Applied Development Economics, Inc. (ADE) is a consulting firm specializing in economic planning and development services. Since its founding in 1985, the firm has established a distinguished body of work resulting in tangible benefits for its clients. ADE's base of private- and public-sector clients includes government agencies, economic development organizations, foundations, businesses, and private investors.

T. Y. Lin International/CCS (formerly CCS Planning & Engineering, Inc.) Since its founding in 1989, T.Y. Lin/CCS has become a leader in the planning and design of surface transportation infrastructure. CCS has evolved from a one-person traffic engineering firm to a 60+ person firm with capabilities in traffic engineering, intelligent transportation systems, transportation planning, civil engineering, structural engineering, plus construction and program management.

VESTRA Resources, founded in 1988, is a privately held corporation that specializes in geographic information systems (GIS) consulting, analysis and map production services, and GIS product integration and sales. VESTRA's staff is experienced in applying GIS technology for agriculture, resource management, transportation, earth sciences, state and local government, and conservation.

To complete the study, the Research Team used data from the U.S. Census, Cambridge Systematics, Inc., Minnesota Implan Group, California Association of Realtors, DataQuick Home Sale Price Trends, and California Department of Transportation.