ยง179D Tax Deductions for Energy-Efficient Projects
Deducting your energy-efficient buildings can lead to significant cost savings. Source Advisors helps building owners, developers and designers take advantage of the EPAct ยง179D or ยง45L.
Is the ยง179D tax deduction permanent?
On December 27, 2020, a $1.4 trillion omnibus spending bill with tax extenders was signed into law. The tax provisions include a permanent extension of the ยง179D Energy-Efficient Commercial Buildings Tax Deduction.
What is the ยง179D Tax Deduction for Energy-Efficient Buildings?
Commercial building owners and designers of public building projects that incorporate certain sustainable building components can qualify for the EPAct ยง179D tax deduction.
As energy costs rise, reducing those costs is a priority for most public and private organizations. Source Advisors helps building owners and design firms understand and fully leverage this incentive.
The Energy Policy Act (EPAct) ยง179D tax deduction provides a deduction of up to $1.80 per square foot for the installation of systems that reduce the total energy and power costs by 50 percent in comparison to a building meeting minimum requirements set by ASHRAE Standard 90.1-2007.
Eligible building systems include the building envelope, interior lighting systems, heating, cooling, ventilation, and hot water systems.
ยง179D Tax Deduction Benefit Summary
What are the Benefits of the ยง179D Tax Deduction?
Under Section ยง179D of EPAct, energy-efficient building owners and designers can have significant cost savings by qualifying for this tax deduction. Building owners and designers of public projects can potentially receive a full deduction of $1.80/SF or a partial tax deduction of $0.60/SF for lighting, HVAC, and building envelope.
Which Buildings Qualify for the ยง179D Tax Deductions?
To qualify for a full or partial deduction, the energy-efficient building property must meet the following criteria. The building:






Lighting โฅ 25% = $0.60

HVAC โฅ 15% = $0.60

Envelope โฅ 10% = $0.60


How Building Owners Use the EPAct ยง179D Tax Deductions
If your company builds, owns or leases commercial buildings, and you have installed or retrofitted the property to be more energy-efficient, you may be eligible to deduct all or part of the costs associated with the installation or retrofit.
The company or person that makes the expenditures for construction is generally the recipient of the ยง179D deduction. Usually this is the building owner, except in the case of government-owned buildings. The deduction can be claimed for projects placed in service after January 1, 2006 by filing a Form 3115 or amending the tax returns.
Determining Eligibility of the EPAct ยง179D Tax Deductions

The ยง179D deduction can be claimed for projects placed in service on or after January 1, 2006 by filing a Form 3115 or amending their tax returns.
Selecting Projects โ Energy-Efficient Tax Deductions Criteria

Non-profit buildings do not qualify.
Defining the Free Assessment through Source Advisors
Upload MEP/Architectural drawings and building specs to our team of engineers via our secure server.

What To Expect with Source Advisors as Your ยง179D Tax Credit Partner





Ready for help with your
ยง179D energy credit?
How EPAct ยง179D Tax Deduction
Works for Designers
Many designers are not aware that their sustainable building designs may qualify for the EPAct ยง179D tax deduction. Energy-efficient building property that is owned by a federal, state, or local government, or a political subdivision thereof, the owner of the property may allocate the ยง179D tax deductions to the primary designer(s) of the building.
The primary designer is the person who creates the technical specifications for installation of energy-efficient commercial building property for a new building or addition/renovations to an existing building.
A designer may be an architect, engineer, contractor, environmental consultant or energy services provider.
Determining Eligibility of the EPAct ยง179D Tax Deduction




Selecting Projects โ Energy-Efficient Tax Deduction Criteria




Defining the Free Assessment for Designers
Upload Architectural & MEP drawings and building specs to our team of engineers via our secure server.
Completed estimate includes the amount of the potential tax deduction and the fee per square foot to certify the project.
The Allocation Form



What to Expect with Source Advisors as Your Partner



Complimentary service in drafting the Allocation Form and obtaining signatures.
Detailed documentation to support the deduction with complimentary audit support.
Defining the Free Assessment through Source Advisors
Which buildings qualify as eligible deductions under Section ยง179D?
Building types that fall under the scope of ASHRAE Standard 90.1-2001 are eligible for Section ยง179D. This includes new construction or major renovations of: A designer may be an architect, engineer, contractor, environmental consultant or energy services provider.



Building types that are excluded from Section ยง179D:






Who are the ideal candidates for ยง179D?


Do government-owned buildings qualify for ยง179D?
Yes, government-owned buildings at the local, state, and federal level might qualify for Section ยง179D tax deduction. These buildings include: Schools, post offices, state universities, libraries, town halls, institutions, government offices, courthouses, military bases, airports, and transportation facilities.
What documents are required if my business performed ยง179D work on a government-owned building?
You would need to obtain an allocation letter from that government entity that transfers the Section ยง179D benefit directly to you. At Source Advisors, our team handles this process from start to finish on your behalf.
To qualify for ยง179D energy-efficient buildings deduction, is an independent third-party required to review the building?
How Do I Claim my ยง179D deduction?
Do LED lights qualify for ยง179D tax credit?
Lighting systems must include automatic controls prescribed in the ASHRAE 90.1 standard and a provision for bi-level switching in all spaces except hotel and motel guest rooms, storerooms, restrooms, and public lobbies. The illuminance levels must meet the minimum requirements as per the IESNA lighting handbook.
Which types of HVAC plumbing qualify for ยง179D?
The types of potentially qualifying systems or system components include:










What are the considerations for the ยง179D Building Envelope?
Building Envelopes are the most difficult systems to predict for Section ยง179. It is beneficial to keep these considerations in mind:












What are other factors to consider under ยง179D building modeling?
Building Envelopes are the most difficult systems to predict for Section ยง179. It is beneficial to keep these considerations in mind:





ยง45L Energy-Efficient Home Credit
Section ยง45L is a little-known tax credit that offers developers a means to offset the costs associated with building energy-efficient single family or multifamily properties. The credit provides a dollar-for-dollar offset against taxes owed or paid in the tax year in which the property is sold or leased.
What is the ยง45L Tax Credit?
The Internal Revenue Code (IRC) Section ยง45L is a $2,000 per dwelling unit ($1,000 for manufactured homes) tax credit for each new energy-efficient home which is constructed by an eligible contractor and acquired by a person from the eligible contractor for use as a residence during the tax year. The credit can be taken on amended returns or carried forward up to 20 years.
The IRS requires that a ยง45L analysis be conducted by a certified third-party using IRS-approved modeling software. A dwelling unit must be certified to provide a level of heating and cooling energy consumption that is at least 50 percent below that of a comparable dwelling unit constructed in accordance with the standards of either the 2003 IECC or 2006 IECC (depending on the year sold or leased). It also must have building envelope component improvements that provide for a level of heating and cooling energy consumption that is at least 10 percent below that of a comparable dwelling unit.
Who Can Benefit from the ยง45L Tax Credit?
Homebuilders, single family or multifamily developers can benefit from the ยง45L Tax Credit.
Which Energy-Efficient Buildings Qualify for the ยง45L Tax Credit?
The following energy-efficient buildings qualify for the ยง45L tax credit:
Residential Condominiums





The Source Advisors Approach to Claiming the ยง45L Tax Credit




Example of Potential ยง45L Tax Credits
