Verified Healthy Building


The Lenkin Company

Verify ID:


Expiration date:

September 27, 2021 - September 26, 2024

Verification Mark

Facility Information

1625 Massachusetts Avenue NW, Washington, DC 20036 

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

1625 Massachusetts Avenue is prominently located at the northeast corner of Massachusetts Avenue and 17th Street along Washington, DC’s Embassy Row. Developed in 1972, and redeveloped in 1995, this building offers tenants 117,000 square feet of rentable office space and three levels of below-grade parking. In addition to the 1995 redevelopment, 1625 has undergone an extensive tenant improvement program that includes renovations of multitenant lobbies, restroom remodels, and the installation of energy saving technologies throughout the building resulting in LEED O&M Gold certification in 2018. Occupants at this building also enjoy access to a state-of-the-art fitness and conference center. The prime location in Washington’s Central Business District, in combination with the two-story lobby, Italian marble floors, and polished brass accents make tenants and visitor alike feel welcome.

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.