The Sully District was created after the 1990 census showed dramatic growth in western Fairfax County. Frey was elected in 1991 as the first Sully District Supervisor, and was re-elected in 1995, 1999, 2003 and again in 2007. Since being elected to the Board of Supervisors, has represented Fairfax County on the Washington Metropolitan Council of Governments' Transportation Planning Board and the Environmental Policy Committee. Frey is presently the County's representative to the Council of Governments' Development Policy Committee. He is regarded by many as one of the most knowledgeable officials in Virginia on land use and development issues and has chaired the Board's Development Policy Committee since 1992. He has been a member of the Executive Committee of the Dulles Area Transportation Association (DATA) since 1992, and served three years on the Inova Health Care Services Board and the COG Committee on Noise at National and Dulles Airports.
Frey has lived in Fairfax County for the last 29 years and has been a homeowner in the London Commons community of Centreville for 23 years. A 1983 George Mason University graduate with a Bachelors Degree in Government and Politics, Frey was selected as one of the Outstanding Young Men in America that same year. He is also a graduate of Leadership Fairfax, the premier leadership development program in Northern Virginia.
Frey has been involved in a variety of community activities. He is a charter member of the Burke Rotary Club. For more than ten years he coached youth basketball and baseball for both the Springfield Youth Club and the Southwest Youth Association. Issues affecting our youth remain one of Frey's top priorities, and he has been a strong supporter of youth athletics. During his four terms in office Frey has traveled overseas as a representative of local government officials. He was part of official delegations of local and state representatives that visited Israel and Switzerland in 2000 and 2001. In 2004, Frey participated in a pilot program in Cambodia sponsored by the International Republican Institute. He worked with IRI to develop and present a program to several commune councils elected in the first-ever local elections in Cambodian history.