Skip to content

ERA Architects


7 St. Thomas St.

7 St. Thomas St.

En Français >

7 St Thomas integrates a sleek, undulating fritted-glass mid-rise office building designed by Hariri-Pontarini Architects with a block of heritage townhomes. The site inhabits a transitional zone between the retail and corporate fabric of Bloor-Yorkville and the quiet, leafy collegiate campus to the south.

ERA was responsible for full Heritage Consultation services, from heritage planning approvals through design and construction phases. This included documentation, conservation and reconstruction drawings and specifications, design input and coordination for the retention process, protection measures, reintegration with the new structure, and contemporary components like curtain wall systems and green roof.

The late 19th-century three-storey red-brick houses are excellent examples of the Romanesque Revival style.  Heritage conservation work included restoring the masonry, windows, trim, dormers and sloped roofs, seamless integration of the interior spaces between envelopes, and limited interventions to provide modernized assemblies and fire protection. The wood roof forms were precisely recreated with light-gauge steel framing with often minute adjustments to allow for the re-installment of catalogued and restored original exterior trim and detailing.

The entrances at grade necessitated a thoughtful approach to universal accessibility. ERA designed modifications to the original entries that provided passive and inclusive accessibility, while mitigating impact to the heritage character of the buildings.


St. Thomas Commercial Developments
Hariri-Pontarini Architects


  • Architizer A+Awards: Popular Choice: Mid-Rise Office, 2018

Related Projects

The Distillery District Cityscape Development Corporation & Dundee Realty
Bay Adelaide Centre Brookfield Properties
Casey House Casey House