Energy codes are evolving fast—and 2026 marks a major shift for commercial properties, HOAs, and property managers.

Driven by updates to the 2024 International Energy Conservation Code (IECC) and ASHRAE 90.1 standards, these changes are designed to reduce energy use, improve efficiency, and push buildings toward smarter, automated systems.

If your property hasn’t been reviewed recently, there’s a good chance you’re already behind the curve.

What’s Driving the 2026 Changes?

Most jurisdictions are now adopting or aligning with:

• 2024 IECC (International Energy Conservation Code)
• ASHRAE 90.1-2022 / upcoming 2025 updates

These newer standards are delivering measurable results, with nearly 10% commercial energy savings compared to previous codes.

Translation:

Less wasted energy = lower operating costs + stricter compliance requirements

The Biggest Changes Property Owners Need to Know

Lighting Must Automatically Turn Off (or Dim)

Lighting is no longer “manual.”

New requirements mandate that lighting systems:

• Turn OFF or dim when spaces are unoccupied
• Respond to schedules or daylight levels
• Include manual override controls

These controls are now required across most commercial applications.

Advanced Lighting Controls Are Now Mandatory

Basic timers are no longer enough.

New code emphasizes:

• Occupancy sensors in more space types
• Daylight-responsive dimming near windows
• Time-based scheduling systems
• Demand-response capability (utility signal dimming)

Lighting must now dynamically adjust to real-world conditions—not just turn on and off

 

Continuous Dimming Requirements

Many spaces must now support:

• Smooth dimming down to 10% or less
• Full shutoff capability

This replaces older “step dimming” or simple switching systems

 

Lower Lighting Power Limits (Less Watts Allowed)

Codes now require:

• Reduced watts per square foot
• More efficient fixtures and layouts

This directly impacts:

• Parking lots
• Common areas
• Exterior building lighting

You can’t just replace fixtures—you must design for efficiency

Stricter Rules for Retrofits & Repairs

One of the biggest changes:

• Even small upgrades may now trigger compliance
• Partial replacement exemptions have been reduced or removed

Meaning:
Simple “like-for-like” replacements may no longer meet code

Expanded Requirements for Existing Buildings

Energy codes are no longer just for new construction.

Now they apply more heavily to:

• Renovations
• Additions
• Major repairs

If a project crosses a certain threshold, it may require full or partial system upgrade (ICC)

 

Energy Monitoring & Submetering

Newer codes require buildings to:

• Track energy usage by system (lighting, HVAC, etc.)
• Install submeters in larger facilities

This creates greater accountability—and visibility into energy waste (Leviton)

Exterior Lighting Efficiency Tightened

Exterior lighting must now:

• Use less energy
• Be more targeted (reduced spill + glare)
• Integrate with controls like photocells and timers

This aligns with both energy efficiency goals and light pollution concerns

How to Stay Ahead of 2026 Energy Codes

✔ Conduct a Lighting Audit

Identify inefficiencies and compliance gaps

✔ Upgrade Controls First

Controls often deliver the biggest ROI and ensure compliance

✔ Plan Retrofits Strategically

Avoid piecemeal upgrades that trigger bigger requirements later

✔ Partner with a Lighting Specialist

Codes are complex—and constantly evolving

Why Property Managers Work with Nevada Illumination

Nevada Illumination helps clients:

• Stay ahead of energy code changes
• Upgrade lighting systems strategically
• Reduce costs while improving safety
• Maintain compliant, high-performing properties

Finally:

Energy code changes in 2026 are not minor updates—they represent a shift toward:

• Smarter buildings
• Automated lighting systems
• Higher efficiency standards

The properties that plan ahead will:

✔ Avoid costly surprises
✔ Improve safety and performance
✔ Lower long-term operating costs