Verified Healthy Building


The John Buck Co. – Buck Management Group LLC

Verify ID:


Expiration date:

June 21, 2023 - June 20, 2024

Verification Mark

Facility Information

If natural light and sleek technology could morph into a building, 151 North Franklin is it. The 35 story, 820,422 SF office tower is technically advanced, sustainable and forward-looking. Designed by John Ronan Architects, 151 North Franklin is a pioneering place for new ways of working. Its clean and elegant design merges inspiration and business, delivering innovation at every corner. Seamlessly flowing from outside to inside, tenants benefit from a rooftop sky garden, landscaped second floor terrace, and other inspiring amenities, fulfilling the promise that great design is great for business.

Applicable To:

151 North Franklin Street, Chicago, IL 60606

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.

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.