As Northrop approaches its centennial in 2029, the University of Minnesota landmark has reached a major milestone: one of the University’s most iconic and historic buildings is now Leadership in Energy and Environmental Design (LEED®) v4.1 Operations + Maintenance (O+M) Gold certified.

Northrop is the first University of Minnesota facility to achieve LEED Gold under this rigorous standard for existing buildings. The certification reflects Northrop’s commitment to honor its historic legacy while building for the future, demonstrating that sustainability is not limited to new construction. Historic buildings can also evolve, improve and lead.

What LEED O+M Gold certification means

LEED O+M Gold certification recognizes excellence in how buildings are operated and maintained over time, evaluating performance across energy efficiency, water use, waste reduction, indoor environmental quality and sustainable purchasing.

Rather than focusing on how a building was originally designed, the certification examines how it performs today through day-to-day operations, maintenance practices and long-term stewardship. Earning this designation reflects Northrop’s strong environmental, social and governance practices and aligns with the University’s commitment to responsible resource stewardship outlined in Elevate Extraordinary 2030, the University’s strategic roadmap.

Years in the making

Northrop’s path to LEED certification was shaped by its extensive 2014 renovation, during which project teams worked closely with the University of Minnesota’s Center for Sustainable Building Research to meet Minnesota’s B3 (Buildings, Benchmarks & Beyond) Guidelines — state sustainable building standards developed at the University’s College of Design.

Those early sustainability measures, combined with ongoing investments in building controls, energy performance and maintenance practices, laid critical groundwork for certification.

The formal LEED certification process began in 2024 and was supported by collaboration among Northrop administration, the University of Minnesota Office of Sustainability, Facilities Management, Capital Planning and Project Management, and Health Safety and Risk Management, along with partners Chartwells, HGA Architects and Northstar Sustainability.

This achievement reflects a shared effort across many teams working behind the scenes to support sustainability in a high-use, multipurpose performing arts venue.

Key Initiatives

• Documentation of operations

  • Purchasing policies

    • Drafted policies which reflect current purchasing practices for office supplies and equipment as well as food
      • Examples
        • 20% of annual food purchase spend will be from locally sourced products
        • 75% of office supplies will meet sustainability criteria 

  • Cleaning procedures

    • Facilities Management’s Custodial Program has implemented a robust green cleaning program using sustainable equipment, products and practices to ensure a non-toxic space with increased safety for sensitive populations.
    • Over 99% of all cleaning products and materials by cost meet LEED green cleaning requirements. 

  • Water

    • Water efficient plumbing fixtures installed during recent renovations save over 24,000 gallons of potable water annually.

  • Waste

    • Over 58% of waste is diverted through organics and recycling programs.

  • Energy

    • 2014 renovations included extensive replacement of mechanical and electrical systems which adhered to high efficiency building standards, ongoing energy management practices which keep an eye on building performance and maintenance, and investments in building controls to enable ongoing and flexible energy efficiency.
      • Energy efficient systems, equipment and lighting installed in the 2014 renovation.
      • An improved ventilation system was added, the building envelope was sealed to prevent air leakage and efficient light fixtures were installed.
      • Robust Operations and Maintenance Plan ensures optimal operations (during event and non-event use).
      • Low-impact refrigerants used in all cooling equipment

• Testing

  • Air quality

    • Occupant survey results: Over 80% of occupants are very satisfied with comfort conditions at Northrop, including lighting, acoustics, cleanliness and air quality.
    • On-site testing during the LEED performance period verified enhanced indoor air quality.

  • Waste audit

    • Found that over 58% of waste is diverted through organics and recycling programs and identified improvements to get diversion over 80%.

  • Customer surveys of building occupants and show attendees

    • Occupant survey results: Over 80% of occupants are very satisfied with comfort conditions at Northrop, including lighting, acoustics, cleanliness and air quality.

  • Location and transportation

    • Around 50% of building users employ alternative modes of transportation.

Why it matters

Northrop plays a unique role on campus and in the broader community. Originally opened in 1929, it is a state historic landmark on the Twin Cities campus. Today, it serves as one of  the University’s primary gathering places for the performing arts, world-renowned dance performances, concerts, academic ceremonies and major civic events. From touring dance companies, musicians and film screenings to distinguished speakers, celebrated authors and prestigious UMN lectures, Northrop offers opportunities for campus and community to connect, learn and engage. The iconic building is also home to the Institute for Advanced Study, Office of Undergraduate Admissions, Office of Enrollment Management and the College of Design Kusske Design Initiative.

As a highly visible, high-use building that welcomes students, families, visitors and touring partners, Northrop reflects growing expectations around sustainability. This certification demonstrates that historic preservation and high-performance operations can coexist.

It also marks the first time day-to-day sustainability measures tied to operations and maintenance at a University building were reviewed and verified by a third party through LEED’s framework.

Looking ahead

LEED O+M Gold certification is not a one-time achievement. It reflects ongoing work.

Even the greenest buildings need regular tune-ups. Through continuous improvement, accountability and long-term stewardship, Northrop is well positioned to maintain high performance as it approaches its centennial in 2029.

Northrop’s achievement also reinforces broader sustainability momentum across the University of Minnesota, where initiatives including zero-waste events, expanded solar power, EV infrastructure and hybrid electric buses continue to advance long-term climate goals.

Historic buildings can honor their legacy while evolving to meet the needs of the future — and Northrop is proving exactly that.