Skip to content

Topping Out for 20 Mass

May 03, 2022

Interface Engineering recently attended the Topping Out event for Capitol Hill’s newest mixed-use destination at the intersection of Massachusetts Avenue and F Street NW, Washington, DC. The project has LEED Gold, WELL Health Safety Rated and Energy Star certification goals. Interface services include MEP Engineering, Fire/Life Safety, Energy Modeling, Lighting, and Commissioning. Upon delivery in 2023, the project will boast:

  • 183,515 RSF | building top office with dramatic views
  • 271 Key | luxury Royal Sonesta Hotel
  • 13,832 RSF | on-site retail including chef-driven restaurants
  • 14,500 SF | amenities penthouse
Professional Accreditation
Interface Milestone