Slsco, LTD.

Slsco, LTD., doing business as S L S, is a for-profit general contracting and construction management firm headquartered in Galveston, Texas, that has been registered in SAM.gov since February 2009. The company specializes in delivering complex federal infrastructure and construction projects across multiple mission areas, including border security infrastructure, military facility development, disaster response, and emergency services. With a partnership or limited liability partnership structure, Slsco has established itself as a premier federal contractor capable of executing large-scale, geographically dispersed projects valued in the hundreds of millions of dollars for federal agencies across the Department of Defense, Department of Homeland Security, and other federal entities.

Slsco's federal prime contract portfolio demonstrates substantial expertise across diverse construction and infrastructure services. The company has executed major projects including a $462.4 million definitive contract with Naval Facilities Engineering Command for design and construction of an aircraft parking apron at Royal Australian Air Force Base Darwin, Australia, completed in May 2028; a $353.9 million delivery order from Customs and Border Protection for design and construction of 30-foot-tall bollard barriers with in-ground foundations in Rio Grande City, Texas; a $99.9 million delivery order from Customs and Border Protection for border infrastructure construction and design of a double swing gate; and a $41.8 million delivery order from Naval Facilities Engineering Command for design-build military construction projects in Guam. Additional significant awards include a $28.1 million firm fixed-price definitive contract from Naval Facilities Engineering Command for early site work preparation and site clearing at Barksdale Air Force Base in Louisiana, encompassing 53 acres of clearing, grading, drainage, environmental remediation, and utility work. The company has also received multiple smaller task orders and minimum guarantee delivery orders valued between $250 and $723,387 from agencies including Immigration and Customs Enforcement, Naval Sea Systems Command, Army Corps of Engineers, and Navy Installations Command. All of Slsco's prime contract awards reflect competitive selection without small business set-aside designations, indicating successful competition in unrestricted federal procurement processes. The company has served as a prime contractor and has received at least one subcontract award from KBR Services, LLC for turnkey self-service laundry services in May 2025.

Slsco maintains an extensive portfolio of federal Indefinite Delivery Vehicle contracts that position the company as a key vendor for ongoing federal construction and support services. The company was recently awarded a $20 billion Worldwide Expeditionary Multiple Award Contract-Territorial Integrity of the United States (WEXMAC TITUS) by Naval Supply Systems Command effective October 1, 2025, through December 31, 2029, providing expeditionary support services including humanitarian assistance and disaster relief, contingency operations, lodging, logistics, water-based operations, and Defense Support of Civil Authorities across the Continental United States and Alaska. Slsco also holds a $15 billion Comprehensive Construction and Engineering Multiple Award Task Order Contract from the Air Force Civil Engineer Center awarded September 30, 2025, through September 29, 2030, consolidating regional and worldwide engineering and construction services on a worldwide basis with both small business set-aside and full and open competition task order structures. The company was awarded a $15 billion Design-Build Multiple Award Construction Contract from Naval Facilities Engineering Command Pacific on September 10, 2025, through September 9, 2033, supporting military construction projects in Guam and other Pacific areas. Additional significant IDVs include an $8 billion unrestricted Design-Build/Design-Bid-Build contract from Naval Facilities Engineering Command for construction services in Hawaii and Wake Island awarded June 12, 2025, through June 11, 2033; a $7 billion multiple-award Indefinite Delivery Vehicle from the Army Corps of Engineers Galveston District for design-build and design-bid-build horizontal construction services through April 8, 2033; a $4.1 billion Border Infrastructure IDV from Customs and Border Protection with multiple delivery orders issued through July 17, 2028; a $990 million Indo-Pacific Multiple Award Construction Contract from Naval Facilities Engineering Command Pacific for design-build construction services across the Indo-Pacific region through April 23, 2033; a $45 million single-award contract from Army Corps of Engineers for emergency temporary roofing repair services in Hawaiian Islands through May 31, 2028; and a $49 million MATOC from Army Corps of Engineers for construction requirements in Central America through July 21, 2026. The company also holds a $19.7 million Indefinite Delivery Contract from Immigration and Customs Enforcement for medical-related services for aliens in ICE custody through May 16, 2027, and a multiple-award Basic Ordering Agreement from the General Services Administration Federal Acquisition Service through December 31, 2026. These diverse IDVs collectively represent over $60 billion in procurement vehicles, demonstrating significant capacity and federal government confidence in Slsco's ability to deliver construction, infrastructure, and specialized support services across multiple agencies and mission areas.