Court Facility Planning Team

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The Court Facility Planning Team team is a part of the NCSC Court Consulting Services (CCS), headquartered in Denver, Colorado.  The specialized and nationally recognized subject experts on the NCSC courthouse planning team capture unique court characteristics, enhance operation practices with visionary solutions, quantify the projected future planning requirements, and transform them into an operationally-based building program and planning document.

List of completed projects.
Chang-Ming Yeh
Principal | Court Facility Planner

Chang-Ming has been a judicial facility planner with the National Center since 1987 and worked extensively in the area of facility and security planning for state and local court systems.  He is the author of the Americans with Disabilities Act Court Facility Reference Guide (NCSC 1992).  He is also the co-author of The Courthouse: A Planning and Design Guide for Court Facilities (NCSC), 1991.

Chang-Ming co-authored of the Colorado Judicial Facility Standards for the Colorado Supreme Court in the late 1990s.  He served as a committee member on the Access Issues Task Force, National Court Reporter Association, and as a project advisory committee member of Strategies for Court Compliance with the Access Provisions of the Americans with Disabilities Act, American Bar Association.  Chang-Ming received a B.S. in Architecture and Urban Planning from Chinese Culture University, Taiwan; an M.S. in Architecture Engineering, and an M.S. in Computer Science from the University of Kansas.


David Sayles
Analyst | Court Facility Planner

David is a graduate of the University of Colorado, Boulder, and holds a Bachelor's degree in Environmental Design and Panning.  At the NCSC, he has 15 years of experience assessing court facility needs and assisting in the delivery of court facilities planning projects.

As a planning analyst, David specializes in the statistical and data analysis of court workloads and court systems.  He assists the court in projecting their future staffing needs by summarizing statistical findings and conducting surveys. The information David collects and summarizes is used to determine space needs and requirements in the courthouse.


Allison McKenzie, AIA, LEED Green Associate
Senior Architect  |  Court Facility Planner

Allison is a Registered Architect and Senior Court Planning Consultant at the NCSC.  She is a member of the American Institute of Architects and holds a Bachelor of Architecture from the University of Arkansas, 1997.  Before joining the National Center, she worked as an Architect on master planning, programming, planning, and design projects of various types.

In 2017 she began working with the NCSC as a Senior Architect and court facility planner.  Allison has the unique perspective of having worked as an Architect on courthouse projects and as a consultant to Architects, the court, and county governing agencies.  Allison can provide architectural design peer reviews, conceptual and schematic design drawings, space programming, building code and zoning analyses, building assessments, and facility master planning.

Her projects have been featured in publications including Architectural Record, Architecture and Urbanism, and Interior Design magazines.  Most recently, Allison co-authored What will shape the future of Courthouse Design?, which will be published in the NCSC's Future Trends Publication.


Nathan Hall, RA, LEED AP BD+C
Principal  |  Court Facility Planner

Nathan is a registered Architect and Principal Court Consultant at the National Center for State Courts. Since joining the National Center in 2008, he has been involved in over 100 court facility projects for state and local courts across the nation.

At the National Center, Nathan provides expert consultation and technical assistance to state and local courts, local and county governments, and private industry design firms on courthouse facility planning and design projects. Areas of expertise include operational assessment and strategic planning analysis, conceptual and schematic design development, architectural design peer review, court security, and court technology requirements analysis.

Nathan provides training nationally to professionals regarding courthouse planning and design as well as courthouse security and is the primary editor of the NCSC publication, Steps to Best Practices for Court Building Security.  He has published multiple articles on the subject of innovation in courthouse planning appearing in Courts Today and in the NCSC Future Trends series.