The entire undertaking took three years to complete (1877 - 1880), helped in part by a call to all Church of Latter-Day Saints' (LDS) members to dedicate at least one day of work towards the project. However, the building's dedication did not occur until two years later, in 1882, under the direction of LDS President Joseph F. Smith. The Assembly Hall became the second permanent structure still standing on Temple Square after the Tabernacle, completed in 1867. It served as an alternate location for many Church meetings including General Conference of the Church.
Structural weaknesses of the building's tower and roof trusses forced the LDS church to engage in a comprehensive renovation project of the Hall between 1979 to 1983. As well, the project including the addition of a new 3,489 pipe organ and hundreds of small speakers; the refinishing of all the pews and floors; and the replacement of the twenty-four spires with fiberglass moldings.
Today, the Assembly Hall serves as an overflow facility for General Conference of the Church, held twice per year. It also serves as the primary location for the Temple Square Concert Series held on Friday and Saturday nights throughout the year, featuring local and international artists.