Office of the Fire Marshal

Fairfax County, Virginia

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

TTY 711

12099 Government Center Parkway
Fairfax, VA 22035

John Walser,
Deputy Fire Chief, Fire Official

Letters to Industry

This page provides a compilation of Letters to Industry (LTI) which are posted within their respective areas throughout the Office of the Fire Marshal website. To subscribe to these letters, visit the Email Subscriptions page.


July 2022 - Fire Protection Equipment Systems 

Fire Protection Equipment Systems - Construction Permit Requirements

May 2022 - Fire Alarm

The End of 3G: Does your Fire Alarm Communication Dialer Need to be Replaced?

October 2020 - Tent Heaters

Guidelines for Tent Heaters Used for Outdoor Dining and Fitness Activities 

September 2020 - Tents

Cold Weather Guidance for Tents Used for Outdoor Dining and Fitness Activities

August 2020 - Plan Review

Commercial Fire Plans Submission Checklist

March 2020 - Fire Protection Systems

Virtual Inspections

June 2013 - Fire Protection Equipment and Systems

Construction Permit Requirements


Fairfax Virtual Assistant