Understanding Section 179 for Commercial Roofing
IRS Section 179 allows businesses to deduct the full cost of qualifying commercial roof replacement in the tax year the roof is placed in service — rather than depreciating the cost over 39 years. For Tulsa commercial property owners planning a roof replacement in 2026, this can mean an immediate tax deduction of $50,000 to $500,000+ depending on the scope. Proof Construction provides detailed cost segregation documentation to support your Section 179 deduction claim.
Qualifying for the Deduction
- Qualified Improvement Property (QIP): Commercial roof replacements that are part of an interior building improvement qualify for 100% bonus depreciation under Section 179. The roof must be placed in service after September 27, 2017.
- Documentation Requirements: The IRS requires detailed cost segregation between structural and non-structural components. We provide line-item scopes of work that separate membrane, insulation, flashing, and labor costs.
- 2026 Tax Year Limits: Section 179 deduction limit is $1,220,000 with phase-out beginning at $3,050,000 of qualifying property placed in service.
How We Support Your Deduction
Proof Construction works with your CPA or tax professional to provide the documentation needed for Section 179 compliance. Our scopes of work include detailed material specifications, cost breakdowns by CSI MasterFormat division, and photographs documenting the installation process. We also provide certification letters confirming the placed-in-service date for each tax year.