Our History

TEM Group started out as TEM Electric in 1999. TEM Electric was a dream of the founder and owner Tom Masterson. Tom developed his passion for electric work from his father, a maintenance electrician at Fort Knox, Kentucky. Tom’s mother was from Panama. Tom’s Hispanic heritage is how TEM Group qualifies as an MBE and DBE.

Tom started the business with longtime friend Rick Davis. In the beginning Tom worked out of the living room of his home. In 2001 they leased an office in Lexington and Pat Abrams came aboard as an estimator. In 2003 they opened a branch office in Louisville, Kentucky. Soon thereafter Tom’s brother Gary Masterson came aboard. In 2005 Louisville became the headquarters and Lexington became the branch office. In 2008, Bill Hoskinson came aboard to head-up the general contracting work for Bechtel at the Richmond, Kentucky Bluegrass Army Depot. In 2009 TEM was named Small Business of the Year for Kentucky by the SBA. Tom Masterson was invited to the White House for a reception with the President.

In 2010 TEM bought the facility at 3560 Bashford Avenue in Louisville, Kentucky where we are we are presently located.
TEM has peaked at 20 million dollars in revenue and 75 employees. We have worked at MacDill Air Force Base in Tampa, Florida, Center Hill Dam in Tennessee and the Dale Carlia Aqueduct in Washington D.C. Louisville Metropolitan Sewer District has been a major factor in the start-up and growth of TEM Group. We have extensive utility work experience. Bechtel and its projects at the Bluegrass Army Depot had a major impact in our growth.

In 2013, the electrical division of Hall Contracting shut its door. TEM Group was asked to complete Hall’s backlog. We completed Hall’s work and were able to pick up key employees, customers and acquire extra equipment. We now have Tom LaCoste & Tom Clark focusing on water and waste water treatment plants. Glenn Gregory who also came from Hall is now heading up our Highway Department.

Our recent expansion and diversification will help TEM Group to continue to prosper in the electrical construction industry.

Key Certifications

MBE        Minority Business Enterprise:   We are certified by the Tristate Minority Supplier    Development Council as a bona fide MBE as defined by the National Minority Supplier Development Council

DBE        Disadvantaged Business Enterprise: We are certified by the Kentucky Department of Transportation as a DBE pursuant to U S Code Title 49 CFR Part 26

MWBE    Minority & Women Business Enterprise: We are certified by the state of Commonwealth of Kentucky as a Minority Business Enterprise

Download Certifications Here:

KY DOT Cert of Eligibility
KY DOT DBE recert thru May 2016
TSMSDC Exp 2015



We are currently prequalified with the following governmental agencies and customers

  • Kentucky Department of Transportation
  • Indiana Department of Transportation
  • Metropolitan Sewer District, Louisville, KY
  • Louisville Water Company, Louisville, KY
  • Bechtel National
  • Walsh Construction, Chicago, IL
  • Zachry Construction Corp, San Antonio, Texas



  • AGC – Associated General Contractors of America
  • ABC – Associated Builders & Contractors
  • IEC – Independent Electrical Contractors
  • DBIA – Design-Builder Institute of America
  • CFMA – Construction Financial Management Association