Washington, DC

Department of Justice Offices at Constitution Square

Scope of Services
LEED Enhanced Commissioning

Extending a full city block, Constitution Square in Washington, DC, is a dynamic mixed-use development with a commanding presence at the center of the City’s vibrant NoMa neighborhood, just north of Union Station and the Capitol Building. In 2015, the U.S. Department of Justice signed a lease for the buildings at Three and Four Constitution Square in what is believed to be the biggest GSA lease in the District in the past 15 years.

2RW Project Case Study Main Image

Since 2011, 2RW has been providing LEED Enhanced Commissioning for all phases of this project for Three and Four Constitution Square, including core and shell and tenant improvements. Our commissioning process focuses on key systems and assemblies including:

  • HVAC systems and controls
  • Domestic hot water systems
  • Automatic lighting controls
  • The offices are served by water-source heat pumps and dedicated corridor ventilation, and domestic hot water is centrally generated and distributed.
  • 2RW’s commissioning authority clarified the mechanical, electrical and plumbing engineering design intent and guided the construction team to change the condenser water pump system from constant to variable flow for an estimated annual energy savings of more than $13,000 each year.
  • 2RW was also able to identify inefficiencies in the bathroom fixtures which was estimated to save more than 200,000 gallons of water per year.
Scope of Services
LEED Enhanced Commissioning

OWNER: Stonebridge Associates, Inc.

TIMEFRAME: 2011 – 2018

SIZE: 840,000 SF

COST: $49 million

  • Increased comfort level for facility occupants, accomplished through new energy-efficient environmental control and ventilation systems.
  • Improved indoor air quality with the introduction of fully tempered and treated outside air ventilation.
  • An enhanced learning environment created by incorporating new, high-efficiency lighting strategies and modern media upgrades.