41 River Street. Photo Credit: Michael Muraz
41 River Street. Photo Credit: Michael Muraz

This project won the Toronto Urban Design Award (TUDA) for Best Urban Infill Project 2023. It includes 27 residential apartments and three at-grade commercial suites. The building successfully achieved the Toronto Green Standard Tier 2, Version 2 requirements and has also achieved Wired Score Gold certification. Smart building technology includes an electric car share exclusive for residents, Bluetooth and remote access door locks, remote fire, carbon dioxide (CO2) and leak detection, utility monitoring from your phone, and fun items such as calling the elevator from your couch. The building’s sustainability elements, such as geothermal heating and cooling, promote occupant well-being while maximizing energy and water performance. The building is 100 per cent electric and therefore does not contain any gas line connection whatsoever.

  • Total Gross Area (Size): 30,000 square feet
  • Building Type: Rental building with commercial uses at grade
  • Building Location: Corktown District, Toronto (41 River Street)
  • Project Website
  • Energy Savings: More than 25 per cent savings versus Model National Energy Code for Buildings

This Toronto Green Standard Tier 2, Version 2 building includes:

Bike Storage

  • Indoor and outdoor bicycle parking

Electrical Vehicle Charging Infrastructure

  • Multiple charging stations provided for hybrid and electric vehicles

Green Roof and Heat Island Reduction

  • A green roof area combined with high-albedo terrace and at grade pavers and roof to reduce the urban heat island effect and manage stormwater onsite

Water Efficient Fixtures and Fittings

  • Low-flow plumbing fixtures were selected for installation to reduce potable water consumption by more than 30 per cent

Renewable Energy Generation

  • Geothermal heating and cooling

Energy Efficient Lighting

  • Efficient light emitting diode (LED) fixtures
  • Occupancy sensors in the amenities and support areas

Energy Efficiency

  • The project achieved a 25 per cent improvement above the Ontario Building Code and includes Energy Star appliances.

Energy Recovery

  • Punch windows with a brick façade created an excellent air-tight building envelope resulting in very low heat loss characteristics, reducing heating and cooling requirements for the building.

Building Developer/Owner

Percy Ellis

Design Architect

Studio JCI

Executive Architect

Brander Architecture

Landscape Architect

Land Art Design

Sustainability Consultant


Mechanical Engineer


Structural Engineer

Atkins Van Groll

Electrical Engineer

e-Lumen International

Smart Building Technology