In 2025, Washington State has implemented new laws encouraging higher-density housing, which, among other things, has resulted in more construction of ADUs and multi-family units. Due to booming construction and higher density, fire safety regulations are being updated across the state. Last year, Seattle implemented new city-wide fire codes, and Washington State introduced new fire safety guidelines related to lithium battery storage.
With increased construction in a region prone to wildfires, more regulations will likely be introduced in the near future to protect communities in the Evergreen State. Decision makers in the construction industry must stay current with fire codes that undergo frequent updates. The best approach is to be proactive: connect with your local fire marshal’s office to understand applicable fire codes, and practice a high standard of fire safety on site at all times to hedge against future legal requirements.
To help folks in our network with the latter, we’ve put together a fire safety checklist for construction teams in Washington State, informed by our reading of the recent fire code updates. Be sure to educate yourself on fire safety best practices and the role that fire watch plays on busy construction sites.
Fire Watch For Construction Sites
Any occupied space that requires fire safety systems must deploy fire watch guards when those systems are inoperative for four hours or more, including construction sites. In addition, “Hot Work” such as welding, torching, or brazing, must be performed with fire watch guards present for observation when there are no industrial fire safety implements on site.
In Washington, construction sites may also demand fire watch guards during nonworking hours if the site meets specific criteria. These state-level requirements are at the discretion of your local fire marshal.
A proactive fire safety plan is essential on any Washington construction site, especially with updated local and state fire codes now in effect. Use the following checklist to stay compliant and protect your team, site, and surrounding community:
Fire Safety Checklist
Confirm Fire Protection Status
Before work begins each day, verify that essential systems like fire sprinklers, standpipes, and alarms are fully operational. If any system is offline or impaired—even temporarily—initiate a fire watch as required by code.
Implement Fire Watch Protocols
When fire protection systems are compromised or absent, assign a trained fire watch team to monitor the site. Section 3314 of the Washington Building Code requires fire watches during non-working hours for buildings over 40 feet tall or as directed by the fire official.
Coordinate with Local Authorities
Project Managers should schedule inspections, notify the fire department of system outages, and ensure compliance with Washington-specific requirements or any applicable jurisdiction. Clear communication with regulators can prevent delays and ensure swift approvals.
Stay Current with Fire Code Updates
Washington recently adopted portions of the 2024 International Fire Code (IFC), and Seattle’s 2021 Fire Code became enforceable citywide in November 2024. Make sure your fire safety plan reflects the latest local and state provisions—especially around high-risk materials or temporary structures.
Ensure Clear Access and Egress
Maintain at least five feet of clear access around the site and accessory structures to allow for emergency vehicle entry, especially in dense urban areas like Seattle. Keep fire lanes and stairwells unobstructed at all times.
Document Safety Activities
Maintain detailed records of fire watch shifts, system impairments, and inspection outcomes. This documentation helps demonstrate compliance in the event of an incident or audit and ensures continuity during project turnover.
Communicate and Train the Team
Fire safety isn’t just a checklist—it’s a culture. Project Managers should ensure all workers understand fire watch triggers, know emergency protocols, and have quick access to contact numbers for local fire authorities.
Contact National Firewatch
Our team members have decades of experience working along the I-5 Corridor and across Washington State. If you have an upcoming construction project and need a quote as part of your planning process, or require guards immediately, please contact our office today.