Ontario Construction News staff writer
The Palm House at Allan Gardens Conservatory in Toronto will reopen to the public tomorrow (May 14), following a major restoration project aimed at preserving one of Toronto’s most iconic heritage buildings.
The $11.3-million restoration was led by Heritage Restoration Inc. (HRI Group), with architectural oversight by Zeidler Architecture and heritage consulting by Architects Rasch Eckler Associates Ltd. (AREA). Engineering work was provided by RJC Engineers and The Hidi Group. Commissioned by the City of Toronto, the project began in October 2022 and reached completion this spring.
Originally opened in 1910, the Palm House—designed by city architect Robert McCallum—is an Edwardian-era conservatory recognized for its 16-sided central dome, a landmark feature that earned it the nickname “The Dome.”
The restoration included the replacement of glass cladding and window glazing, as well as upgrades to ventilation, air quality systems, and accessibility features. Surrounding facilities such as the administration building, public washrooms, and park grounds were also renovated.
Commissioning of mechanical and structural systems began in late 2024 and wrapped up earlier this year. Final steps included replanting garden beds, furnishing interior spaces, and restoring the building’s front grounds.
While Allan Gardens remained open during construction, the Palm House has been closed since work began. Officials say the restoration will help preserve the structure for future generations and improve the visitor experience.
