Emergency lighting and exit signage are among the most consistently overlooked systems in commercial building maintenance — until there's an incident. The consequences of a failure during a fire, power outage, or emergency evacuation range from regulatory fines to genuine life-safety liability. Yet these systems are frequently found in non-compliant or non-functional condition during routine commercial inspections.
This post covers what Arizona commercial property owners and managers are required to maintain, what professional inspection reveals, and why the gap between what's required and what's typically maintained is wider than most owners expect.
What the Code Requires: The Basics
Emergency lighting and exit sign requirements for commercial buildings in Arizona are governed by the International Fire Code (IFC) and the National Fire Protection Association's NFPA 101 (Life Safety Code), as adopted and amended by local jurisdictions. The core requirements are consistent across most commercial occupancy types.
Emergency lighting must provide a minimum illumination level of 1 foot-candle at floor level along the path of egress for a minimum of 90 minutes following a loss of normal power. This means the emergency lighting system must have a battery backup capable of sustaining that illumination through the full 90-minute period — not just at initial activation, but at the end of the discharge cycle.
Exit signs must be illuminated continuously and visible from the designated direction of travel. Where the path of egress is not immediately apparent, directional indicators are required. Exit signs must also remain illuminated for a minimum of 90 minutes on battery power following normal power loss.
Testing Requirements That Most Property Owners Don't Know About
The code doesn't just require that these systems exist — it requires that they be tested on a documented schedule. NFPA 101 requires:
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A 30-second functional test of all emergency lighting units and exit signs monthly
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A full 90-minute discharge test of all battery-backed units annually
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Written documentation of all testing, maintained and available for inspection by the authority having jurisdiction (AHJ)
The annual 90-minute test is where most non-compliance is discovered. A unit that passes a 30-second test — where the battery is barely drawn down — may fail before the 90-minute mark if the battery has degraded. Battery life in emergency lighting units is typically 3 to 5 years under ideal conditions. In Arizona's heat, battery degradation is accelerated. Units on south-facing walls or near heat sources may fail the 90-minute test well before the battery's rated replacement interval.
What a Professional Emergency Lighting Inspection Covers
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Fixture presence and placement — are units positioned to illuminate the required egress path?
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Lamp condition — are lamps functional, and are the correct lamp types installed?
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Battery condition and age — when was the battery last replaced, and does the unit pass an activation test?
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Exit sign illumination and legibility — are signs illuminated, correctly oriented, and unobstructed?
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Directional indicators — are they present where required and oriented correctly?
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Coverage gaps — are there areas along the egress path that fall below code illumination levels?
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Documentation review — does the property have records of required monthly and annual testing?
The inspection report documents every unit evaluated, its condition, any deficiencies noted, and the corrective action required. For properties where the inspection is being conducted as part of an insurance or liability documentation process, the report provides a dated record of system condition.
The Most Common Deficiencies Found in Arizona Commercial Buildings
Failed or degraded batteries
The most common finding across all commercial building types. Batteries in emergency lighting units have a finite service life, and replacement is routinely deferred. A unit with a failed battery shows no visible indication of non-compliance until it's tested. The 30-second monthly test doesn't reveal gradual battery degradation — only the annual 90-minute test does, and that test is the one most frequently skipped.
Missing or obstructed exit signs
Exit signs get removed during renovation and not replaced, or are mounted in locations that become obstructed by equipment, shelving, or signage added after the original installation. In retail and restaurant environments particularly, merchandising decisions can inadvertently block exit sign visibility from required viewing angles.
Inadequate egress path illumination
Buildings that have been reconfigured since original construction may have egress paths that no longer align with where emergency lighting units are positioned. A warehouse that's been subdivided, a restaurant that's added a back-of-house storage area, or an office suite that's been built out differently than the original floor plan — all of these create the potential for coverage gaps that weren't present at original installation.
Missing testing documentation
Even in buildings where the physical systems are in compliant condition, the absence of required testing records is a code deficiency. The AHJ's ability to verify that required testing has been performed depends entirely on the documentation the property maintains. Buildings without monthly test logs are non-compliant regardless of whether the systems themselves are functional.
Why This Matters Beyond Code Compliance
Emergency lighting failures during an actual emergency — a fire, a sudden power outage, a medical incident that requires rapid evacuation — create liability exposure that property owners and managers should take seriously. When an occupant is injured during an evacuation and the investigation reveals that emergency lighting was non-functional or non-compliant, the documentation trail becomes critical.
Properties that maintain current inspection records, testing logs, and prompt corrective action documentation are in a fundamentally different position than those that cannot demonstrate a maintenance history. This applies not only to liability exposure in litigation but to insurance claim processing — carriers underwriting commercial property often require evidence of life-safety system compliance as a condition of coverage.
Scheduling and Scope
Commercial & Residential Inspections, LLC provides emergency lighting inspections for commercial properties throughout the Phoenix metro area, including Phoenix, Glendale, Tempe, and Avondale. The inspection is available as a standalone scope or as part of a broader commercial building inspection.
For property managers overseeing multiple commercial buildings, or for building owners preparing for lease renewal or sale, combining the emergency lighting inspection with a full commercial building inspection provides comprehensive documentation of all major systems in a single engagement.
Questions about what a commercial inspection covers and what the report deliverable looks like are answered in the commercial inspection checklist post and in a sample report available on the site.