Tax Deductions for Commercial Buildings

Section 179D of the Internal Revenue Code allows deductions for energy-efficient commercial buildings. These tax deductions were made permanent under the Consolidated Appropriations Act of 2021.

What Can Be Deducted?

A tax deduction of up to $1.80 per square foot is available to owners or designers of commercial buildings or systems that demonstrate a 50% reduction in energy usage accomplished solely through improvements to the heating, cooling, ventilation, hot water, and interior lighting systems. Partial deductions of up to $.60 per square foot can be taken for qualifying measures.

Eligible Time Frame

The deduction is available for buildings or systems placed in service after December 31, 2017.  

How to Apply for the Tax Deduction

The IRS requires that you use a qualified software program to model your energy usage. See a list of qualified software for calculating energy savings.

Additional Information

Get Help Saving Energy in Your Commercial Building

For information on capturing energy-efficiency opportunities for your commercial property, visit www.energystar.gov/buildings.

ENERGY STAR Tenant Space

What is the 1-100 ENERGY STAR score and certification for buildings?