Renovation Depreciation Life and Recovery Periods

The depreciation life of a renovation is 27.5 years if the building is residential rental property and 39 years if it’s commercial, but interior renovations to commercial buildings and improvements to the land around a building recover over just 15 years. Better still, 15-year renovation property placed in service after January 19, 2025, generally qualifies for 100% bonus depreciation, meaning the whole cost can come off in year one.¹ Which life actually applies to your project depends on what you renovated, how the building is used, and whether you’re stuck on the slower Alternative Depreciation System.

The Standard Recovery Periods

Under MACRS, a renovation to a building takes the same property class and recovery period the building itself would take if you placed it in service on the date the improvement was finished.² So the first question is always: what kind of building is this?

A building is residential rental property when 80% or more of its gross rental income comes from dwelling units.² Apartment buildings, duplexes, and rental houses that clear that threshold depreciate over 27.5 years using the straight-line method and the mid-month convention. Renovations to those buildings inherit that 27.5-year life.

Anything else with a business use is nonresidential real property: offices, retail, warehouses, mixed-use buildings that don’t hit the 80% dwelling-income mark. Renovations depreciate over 39 years, straight-line, mid-month.²

These long periods apply to structural components: walls, floors, ceilings, roofing, plumbing runs, wiring, and HVAC. They’re the default the IRS assumes for renovation work unless you can move a cost into a shorter-life bucket. Two of those buckets exist, and they matter enormously.

Interior Commercial Work: The 15-Year QIP Bucket

Qualified improvement property (QIP) is any improvement made to the interior of a nonresidential building that is already in service. Three things are excluded: enlargements of the building, elevators and escalators, and changes to the building’s internal structural framework.² Everything else on the inside — new interior walls, drop ceilings, flooring, lighting, non-structural electrical and plumbing — is fair game.

QIP gets a 15-year MACRS recovery period instead of 39 years. That alone cuts the timeline by more than half. And because it’s 15-year property (any recovery period of 20 years or less qualifies), it’s eligible for bonus depreciation, which is where the real money lives.

One boundary matters: QIP does not apply to residential rental property. Interior work on an apartment building still depreciates over 27.5 years unless individual components can be reclassified as personal property through a cost segregation study.

Site Work and Land Improvements: Also 15 Years

Land itself never depreciates. Improvements sitting on the land do, and most of them are 15-year MACRS property.² That covers:

Fences and retaining walls
Sidewalks and pathways
Roads and driveways
Parking lots and paving
Landscaping
Septic systems and drainage
Outdoor lighting

These assets use the 150% declining balance method, switching to straight-line when that produces a larger deduction, with the half-year convention as the default.²

If your renovation budget mixes building work with site work, separating the two carefully is worth real money. Lumping site costs into the 27.5- or 39-year building class throws away the benefit of the 15-year life. This is the entire reason commercial owners commission cost segregation studies on larger projects.

Writing It Off in Year One

The recovery period is only the schedule you fall back to if nothing accelerates the deduction. Two mechanisms accelerate it, and the 2025 tax legislation put both firmly back on the table.

Bonus Depreciation

Bonus depreciation applies to property with a recovery period of 20 years or less, which means QIP and 15-year land improvements qualify but 27.5- and 39-year structural work does not. The rate had been phasing down (80% in 2023, 60% in 2024, 40% in 2025), but the One, Big, Beautiful Bill Act signed in 2025 restored 100% bonus depreciation permanently for qualifying property acquired after January 19, 2025.¹

A $600,000 interior renovation of a commercial building placed in service in 2026 that qualifies as QIP can be deducted entirely in the year of completion.³

Two things to know. Bonus depreciation is automatic; it applies to every eligible asset unless you file an election to opt out with Form 4562 for that tax year.² The law also offers a reduced 40% rate as an alternative for property placed in service during the first tax year ending after January 19, 2025, if a smaller first-year deduction fits your tax picture better.¹

Section 179

Section 179 is the other path to immediate expensing. Unlike bonus depreciation, it requires an active election, has dollar caps, and can’t create a loss. The One, Big, Beautiful Bill Act raised the statutory ceiling to $2,500,000, with the phase-out starting when total qualifying property placed in service during the year exceeds $4,000,000.⁴ These figures are indexed for inflation; the 2025 limits match the statutory base and the 2026 amounts will be modestly higher.

Section 179 comes with a business income limitation: your deduction cannot exceed taxable income from all active trades or businesses. Anything over that cap carries forward. QIP is eligible for Section 179, which makes it useful when you want to fine-tune exactly how much of a renovation to deduct in a given year rather than take the full automatic 100% bonus write-off.

With 100% bonus depreciation now in place, many taxpayers won’t need Section 179 for renovation costs at all. It stays valuable when the bonus rules don’t reach the asset, or when entity-level planning calls for more control over the deduction amount.

Is It Even a Capital Improvement?

None of the recovery periods above matter if the expenditure is really a repair. Repairs get deducted in full the year you pay for them; only capital improvements are added to basis and depreciated.⁵

Under the IRS tangible property regulations, an expenditure is a capital improvement if it meets any one of three tests: it’s a betterment (fixes a pre-existing defect, enlarges the property, or materially increases capacity or quality), a restoration (replaces a major component or substantial structural part, or returns non-functional property to working condition), or an adaptation (modifies the property for a new or different use).⁶ Patching a leak is a repair; replacing the whole roof is a restoration. Repainting is a repair; upgrading the electrical panel to support new equipment is a betterment.

Three safe harbors let you skip the analysis for smaller expenditures:⁶

The de minimis safe harbor lets you expense items or invoices up to $2,500 each ($5,000 with audited financial statements), elected annually on your return.
The routine maintenance safe harbor covers work you reasonably expect to perform more than once during the first ten years after placing a building in service. It doesn’t cover betterments.
The small taxpayer safe harbor applies if your average annual gross receipts are $10 million or less and the building has an unadjusted basis of $1 million or less. If total annual spending on the building for repairs, maintenance, and improvements stays under the lesser of $10,000 or 2% of unadjusted basis, everything can be deducted.

When You’re Stuck With Slower ADS Periods

Everything discussed so far assumes you’re depreciating under the General Depreciation System. Some taxpayers must instead use the Alternative Depreciation System, which stretches every recovery period and uses straight-line only.

ADS is mandatory for property used predominantly outside the United States, tax-exempt use property or tax-exempt bond-financed property, and any real property held by a business that elected out of the Section 163(j) business interest deduction limitation. That last one catches real estate businesses off guard: the election is irrevocable, and once made, you’re locked into ADS permanently for real property.

Under ADS, residential rental depreciates over 30 years instead of 27.5, nonresidential real property over 40 years instead of 39, and QIP over 20 years instead of 15.² And here’s the sting: property required to use ADS does not qualify for bonus depreciation. If you made the 163(j) election to keep deducting interest, you traded away the ability to fully expense QIP.

Starting Point and First-Year Mechanics

The depreciable basis of a renovation is the full cost of getting the work ready for use: materials, labor, installation, architect and engineering fees, and permit costs. If you elect Section 179 for part of the cost, subtract that first, then apply bonus depreciation or standard MACRS to whatever remains.²

Watch out for demolition. If the renovation involves tearing down an existing structure, demolition costs cannot be deducted currently. They’re added to the basis of the land, which never depreciates, so those dollars are effectively frozen until you sell.⁷

Depreciation starts on the placed-in-service date, not when you signed a contract or broke ground. A renovated space is placed in service on the date it’s ready and available for its intended use, whether or not it’s actually being used yet.² A renovated rental unit is placed in service when it’s ready for a tenant, even if no one has moved in.

MACRS conventions govern the first- and last-year deduction. Residential rental and nonresidential real property use the mid-month convention. Fifteen-year property (QIP not being taken as bonus, and land improvements) uses the half-year convention, unless more than 40% of your non-real-property MACRS assets for the year land in the last three months, in which case the mid-quarter convention applies. Publication 946 provides the percentage tables that combine recovery period, method, and convention into a single figure you multiply against basis.²

What Depreciation Costs You Later

Every dollar you depreciate reduces your basis, so when you sell, more of the sale price is gain. Depreciation recapture is the mechanism the IRS uses to claim some of that back.

For real property renovations (27.5- and 39-year assets), the depreciation you claimed is recaptured as unrecaptured Section 1250 gain, taxed at a maximum rate of 25% instead of the lower long-term capital gains rate.⁸ Depreciation on personal property items reclassified through cost segregation (Section 1245 property such as carpeting, appliances, decorative lighting) is recaptured as ordinary income, up to the lesser of total depreciation claimed or the gain on sale.⁹

Recapture doesn’t erase the benefit of accelerating deductions. You got the write-off in earlier dollars, and you only pay recapture tax when you sell at a gain. But you need permanent records of every depreciation deduction claimed on the property, because you’ll need them to compute recapture at sale.¹⁰

1
Internal Revenue Service. Treasury, IRS Issue Guidance on the Additional First Year Depreciation Deduction Amended as Part of the One, Big, Beautiful Bill
2
Internal Revenue Service. Publication 946 (2025), How To Depreciate Property
3
Internal Revenue Service. One, Big, Beautiful Bill Provisions
4
Office of the Law Revision Counsel. 26 USC 179 – Election to Expense Certain Depreciable Business Assets
5
Internal Revenue Service. Topic No. 704, Depreciation
6
Internal Revenue Service. Tangible Property Final Regulations – Frequently Asked Questions
7
Internal Revenue Service. Publication 551 (2025), Basis of Assets
8
Internal Revenue Service. Topic No. 409, Capital Gains and Losses
9
Office of the Law Revision Counsel. 26 USC 1245 – Gain From Dispositions of Certain Depreciable Property
10
Internal Revenue Service. Publication 544 (2025), Sales and Other Dispositions of Assets