The home office of Gertrude Gardner Realtors, known today as Gardner Realtors, is located at 3332 North Woodlawn Avenue in Metairie, Louisiana. As of 2015, 800 realtors in 24 offices make up Gardner Realtors.
Gertrude Gardner founded her company on the Golden Rule and opened her first real estate office in 1943. Seventy years later, Gardner Realtors ranks in the top 1 percent of all real estate companies worldwide. It services the Metro New Orleans area as well as greater Baton Rouge and the Mississippi Gulf Coast region. The company represents both residential and commercial properties, and it offers corporate and relocation services and asset and property management.