sustainable design

MGM National Harbor's Recruitment and Training Facility

The former Thomas Addison school in Oxon Hill, MD is now home to MGM National Harbor’s Recruitment and Training Facility.  This 25,000 square foot building in Oxon Hill, MD was redesigned to LEED v4 Gold standards by Arel Architects of Temple Hills.  Encore has provided LEED documentation services for the project.  Sustainable features like low-flow plumbing fixtures, no potable water used for irrigation, and installing charging stations for electric vehicles have all aided in helping this building earn points towards its Gold certification goal.  The majority of the products in the building are made from products with recycled content and by manufacturers that have responsible production practices.  In addition, the reuse of the existing building materials and fenestration also provided a boost in points and creating well day-lit work spaces. The adapting of the former Thomas Addison School as the MGM National Harbor Recruitment and Training Facility demonstrates the advantage of reusing buildings. 

Casa de Maryland

Langley Park, MD

The restoration of the McCormick-Goodhart Mansion turned a badly damaged, vacant, historic property into a thriving Multicultural Center that serves the immigrant community. The construction work included restoration of exterior and historic interior spaces, adaptive use of service and storage areas, and an underground addition.  This required work on every part of the existing building: site work, structure, finishes, and mechanical, electrical and plumbing systems.

We strategically included sustainable features in the project without destroying the building’s historic character. The architect helped obtain historic tax credits to fund 60% of this project. All work met or exceeded the Secretary of the Interior’s Standards, and was approved by the National Park Service, state and the county agencies.

The project has Gold LEED certification from the US Green Building Council.  The extensive use of green features is saving energy and water, and reducing pollution.

Received the Maryland Historic Trust Project Excellence Award, the Prince George’s County Historical Society St. George’s Day Award and the J. Timothy Anderson Award for Excellence in Historic Rehabilitation, Most Innovative Adaptive Re-Use.


2013 Altrustic Project of the Year- USGBC MD

2012 Historic Preservation Design Excellence Award of Honor - AIA VA Society

2012 Institutional Award - AIA Potomac Valley Chapter

2011 Project Excellence Award - Maryland Historical Trust

2011 Award for Restoration - PG County Historical Society St. George's Day Award