Are Land Improvements Eligible for Section 179?

Land improvements are generally not eligible for Section 179 expensing. Parking lots, sidewalks, drainage systems, landscaping, and nonagricultural fences are all classified as land improvements under the tax code, and Section 179 specifically excludes them.¹ Farming operations get a few narrow carve-outs, and certain building-related improvements do qualify. For most businesses paving a lot or installing a fence in 2026, the real first-year write-off comes from bonus depreciation, not Section 179.

Why Outdoor Land Improvements Are Excluded

Section 179 property has to be either Section 1245 property (essentially tangible personal property like equipment and machinery) or “qualified real property,” which the statute defines narrowly.¹ Outdoor land improvements fail on both counts. They aren’t tangible personal property because they’re treated as inherently permanent structures attached to the ground, and they don’t fit the statute’s definition of qualified real property, which is limited to interior building improvements and specific building systems.

The IRS applies an “inherently permanent” test to draw the line. If something is designed to stay in place indefinitely, is difficult and expensive to move, and would sustain damage on removal, it’s a structural improvement rather than personal property. Parking lots, sidewalks, drainage tile, and landscaping fall on the structural side. That makes them Section 1250 property, which isn’t eligible for Section 179 unless it fits one of the specific carve-outs Congress created.

Land itself is in a worse position. It can never be depreciated at all, because it doesn’t wear out or become obsolete. The cost of acquiring land stays on your books until you sell.²

The Agricultural Carve-Outs

Farming and ranching operations get the most meaningful exceptions. Agricultural fences used to confine livestock qualify as Section 179 property, even though nonagricultural fences are excluded. Field drainage tile also qualifies. Both are classified as 7-year property rather than the 15-year class that applies to most land improvements.³

The reasoning is that certain additions to farmland are considered part of production rather than generic site work. A fence keeping cattle contained serves a direct production function that a decorative fence at an office park does not.

Single-Purpose Agricultural Structures

Certain farm buildings also qualify, which is unusual because buildings are normally excluded. A single-purpose agricultural structure, such as a climate-controlled poultry house or hog confinement building, can be expensed if it meets three strict requirements: specifically designed and constructed for the qualifying purpose, used exclusively for that purpose, and dedicated to one particular type of livestock.⁴

The “specifically designed” requirement has teeth. If the structure could economically serve as a general-purpose barn, it fails. The IRS also watches for impermissible side uses; a qualifying livestock facility can’t double as a storage or processing center beyond incidental feed storage, and a structure housing more than one type of livestock also fails.

Horticultural Structures

Commercial greenhouses and mushroom-growing facilities follow similar rules. The structure must be specifically designed for growing plants or fungi and used exclusively for that purpose.⁴ A greenhouse that also operates as a retail garden center would likely fail the exclusive-use requirement.

Building-Related Improvements That Do Qualify

Outdoor improvements are out, but Congress carved out a specific set of building-related upgrades that businesses can expense under Section 179. The statute calls these “qualified real property,” and they split into two groups.⁵

The first group is qualified improvement property: any improvement to the interior of a nonresidential building, placed in service after the building was already open for business. New flooring, updated lighting, interior doors, and similar renovations all count. Improvements to residential rental property don’t qualify. The improvement cannot enlarge the building, add elevators or escalators, or alter the building’s internal structural framework.⁶

The second group covers four specific building systems installed in nonresidential buildings after the building was first placed in service:⁷

Roofs, including full replacement or significant repairs to a commercial building.
HVAC property covering heating, ventilation, and air-conditioning systems.
Fire protection and alarm systems, including sprinklers.
Security systems, including surveillance cameras, access control, and alarms.

If you’re replacing a commercial roof or upgrading a warehouse security system, you can elect Section 179 for the full cost, up to the annual limit.

Bonus Depreciation Is the Real Answer in 2026

For the typical business installing parking lots, fences, drainage, or landscaping, bonus depreciation under Section 168(k) delivers the first-year write-off that Section 179 won’t. Land improvements are 15-year MACRS property, and bonus depreciation applies to any property with a recovery period of 20 years or less.⁸

The picture shifted in 2025. The original phase-down schedule from the 2017 Tax Cuts and Jobs Act had cut the first-year percentage to 40% for property placed in service in 2025, headed toward zero. The One, Big, Beautiful Bill reversed course by permanently restoring 100% bonus depreciation for qualified property acquired after January 19, 2025.⁹ A business installing a $200,000 parking lot in 2026 can deduct the entire cost in the first year through bonus depreciation. No dollar cap, no phase-out based on total spending.

This is where most owners asking whether they can write off a land improvement should look. Bonus depreciation produces the same first-year result as Section 179 would, and in some ways it’s more flexible.

2026 Section 179 Limits

For tax years beginning in 2026, the maximum Section 179 deduction is $2,560,000. The deduction begins to phase out dollar-for-dollar once a business places more than $4,090,000 of qualifying property into service during the year, and it disappears entirely at $6,650,000.¹⁰ Sport utility vehicles have a separate $32,000 cap.

A taxable income limitation catches many owners off guard. Your Section 179 deduction can’t exceed your total taxable income from the active conduct of all your trades or businesses. Section 179 cannot create or increase a net operating loss.¹¹ Any amount you elect to expense but can’t deduct because of the income cap carries forward to the next tax year.

Choosing Between Section 179 and Bonus Depreciation

When both options are available, as with qualifying agricultural fences or building system upgrades, the choice comes down to control versus flexibility.

Section 179 lets you pick exactly which assets to expense and how much of each one. You can fully expense a $50,000 HVAC system while depreciating a $30,000 roof over 15 years if that produces a better result. The tradeoff is the taxable income limit: Section 179 cannot push your business into a loss.¹¹

Bonus depreciation is all-or-nothing by class. If you claim it, it applies to every qualifying asset in that recovery class placed in service during the year, unless you elect out for the whole class. But bonus depreciation can create or increase a net operating loss, and some businesses want that outcome so the loss can offset income in future years. For a heavy capital-spending year with temporarily low revenue, that matters.

When an Improvement Is “Placed in Service”

The tax year you claim any deduction depends on when the improvement is placed in service, not when you paid for it or when construction finished. The IRS considers property placed in service when it is ready and available for its specific use, even if you haven’t started using it yet.¹²

A parking lot poured in November but not striped until January is placed in service when it’s usable for parking, not when the striping is finished. A fence delivered in pieces but not installed until the next calendar year is placed in service in the year it’s erected and functional. Additions and improvements are treated as separate depreciable property, with the recovery period starting when the improvement itself is placed in service.

Default MACRS Treatment

When neither Section 179 nor bonus depreciation applies, or when a business elects out of bonus depreciation for planning purposes, land improvements follow the Modified Accelerated Cost Recovery System. Most are assigned a 15-year recovery period: drainage facilities, sewers, nonagricultural fences, landscaping, roads, sidewalks, bridges, curbing, and paved surfaces.¹³ Agricultural fences and certain farm-specific assets use a shorter 7-year period.³ The 15-year class uses the 150% declining balance method with a half-year convention, and no election is required.

Recapture If Business Use Drops

A large first-year deduction comes with strings. If property you expensed under Section 179 stops being used primarily for business before the end of its recovery period, you have to recapture the benefit as ordinary income.¹⁴ Recapture kicks in when business use falls to 50% or below.

The recapture amount is the difference between what you deducted under Section 179 and what you would have deducted through regular depreciation had you never made the election. That difference is added back as ordinary income in the year business use drops, and future depreciation is then calculated as if the Section 179 election was never made.¹⁴

1
Office of the Law Revision Counsel. 26 USC 179 – Election to Expense Certain Depreciable Business Assets
2
Internal Revenue Service. Depreciation Expense Helps Business Owners Keep More Money
3
Internal Revenue Service. Publication 225, Farmer’s Tax Guide – Table 7-1 Farm Property Recovery Periods
4
eCFR. 26 CFR 1.48-10 – Single Purpose Agricultural or Horticultural Structures
5
Office of the Law Revision Counsel. 26 USC 179 – Election to Expense Certain Depreciable Business Assets – Section (e)
6
Office of the Law Revision Counsel. 26 USC 168 – Accelerated Cost Recovery System – Section (e)(6)
7
Office of the Law Revision Counsel. 26 USC 179 – Election to Expense Certain Depreciable Business Assets – Section (e)(2)
8
Office of the Law Revision Counsel. 26 USC 168 – Accelerated Cost Recovery System – Section (k)
9
Internal Revenue Service. Treasury, IRS Issue Guidance on the Additional First Year Depreciation Deduction Amended as Part of the One, Big, Beautiful Bill
10
Internal Revenue Service. Rev Proc 2025-32 – Inflation Adjusted Items for 2026
11
eCFR. 26 CFR 1.179-2 – Limitations on Amount Subject to Section 179 Election
12
Internal Revenue Service. Publication 946 – How to Depreciate Property
13
Internal Revenue Service. Publication 946 – How to Depreciate Property – 15-Year Property
14
eCFR. 26 CFR 1.179-1 – Election to Expense Certain Depreciable Assets