Government of Canada Public Works

Millhaven Penitentiary is a maximum institution serving 400+ male offenders. It opened in 1971 and was built to replace Kingston Penitentiary, another maximum security prison (now closed). A riot at the Kingston Penitentiary forced Millhaven to open prematurely.

The Millhaven facility is in Bath Ontario, near Kingston and, together with a lower security prison, occupies 640 acres. Millhaven also comprises the federal intake assessment unit, and is one of two identically-designed institutions; the other is in Sainte-Anne-des-Plaines, Quebec.

This project represents the fourth of four residential-style living units on site. It created 96 new cells at the facility. HH Angus and Associates reviewed the federally-approved standard plans for prison housing and designed adaptations unique to this site, in order to permit construction of the new facility within the existing compound.

HH Angus conducted a review of the electrical infrastructure, and reworked mechanical loads to suit new climatic conditions. As well, we updated documents to ensure compatibility with current ASHRAE standards.