Formerly McMaster Hall as part of the Toronto Baptist College (what would later become McMaster University), the building was completed in 1881. The Royal Conservatory of Music moved into the building in 1962.

The building was designated under Part IV of the Ontario Heritage Act in 1976, and was formally recognized as a National Historic Site of Canada in 1995

A proposal for a Master Plan for this building won a Canadian Architect Award in 1991, which was eventually adapted in the addition of the TELUS Centre for Performance and Learning. The addition won a Canadian Architect Award of Excellence in 2005, and was completed in 2009.

The main portion of the building facing Bloor Street West was renamed Ihnatowycz Hall in 2005, following a donation made by Mr. Ian Ihnatowycz and Dr. Marta Witer to support the revitalization of the historic building.

• Architect - KPMB Architects - Bruce Kuwabara, Thomas Payne, Marianne McKenna and Shirley Blumberg   <-- More buildings by this architect.
• Architect - Burke & Horwood  <-- More buildings by this architect.
• Architect - Langley, Langley and Burke  <-- More buildings by this architect.