The York County Administrative Center, known as the York County Court House for over 100 years, is now the City of York's first certified green building. In 2005-2006 the building was adaptively reused and converted from a courthouse into a government office building. Many environmentally-friendly "green" features were incorporated into the project, which was designed by local firms NuTec Design Associates, Inc. and JDB Engineering, Inc. The project achieved a rating of "Certified" from the U.S. Green Building Council, a non-profit organization committed to expanding sustainable building processes.

With this certification, the York County Administrative Center has several distinctions:

• First LEED Certified building in the City of York
• First LEED Certified office building in York County
• First LEED Certified historic building in York County

The project has earned many accolades for the County and companies involved with the renovation, including two national awards ("Project of the Year - Historic Renovation" from the American Public Works Association and "Phoenix Award" from the Associated Builders & Contractors) and several regional awards ("Energy & Atmosphere Award" from the Central PA Green Building Association, "Preservation Award" from Historic York and "Award of Excellence" from the Keystone Chapter, Associated Builders & Contractors).