8 million, representing recompete exposure.

Service Contract Inventory captures only $582 thousand in invoiced federal service-contract revenue in FY2024 (1.3 FTEs), with no SCI-reportable invoicing in FY2022–FY2023. This narrow SCI footprint reflects that the majority of LJB's federal work is either goods-and-services delivery (fall protection systems hardware and installation), product-focused, or falls below the $150 thousand SCI reporting threshold. Government-paid hourly rates on SCI-reportable service contracts ran at $219.74 per hour across the limited prime-contract sample. SCI reports zero subcontractor hours on prime contracts in the available dataset, and LJB carries minimal subcontractor footprint overall — only two sub awards appear across the source (both 2024–2025 work with Gana-A'yoo Construction Services JV for construction services on Air Force base renovation and tornado-damage repair projects), indicating LJB operates predominantly as a self-delivery firm rather than a teaming prime or feeder to larger contractors. The vendor's 99% prime-to-sub split (135 prime, 2 sub awards) and absence of named major subcontractors confirm a solo-delivery posture.

Primary NAICS concentration sits with Engineering Services (55 awards) and Architectural Services (45 awards); PSC coding reflects design-and-construction emphasis across Architect and Engineering categories, particularly for museums and exhibition buildings (18 awards) and landscaping/interior layout (39 awards), alongside fall protection and specialty trade work. LJB's combined potential value across all 137 awards totals $46.1 million, with $12 million obligated to date (26%), indicating a pipeline of future delivery work across established customer relationships at the Smithsonian, Air Force, and DoD Washington Headquarters Service.

Founded in 1966, LJB Inc. is an employee-owned consulting firm that provides civil and structural engineering, as well as geospatial, safety, health and environmental services. Its diverse expertise, client base and geographies have enabled LJB to serve clients in all 50 U.S. states. LJB's skilled staff hold professional engineering licenses in all 50 states, Washington, D.C., several Canadian provinces and Guam.