In 1899, the City of Toronto decided to vacate the facility and move to a new city hall located on Queen Street West and Bay Street designed by E. J. Lennox. A Market Commission recommended the old city hall be renovated and turned into a large marketplace. John William Siddall was the selected architect for this project. Siddall decided to demolish the cupola, the pediment, and the side wings. The new steel truss roof was proposed to cover the entire building structure, allowing more open space with a high ceiling and more natural light. The roof is hybrid of arch roof with clerestory. The North Market was also rebuilt at this time and had a similar design to the current South building with late Victorian architecture design. The two buildings were joined with a glass canopy over Front Street. The South building opened in 1902 and the new North building opened in 1904.