In the 80s, Heath not only fabricated one of the first major bank conversion projects (600 locations) and began developing its program management skills to better service multi−location accounts. By the end of the century, Heath and Company had plants and offices throughout the country. During the late 80s, Federal Sign acquired several smaller companies, including Melweb in Florida and Sign Systems, Inc., (SSI) in Las Vegas. The company’s now national presence enabled it to successfully manage large custom projects such as sports stadium scoreboards, major casino signs, and theme park signage. Additionally, its geographic positioning was well suited to managing significant national and international multi−location projects for retail, corporate ID, and hospitality clients.

In 1996 a private equity group acquired Heath, and Ken and Diane Hendricks were among its investors, becoming its majority owners in 2001. As the century turned into the 21st, a spin-off of Federal Sign from Federal Signal Corporation was announced, and the sale of Federal Sign to Ken and Diane Hendricks was finalized on April 30, 2003. The Hendricks were significant private investors in several companies, the largest holding being ABC Supply, a distributor of construction and building materials. With the purchase of Federal Sign, the Hendricks combined the two companies to create privately held Federal Heath Sign Company, LLC. Over the next three years, Federal Heath acquired select assets and hired former employees of Zimmerman Sign (2005) Sign Strut Milwaukee (2006). Ken Hendricks passed away after a tragic accident in December 2007. In 2015, Federal Heath acquired Duracolor, LLC and Advance Graphic Systems' select assets in 2019, which added printed graphics to its capabilities. Today, Diane M. Hendricks Enterprises is the single owner of Federal Heath Sign Company.