Common Area Lighting in LA Multifamily Buildings: What Code Actually Requires

Defective or missing light fixtures in common areas are among the most frequently cited violations in LA rental inspections. It seems simple—lights need to work—but the requirements go beyond just having bulbs in sockets.

California Building Code specifies minimum illumination levels for different areas, requires emergency backup lighting in many situations, and mandates exit signs along egress paths. A significant code change in 2022 increased stairway lighting requirements tenfold, catching many older buildings off guard.

Here’s what you actually need to know about common area lighting.

Minimum Light Levels by Area

Code doesn’t just require “adequate lighting”—it specifies minimum footcandle levels at floor level. One footcandle is roughly the amount of light from a candle one foot away, though in practice you measure with a light meter.

General Egress Paths

Hallways, corridors, and other paths people use to exit the building need 1 footcandle minimum at floor level during normal operation. This includes interior corridors, exit passageways, and exterior walkways that are part of the egress system.

Exit Stairways

Here’s where the 2022 change matters: exit stairways now require 10 footcandles when in use. This is a tenfold increase from the previous 1 footcandle standard. The reasoning is that stairs present trip and fall hazards that require better visibility than flat corridors.

Parking Areas

Parking garages and lots need 1-2 footcandles for general circulation areas. Parking ramps require 10 footcandles due to the combined vehicle and pedestrian hazards.

Exit Discharge

The path from exit doors to the public way needs 1 footcandle minimum. This includes exterior landings at exit doors, walkways to the sidewalk, and any outdoor areas people traverse while exiting.

What “At Floor Level” Means

Light levels are measured at the walking surface, not at eye height or near the fixture. A fixture that provides adequate light at eye level may not provide 1 footcandle at floor level if it’s mounted high. In stairways, measurements are taken on each tread.

The 2022 Stairway Change

The 2022 California Building Code (effective January 1, 2023) increased exit stairway illumination requirements from 1 footcandle to 10 footcandles. This is a major change that affects most older apartment buildings.

Why It Matters

Most stairwells in older buildings were designed for 1 footcandle. The lighting that was code-compliant when the building was constructed is now well below the new standard. If you’re doing work that triggers code compliance, you may need to upgrade stairwell lighting.

When It Applies

The 10 footcandle requirement applies to:

• New construction (obviously)
• Major renovations that trigger code compliance
• Buildings undergoing change of occupancy

Existing buildings with no work being done are generally allowed to maintain existing conditions. But if you’re pulling permits for substantial work, you may need to address stairwell lighting.

Emergency Lighting Requirements

Any building with two or more exits needs emergency lighting in the means of egress. This is lighting that activates automatically when normal power fails, giving occupants enough light to safely exit the building.

Where Emergency Lighting Is Required

• Exit access stairways and ramps
• Interior and exterior exit stairways
• Exit passageways
• Vestibules and exit discharge areas
• Exterior landings at exit doorways
• Electrical equipment rooms, fire command centers, fire pump rooms, generator rooms
• Public restrooms larger than 300 square feet

Performance Requirements

Emergency lighting must:

• Activate automatically within 10 seconds of normal power failure
• Provide 1 footcandle average, 0.1 footcandle minimum at floor level initially
• Maintain 0.6 footcandle average, 0.06 footcandle minimum after 90 minutes
• Function for at least 90 minutes on battery backup

Testing Requirements

Emergency lighting requires regular testing:

• Monthly: 30-second functional test (press the test button, verify it lights up)
• Annual: Full 90-minute duration test

You should be keeping written records of these tests. Inspectors increasingly ask to see documentation.

Exit Sign Requirements

Every required exit and exit access doorway needs an illuminated exit sign. If the path to the exit isn’t immediately obvious, additional signs are needed at intermediate points.

Sign Specifications

• Letters at least 6 inches high in block format
• Letter stroke width at least ¾ inch
• Strong contrast between letters and background
• Illuminated by internal or external light source

Power Requirements

• Electrically illuminated signs need two lamps (either one sufficient alone)
• 90-minute battery backup required
• Self-luminous (photoluminescent) signs are acceptable if they meet visibility requirements

The Common Exit Sign Problem

I frequently find exit signs where the battery backup has failed. The sign looks fine under normal conditions, but when you press the test button (which simulates power failure), nothing happens. Test every exit sign’s battery backup function—this is a common citation.

What I Find in Inspections

These are the common area lighting problems I see most often:

Burned-Out Bulbs

The most basic violation. Lights need to work. A single burned-out bulb in a hallway fixture will be cited. This is easily preventable with regular maintenance.

Missing Fixtures

Sometimes fixtures get removed and never replaced. There’s a junction box with capped wires where a light should be. This happens after vandalism, water damage, or maintenance work that was never completed.

Non-Functional Emergency Lighting

Emergency lights with dead batteries are extremely common. The fixture looks fine, but when power fails, it doesn’t illuminate. Test every emergency light unit by pressing the test button and verifying it produces light.

Failed Exit Signs

Exit signs with dead internal lighting or failed battery backup. Again, these often look fine under normal power but fail when tested.

Inadequate Illumination

This is harder to spot visually but becomes apparent during thorough inspections. Areas that technically have lighting but don’t meet minimum footcandle requirements at floor level. Common in stairwells with the new 10 footcandle standard.

Lighting on Tenant Circuits

Here’s a less obvious violation: the National Electrical Code requires that common area lighting (hallways, stairways, laundry rooms, parking, etc.) be on dedicated house circuits, not supplied from individual tenant electrical panels. This prevents situations where a tenant’s electrical issues affect common area safety.

I’ve seen buildings where corridor lights were wired through the nearest apartment’s panel—probably a shortcut taken during original construction or later modification. This is a code violation.

What You Should Check

Monthly

• Walk all common areas and verify every light fixture works
• Test emergency lighting units (30-second test button press)
• Test exit sign battery backup
• Replace any burned-out bulbs immediately

Annually

• 90-minute emergency lighting test (let it run on battery for full duration)
• Document test results in writing
• Replace any emergency units that don’t hold charge for 90 minutes

Before an RHHP or SCEP Inspection

• Replace all burned-out bulbs
• Test every emergency light and exit sign
• Verify fixtures are properly secured
• Check that no common area lighting has been removed

The Bottom Line

Common area lighting violations are almost entirely preventable with regular maintenance. A monthly walkthrough to check that lights work, combined with emergency lighting testing, will catch issues before they become inspection failures.

Don’t wait for an inspection to discover your emergency lights have dead batteries.