ISO Ratings


Current ISO Ratings for Fairfax County:

  • ISO Public Protection Split Classification: 1/1Y *     
  • ISO Statistical Territorial Multiplier: .950 **

* In 2014, Fairfax County was evaluated and re-graded from 3/9 to 1/1Y in the ISO Public Protection Classification system. This designation is not considered in current statistical grading.

** ISO statistical evaluation for commercial properties has as one component the territorial multiplier, derived from statistical grading. This method analyzes loss cost for jurisdictions. In Virginia, only four areas are statistically graded: Norfolk, Richmond, Virginia Beach, and Fairfax County. In statistical grading, these four localities are rated against the “balance of the state” which is given the index value of 1.0. Less than 1.0 means relatively less loss cost, while greater than 1.0 means relatively greater loss cost.

For more information about the ISO and the Public Protection Classification (PPC) Program, please visit ISO Mitigation Online.


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Fairfax County Fire and Rescue Department
Office of the Fire Marshal
10700 Page Avenue
Fairfax, Virginia 22030
Telephone: 703-246-4800
Fax: 703-691-0209
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Fairfax County is committed to nondiscrimination on the basis of disability in all county programs, services and activities. Reasonable accommodations will be provided upon request. In addition, materials such as forms and publications may be available in alternate formats. To request reasonable ADA accommodations or materials in alternative formats, call the Office of the Fire Marshal at 703-246-4803 (TTY: 711 or 1-800-828-1120) or write us at the following address: 10700 Page Avenue, Fairfax, VA 22030.


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