Office of the Fire Marshal

CONTACT INFORMATION: Office Hours: 8 a.m.-4:30 p.m., Monday-Friday, Lobby Hours: 7:30 a.m.-3:30 p.m., Monday-Friday
703-246-4800 TTY 711
12099 Government Center Parkway
Fairfax, VA 22035
John Walser
Assistant Chief, Fire Official - 703-246-4753

Fire Investigation Section

Fireman looking through ashesInvestigators collaborating with ATF and on-scene fireman








The Fire Investigation Section's (FIS) mission is to investigate fires, post blast inspections, and environmental crimes in Fairfax County.  We accomplish this through the Commonwealth (§§ 27-30 through 27-31.1) and county (Chapter 62) statutory authority, enforcement of the Statewide Fire Prevention Code, and collaboration with federal, state, and local agencies. Furthermore, our information sharing supports the overall fire prevention mission which includes life safety and community risk reduction activities.

All FIS investigators are trained in a variety of disciplines including, but not limited to, fire and explosive investigations, building code, law enforcement, and environmental crimes.

FY 2019 Fire Causes



2018 & 2019 FHMIS Statistics

Fairfax Virtual Assistant