As of January 7, 2016, Commonwealth Cultural Resources Group and its affiliated companies—John Milner Associates (JMA), Coastal Carolina Research, and Sagebrush Consultants— are operating under a new name: Commonwealth Heritage Group, Inc.

This will help all of our offices work more collaboratively and allow us to offer our clients streamlined services with a nationwide footprint. Please visit our web site,, for a full list of services.

We look forward to working with all of you during this exciting new chapter.

Andrew J. Weir, President, Commonwealth Heritage Group, Inc.


Our staff members, office locations, and phone numbers remain the same, but please note the new e-mail addresses below:

  • Contacts for the former JMA offices:

  • Other Commonwealth Heritage Group office contacts:

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    JMA’s architectural and building materials conservation staff joined MTFA Architecture, P.L.L.C. They may be contacted at 3200 Lee Highway, Arlington, VA 22207; telephone (703) 524-6618; or by clicking on the following link: