Tsontos, Michael M., S.A.

Tsontos, Michael M., S.A. is a Greek-based technical services company headquartered in Chania with a division operating in Bucharest, Romania (Michael M. Tsontos SA Chania Sucursala Bucuresti). The company specializes in construction, engineering, and facilities support services for U.S. military installations throughout southeastern Europe, with particular expertise in infrastructure modernization, electrical system upgrades, and comprehensive facilities management. Registered in the System for Award Management (SAM.gov) since May 9, 2008, and maintaining an active federal contractor status, Tsontos has established itself as a key regional contractor supporting U.S. Department of Defense operations and infrastructure requirements across Greece and Romania.

Tsontos has provided an extensive range of construction and facilities services through federal prime contract awards totaling millions of dollars since 2021. The company's project portfolio demonstrates comprehensive capabilities across multiple service categories, including base-wide fire reporting system design and installation ($1.69 million), generator repair and maintenance ($2.97 million through April 2026), distributed energy system and substation construction ($1.5 million), warehouse reconstruction ($949,483), pre-engineered metal warehouse construction at Marathi Pier ($5.31 million), and numerous electrical infrastructure projects including fiber optic installations, ballistic glass replacement, and electrical assessments. Beyond major construction initiatives, Tsontos has executed routine facilities maintenance and repair work including door and frame replacements, stormwater system repairs ($474,475), street lighting fixture replacements ($336,084), HVAC system reconfigurations ($366,231), parking lot reconstructions ($290,692), structural repairs and testing, corrosion control services, fall protection measures, and hazardous waste upgrades ($697,744). The company's customer base spans multiple Department of Defense agencies, including the Navy Installations Command, Naval Facilities Engineering Command, Naval Supply Systems Command, Defense Logistics Agency Energy, Air Force Air Combat Command, U.S. Special Operations Command, and the Army European Command. All prime contract awards have been structured as firm fixed-price delivery orders issued under indefinite delivery/indefinite quantity contract vehicles, with no small business set-aside designations applied. Tsontos has also served as a subcontractor under Serco Inc. prime contracts for services awarded in July and October 2023.

Tsontos currently holds four federal contract indefinite delivery vehicles providing substantial ordering capacity for future task orders. The company's primary IDIQ is a $75 million multiple-award construction contract awarded by Naval Facilities Engineering Command on September 17, 2025, with a ceiling value extending through September 16, 2030, supporting sustainment, restoration, and modernization projects at Naval Support Activity Souda Bay in Chania and additional locations including the Malaxa Communication Site, Marathi Greek Navy Base, NATO Hellenic Navy Ammunition Command Sites, and NATO Petroleum, Oils, and Lubricants Depot Marathi. A second vehicle is the $40 million single-award Job Order Contract awarded by Naval Facilities Engineering Command on October 7, 2021, with completion through October 1, 2026, providing comprehensive construction and facilities support services at Naval Support Activity Souda Bay across categories II, III, and IV work with a $5,000 minimum guarantee. The company also holds a $49 million multiple-award indefinite delivery contract with the Army European Command for design-bid-build construction services supporting U.S. defense operations in Greece, awarded September 16, 2022, and extending through September 15, 2027, with a $2,000 minimum guarantee. Additionally, Tsontos was awarded a $250 million multiple-award indefinite-delivery/indefinite-quantity contract by the Army European Command on March 3, 2021, covering general renovation, new facilities, force protection, utilities, and incidental construction work in Romania with a five-year base period through March 3, 2026 and a $2,500 minimum guarantee order. These four contract vehicles, collectively valued at $414 million, position Tsontos as a major regional contractor with substantial capacity to execute infrastructure, construction, and facilities projects across multiple U.S. military installations in southeastern Europe.