179D TAX DEDUCTION
Maximize Your 179D Tax Deduction
What is the 179D Study Process?
Discovery & Assessment
Identify buildings from project list, secure allocation letters, and obtain documentation
Qualitative & Quantitative Analysis
Conduct energy modeling and field inspections, create certifications, and provide final deduction numbers for filing
Reporting
Catalogue documentation and draft project summaries and final report
What is the 179D Tax Deduction?
The 179D tax deduction, also known as the Energy Efficient Commercial Buildings Deduction (EECBD), incentivizes both commercial building owners and designers of public and tax-exempt buildings to implement energy-efficient technologies. This incentive has been in effect since 2006, but with enhancements from the Inflation Reduction Act, the deduction now offers even greater financial benefit and more opportunity to claim.
This deduction targets improvements in HVAC systems, lighting, and building envelopes, encouraging both building owners and designers to adopt new technologies and innovative methods. Eligible projects, including those involving government-owned buildings, non-profits, Indian tribal governments, or Alaska Native organizations, can receive deductions over $5 per square foot. To qualify for the full deduction, projects must meet specific prevailing wage and apprenticeship requirements.
By taking advantage of the 179D deduction, eligible businesses can significantly reduce tax outlay while contributing to a more sustainable future. Our expert team is here to guide you through the process and help maximize your benefit.
Who Can Take Advantage of Section 179D?
Under current law, many types of entities can benefit from the 179D deduction. Commercial building owners who implement qualified improvements are eligible, as are designers of buildings owned by governmental and non-profit entities:
- Architects
- Engineers
- Contractors
- Energy Service Providers
- Environmental Consultants
Who Can Provide a 179D Allocation Letter?
- Governmental entities
- Not-for-profit organizations
- Indian tribal governments and Alaska Native corporations
Tax-exempt organizations can negotiate the allocation of the 179D deduction to the designer of the property, offering substantial savings for new projects. This is particularly beneficial for groups with significant real estate holdings, such as universities, hospitals, and religious organizations.
What Improvements Qualify for the 179D Tax Deduction?
Companies designing or investing in new buildings or building improvements are eligible for the 179D deduction. Projects must involve at least one of the following systems:
- HVAC and Hot Water
- Interior Lighting
- Building Envelope


