Alexander Street Baptist Church was founded in by about 20 members from Bond Street Baptist Church. Alexander Street was the first congregation of what was to be many Baptist congregations formed in the next 40–50 years within Toronto from the original Bond Street congregation. The church building, designed in the Gothic Revival style by the architectural firm of Thomas Gundry and Henry Langley, was completed in 1867 and seated 480 people. The $10,500 cost of its construction was largely met by a donation from Thomas Laily who owned a wholesale clothing business in Toronto. Laily was also a major contributor to the church's running expenses over the years. George McNutt was the first pastor of Alexander Street Baptist Church.. Andrew Heber Munro became its second pastor in 1869 and remained in his post for seven years, leaving to take over the pastorship of the First Baptist Church in Montreal. Following Munro's departure, the church was without a pastor for year until the arrival of his successor, Joshua Denovan in 1878 who served until 1893 after the congregation had relocated. According to John Ross Robertson writing in Landmarks of Toronto:
The coming of Mr. Denovan at once infused new life into the church, and it reconstructed itself and entered upon a career of remarkable activity and, in one sense, has done a work that no other church in this city has accomplished. The Alexander street church occupies a unique position on the mission work, and has gained for itself a most enviable reputation in this respect. With a spirit of self-sacrifice, distinctively Christian and yet exceptional among churches, it has given away one dollar for missions for every dollar spent for its own upbuilding. In other Baptist churches $13 is used for the home church to $1 for missions, and in others $7 to $1.
The church sponsored a mission school outreach at Dovercourt Road Baptist Church which began in 1879 and organized as a congregation in April 1881. A building was eventually opened for use in September 1889 at the north-west corner of Dovercourt road and Argyle street. An outreach was also begun at 148 Tecumseth Street south , which is today occupied by the Ukrainian Baptist Church congregation. In 1888 the Alexander Street congregation experienced growth and decided to relocate and build a new church at Jarvis and Wellesley Streets. The new church building opened in 1889 and was renamed Immanuel Baptist Church. The Alexander Street church building was sold to the Anglican Church in 1888. It was demolished in the mid-1950s when the south side of Alexander Street was razed to make way for the City Parkapartment complex.
