In 1922, the Indianapolis Home Builders was formed. It is possible that this group is the oldest organized builder group in the United States. On February 22, 1940, the group drafted its first By-laws. The original charter from the National Association of Home Builders (NAHB) was issued to the Indianapolis Home Builders; this was later transferred to the Marion County Residential Builders Association in 1944. In 1969, the name was changed to the Builders Association of Greater Indianapolis (BAGI) to reflect the building activity going on outside of Marion County.
As early as 1926, a show home was built for public viewing by the Association through the cooperative efforts of its membership. The first Parade of Homes was held in 1947 and the first New Home Preview was held in 1956. In 1963 the Association presented its first Home-A-Rama.
Over 500 members strong, The Builders Association of Greater Indianapolis today exists so that members of the residential construction industry and related businesses can conduct their business efficiently and ethically to provide the community with reliable, safe, affordable residential construction accomplished by competent professionals in the industry. The charter jurisdiction of BAGI includes: Boone, Hamilton, Hancock, Hendricks, Johnson, Madison, Marion, Morgan and Shelby counties.