Verified Healthy Building


The Lenkin Company

Verify ID:


Expiration date:

October 12, 2021 - October 11, 2024

Verification Mark

Facility Information

5101 Wisconsin Avenue NW, Washington, DC 20016 

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

Located just blocks away from two Red Line Metro stops (Friendship Heights and Tenleytown), 5101 Wisconsin Avenue is a 5-story, 60,000 square foot office building with two levels of private, below-grade parking. The building is situated within walking distance of shops and restaurants, as well as all the amenities of Mazza Gallery, the Shops at Wisconsin Place, and the Chevy Chase Pavilion. Originally built in 1968, 5101 underwent significant improvements from 2007 to 2012, including updates to the restrooms and the main lobby and the recent installation of a solar hot water system.

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.