It is a branch of the Ontario Superior Court of Justice and is mostly used for criminal trials, but also family law matters.
Courtrooms on the main floor are used primarily for family law matters, while courtrooms located above the ground floor are primarily used for criminal matters, but, in rare cases, may be used for civil proceedings, especially where a litigant is in custody and must attend in person, or where someone may be subject to imprisonment in light of a finding of contempt, due to the civil court facilities located in other nearby buildings, such as the Canada Life Building, not having facilities to house inmates.
The building was designed by architect Ronald A. Dick, who described its form as one of "dignity and convenience.
There is a tunnel connecting the building to nearby Osgoode Hall, although its use is restricted to staff.
[3] It was one of the last large complexes in Ontario created with local Queenston limestone.