Depreciate Land Improvements After Cost Seg (2026 Guide)
Land improvements sit in a strange spot on the balance sheet: separate from land, separate from the building, and depreciable on a schedule most rental owners never apply correctly. This guide walks through how to depreciate land improvements after a cost segregation study identifies them.
- Land improvements identified in a cost segregation study depreciate over 15 years using 150% declining balance, not land's zero depreciation.
- Sidewalks, fencing, landscaping, and parking areas typically qualify as 15-year property under MACRS.
- 100% bonus depreciation applies to land improvements placed in service after January 19, 2025 under the OBBBA.
- Missed depreciation on land improvements from prior years gets caught up in one year using Form 3115, no amended returns required.
- Land improvements tied to a future construction project get capitalized into that new asset instead of depreciated separately.
Why this matters
Land never depreciates. That's a fixed IRS rule with no exceptions. But the concrete, the fencing, the irrigation lines, and the parking pad sitting on top of that land are a different asset class entirely, and most residential rental owners lump all of it into the 27.5-year building bucket by default.
A cost segregation study exists to pull those items out and reclassify them correctly. On a typical short-term rental or residential rental property, a cost segregation study for Airbnb and short-term rentals reclassifies somewhere between 20% and 45% of the property's depreciable basis into 5-year, 7-year, and 15-year buckets. Land improvements almost always land in that 15-year bucket, and in 2026 that bucket is eligible for 100% bonus depreciation under the One Big Beautiful Bill Act for property placed in service after January 19, 2025.
That's the difference between writing off a $40,000 driveway and parking lot over 27.5 years versus writing off the entire amount in year one.
What you'll need
- A completed cost segregation study that itemizes land improvements separately from the building and from land value
- Your property's closing statement or appraisal to confirm the original land-to-building allocation
- Form 4562 (Depreciation and Amortization) for the tax year you're claiming the deduction
- Form 3115 if you're catching up depreciation missed in prior tax years
- A CPA who will actually implement the study's findings on your return, since the report itself is never filed with the IRS
The steps
1. Confirm which items in your report are land improvements
A cost segregation report separates your property into land, building (27.5-year residential real property), and personal property plus land improvements (5, 7, and 15-year classes). Land improvements typically include sidewalks, driveways, fencing, retaining walls, exterior lighting, landscaping, irrigation systems, and parking areas.
The common mistake here is confusing land improvements with land. Raw land never depreciates because it doesn't wear out. A paved driveway does wear out, so the IRS lets you depreciate it, just on its own 15-year schedule instead of the building's 27.5-year one.
2. Apply the 15-year, 150% declining balance method
Land improvements use MACRS 15-year property class life with the 150% declining balance method, switching to straight-line when that produces a larger deduction. This is different from the 5-year and 7-year personal property items (appliances, cabinetry, flooring) that also come out of a cost segregation study, which use 200% declining balance.
Your CPA applies this on Form 4562 using the correct convention (usually half-year, sometimes mid-quarter if more than 40% of your assets were placed in service in the last quarter of the year).
3. Check bonus depreciation eligibility for the placed-in-service date
Any asset with a class life of 20 years or less qualifies for bonus depreciation, and land improvements at 15 years clear that bar easily. For property acquired and placed in service after January 19, 2025, the OBBBA restores bonus depreciation to 100%, meaning the entire land improvement value can be deducted in the year the property goes into service instead of spreading it over 15 years.
If your property was placed in service before that date, older bonus depreciation percentages may apply instead. This is where the placed-in-service date on your closing documents matters more than the purchase date.
4. Separate land improvements from land value on your books
Your original purchase allocation (often from a county assessor's ratio or an appraisal) usually lumps land improvements into land value by default. After a cost segregation study, you need to carve out the improvement value separately in your depreciation schedule going forward, distinct from the non-depreciable land value.
On a $500,000 property where cost segregation reallocates 25% of value, land improvements are typically a meaningful slice of that reallocated amount, not the whole thing, since personal property (appliances, flooring, cabinetry) usually makes up a larger share on residential rentals.
5. File Form 3115 if you missed prior-year depreciation
If you've owned the property for a few years and never separated out land improvements, you don't need to amend every prior return. Catching up missed depreciation with Form 3115 lets you claim the entire missed amount as a single adjustment (a Section 481(a) adjustment) in the current tax year.
This is one of the more overlooked parts of cost segregation: owners assume they've lost the deduction if they didn't do a study in year one. They haven't.
6. Coordinate the numbers with your CPA before filing
A cost segregation report is a supporting document, not a filed tax form. Your CPA takes the itemized land improvement values from the report and applies them on Form 4562 and, if relevant, Form 3115. Accelerated depreciation for rental property owners only produces tax savings once it's actually implemented on a filed return, not when the report is generated.
7. Track recapture exposure before you sell
When you sell, depreciation claimed on land improvements is subject to Section 1250 recapture rules if straight-line was used, or ordinary income recapture under Section 1245 if the item is treated as tangible personal property under some interpretations. The rules vary by asset type, which is exactly why the itemized breakdown in your original study matters years later, not just in the year you claim the deduction.
Get your land improvements identified correctly
A flat-fee, engineering-based study itemizes every land improvement on your property.
Troubleshooting
Problem: Land improvements got lumped into land on your closing statement. Fix: The closing statement's land value is a starting point, not a final answer. A cost segregation study reallocates part of that value into depreciable land improvements based on engineering analysis, not the county assessor's ratio.
Problem: You paved a driveway during a renovation and don't know if it's a repair or a capitalized improvement. Fix: New paving, resurfacing an entire lot, or replacing a failed system is capitalized as a land improvement. Patching potholes or minor repairs is usually an expense in the year incurred. Cost segregation for renovated and remodeled properties covers how renovation costs get sorted between the two.
Problem: You assumed bonus depreciation is capped below 100% in 2026. Fix: It isn't, for property placed in service after January 19, 2025. The OBBBA restored full 100% bonus depreciation, reversing the phase-down schedule that was cutting it to 40% before the law changed.
Problem: Land improvements tied to new construction got depreciated instead of capitalized. Fix: If the land improvement is part of a construction project still underway (grading before a foundation pour, for example), it typically gets capitalized into the new building's basis rather than depreciated on its own 15-year schedule. Timing of placed in service is the deciding factor.
Problem: Your CPA applied 200% declining balance instead of 150%. Fix: Land improvements use 150% declining balance, not the 200% rate used for 5-year and 7-year personal property. This is a common data-entry error when tax software defaults to the wrong class.
Tools and resources
- Form 4562 and its instructions, for the actual filing mechanics
- Form 3115, for catching up depreciation on land improvements missed in prior years
- A CPA familiar with cost segregation implementation, since the study itself is never filed directly with the IRS
What to do next
Once land improvements are correctly separated and depreciating, the next question is usually whether you're leaving other deductions on the table. How to read a cost segregation study report walks through every line item in a typical 100+ page report, land improvements included, so you know what your CPA should be applying and where.
“Land itself never depreciates, but everything built on top of it usually does.”
FAQ
What are land improvements for depreciation purposes?
Land improvements are physical additions to a property's land, such as driveways, sidewalks, fencing, landscaping, and parking areas, that wear out over time and qualify for depreciation separately from the non-depreciable land itself.
How many years do you depreciate land improvements?
Land improvements depreciate over 15 years using the 150% declining balance method under MACRS, distinct from the 27.5-year schedule used for the residential building itself.
Can you take bonus depreciation on land improvements in 2026?
Yes. Land improvements have a class life under 20 years, so they qualify for 100% bonus depreciation on property placed in service after January 19, 2025 under the OBBBA.
Is a driveway a land improvement or land?
A driveway is a land improvement, not land. Land never depreciates because it doesn't wear out, but a paved driveway deteriorates over time and depreciates over 15 years.
Do land improvements need a cost segregation study to be identified?
Not legally, but in practice most rental owners never separate land improvements from land or the building without one, since default depreciation schedules lump everything together at 27.5 years.
What happens to land improvement depreciation when you sell the property?
Depreciation claimed on land improvements is subject to recapture rules at sale, taxed differently depending on whether the asset falls under Section 1245 or Section 1250, which is why an itemized study matters years after it's completed.
Can land improvements be depreciated on a rental property?
Yes, both long-term residential rentals and short-term rentals like Airbnb and VRBO properties can depreciate land improvements separately once a cost segregation study identifies them.
What's the difference between land and land improvements?
Land is the raw ground itself and never depreciates under IRS rules. Land improvements are the physical additions on top of that ground, like fencing or paving, and depreciate over 15 years because they have a finite useful life.
One last thing
Owners who catch this after a few years of ownership assume they've permanently lost the missed deductions. Form 3115 exists specifically to fix that in a single filing, no amended returns required, which makes a mid-ownership cost segregation study almost as valuable as one done at closing.