Services
Energy Tax Deductions: 179D & 45L
We turn high-performance design into bottom-line savings. Fassbender Energy Advisory models, documents, and certifies projects to unlock federal deductions and credits — and stacks them with state and utility rebates without conflicts.
Section 179D (Commercial / Common Areas)
Deduction up to ~$5.85/ft² for qualifying improvements in envelope, HVAC, and lighting. We provide the required energy modeling and attestations to meet ASHRAE standards and certification rules.
- ASHRAE-compliant baseline & proposed models
- Lighting power density, controls, HVAC & envelope measures
- Allocation support (for designers on government projects)
- Form 7205 coordination & audit-ready workpapers
Section 45L (Residential / Multifamily Units)
Credit up to $5,000 per dwelling unit for ENERGY STAR® or DOE ZERH homes and multifamily. We align specs, testing, and certification to secure eligibility.
- ENERGY STAR MFNC / DOE ZERH paths
- Envelope + mechanicals + QA testing coordination
- Modeling & documentation for CPA tax filing
- Stacking with utility/state rebates and 179D (common areas)
Our Process
- Scoping: Identify qualifying measures, certifications, and stacking opportunities (rebates, ITC, grants).
- Modeling: ASHRAE/IECC energy models and threshold checks with value-engineering feedback.
- Verification: Field QA, test reports, commissioning summaries, and certification coordination.
- Delivery: Attestations, exhibits, allocation letters, and CPA-ready packages.