Osgoode Hall Justice served, and preserved

Osgoode Hall

Infrastructure Ontario
Toronto, ON

Osgoode Hall is one of the most beautiful buildings in Canada. The construction of the National Historic Site began in 1829, although it was substantially added to and rebuilt in the century that followed. Osgoode Hall serves as a chronicle of architectural styles and the history of justice, distinguished by material and artistic craftsmanship unparalleled in courthouse architecture.

As home to the Court of Appeal, two chief justices and the Law Society, it plays a continuing role in the provincial justice system.


THA worked for fifteen years restoring the building’s interior and exterior, while adapting the site to suit modern safety and security needs, accessibility, technology and operations. Expansive areas of timber structure had to be stabilized, and areas previously uninhabitable were recovered for use. The fine sandstone and brick exteriors were conserved, and roofs were replaced with copper and slate. Mechanical, electrical and life safety systems were threaded through the walls and ceilings.

The historic courtrooms, public areas and chambers were the focus of a comprehensive program of conservation or rebuilding of historic plaster, stained glass, woodwork, mosaic tile, sculpture and furnishings. Each room was designed to incorporate twenty-first century standards of courthouse facility planning and operations, and additions made to accommodate additional use.


The project has won many awards for the quality of its conservation work and the seamless integration of technology within a delicate historic environment.