• Organization TypeWorks & Construction, Service Providers
  • HeadquartersUnited States
  • Founded1995


In 1995, the three Sullivan brothers founded SLS with the goal to uphold integrity in every job, project and action. For more than twenty years, they have helped the company stay true to its mission by providing the highest quality service, while delivering construction projects on-budget and on-time. With an emphasis on general contracting and program and construction management, SLS provides residential and commercial construction services for Federal, state and local governments, as well as a deep roster of private companies. SLS is headquartered in Galveston, Texas, with offices in Houston, New Orleans, New York, Charleston and the Caribbean Basin. Their national presence and their full team of project managers, superintendents and construction professionals allows us to quickly mobilize and service any assignment, no matter the size or location. From governmental housing to remote oilfield locations, SLS customizea their projects to meet the specific needs of clients, easily scaling their team up or down as needed. Whether executing a unique one-off project or a large comprehensive housing program, SLS reach full operating capacity as seamlessly and quickly as possible, providing unmatched and successful results.
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Staff at SLS have experience in


  • monitoring / evaluation
  • development
  • research & development
  • economic policy
  • data management


  • test
  • ec


  • united states
  • pakistan
  • timor-leste
  • nepal
  • south sudan


  • managerial experience
  • business development
  • experience in recruitment
  • international experience
  • with experience in conflict areas

Contact SLS

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Company Offices

  • United States (headquarters)
  • Galveston
  • P.O. Box 17017 Galveston, Texas 77552