Verified Healthy Building


KBS Realty Advisors

Verify ID:


Expiration date:

September 06, 2021 - September 05, 2022

Verification Mark

Facility Information

Commonwealth, 421 SW 6th Avenue, Portland, OR 97204 

Applicable To:

See Address Above

Marketing Claim Verified by UL Solutions

Verified Healthy Building for Indoor Air

Verification Method

UL’s Healthy Buildings Verification Mark for Indoor Air demonstrates that indoor spaces provide healthy indoor air quality (IAQ). It shows a commitment by building owners and managers to create and maintain indoor environments that support tenant health, well-being and comfort, backed by UL’s globally recognized expertise in IAQ and building health. These buildings meet rigorous performance criteria and have policies and plans in place for continual advancement of IAQ. To achieve the UL Healthy Buildings Verification Mark, spaces underwent a desktop audit and on-site visits that include visual inspections and performance testing to evaluate a range of building conditions. The program includes an annual comprehensive assessment coupled with surveillance at the mid-year point. The IAQ testing requirements verify that the building air meets rigorous standards. These standards are aligned with industry-recognized, third-party organizations such as the Environmental Protection Agency (EPA), the National Institute for Occupational Safety and Health (NIOSH), the World Health Organization (WHO) and the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), among others. All laboratory testing and analysis methodologies are informed by the EPA Compendium of Methods, ASTM D5197 and TO-17 for air sampling, and EPA methods.

About the Company

Designed by world renowned architect Pietro Belluschi, the Commonwealth Building offers a place rich in history and achievements coupled with modern and creative tenant space. From its early history, the building was intended to highlight the best aspects of modern design and innovation, making it a place for the most distinguished and discerning tenants. Today, the Commonwealth Building is widely recognized as the country’s first modern skyscraper and the first international style office building erected in the United States and has been an inspiration for those that came after. Standing at 14 stories, the Commonwealth Building pioneered several innovated features. The building was one of the first glass box towers ever built, the first sealed and air-conditioned building, and the first to utilize a curtain wall or non-structural skin, along with aluminum and glass double-glazed window panels. In 1976, the building was officially recognized on the National Registry of Historic Places, and in 1982, the Commonwealth Building received an award from the American Institute of Architects (AIA), in recognition of it being “a masterpiece of aesthetics, technology and engineering.” Why People Love this Building More than $13.6 million was invested in tenant improvements, shared amenities, and capital expenditures in recent years, allowing Commonwealth to offer a best-in-class tenant experience. Amenities include a roof top deck with views of the city, building conference room, tenant lounge, on-site Management Office, bicycle storage, a fitness center and locker rooms. The building fronts the Sixth Avenue transit mall providing tenants with convenient access to numerous transportation options, hotels, local restaurants, shopping, and more. Modern styling, proximity to amenities, and a solid foundation continues to build on this legacy of inspiration for the next generation of tenants.

What is UL Verification?

UL Verification is an objective, science-based assessment that confirms the accuracy of marketing claims. Our independent assessment process scrutinizes the validity of specific advertising or promotional statements, giving you a way to separate verified fact from fiction.