Real Estate Tax Calc
What qualifies as a land improvement
The IRS classifies certain improvements to land (not to the building itself) as 15-year property under MACRS. Common examples: driveways and parking lots, fences, sidewalks, landscaping (trees, grading, sod), retaining walls, swimming pools, and outdoor lighting systems. These are separate from the building's 27.5-year (residential) or 39-year (commercial) recovery period and should not be lumped into the building's basis.
The 15-year depreciation schedule
15-year property uses the 150% declining balance method (or straight-line if elected) with a half-year convention. More importantly, 15-year MACRS property qualifies for bonus depreciation, meaning you can deduct a large portion — or all, in prior high-bonus years — in the year the improvement is placed in service. Check the current bonus depreciation phase-down rate in our dedicated guide, as it changes each year.
Identifying and documenting them
A cost segregation study explicitly separates land improvements from the building and from personal property, giving you the most defensible allocation. Without a study, you can self-allocate if you have supporting documentation — itemized contractor invoices showing exterior vs. interior work. The IRS requires a 'reasonable method'; invoices and site plans provide the audit support.
Bonus depreciation makes exterior work especially valuable
Because land improvements are 15-year MACRS property, they qualify for bonus depreciation — unlike the building shell, which must be recovered over 27.5 or 39 years and is never bonus-eligible. That difference is what makes reclassifying site work so powerful. Under the One Big Beautiful Bill Act (OBBBA), signed in July 2025, bonus depreciation was restored to 100% and made permanent for qualified property acquired and placed in service after January 19, 2025. So a new driveway, parking lot, retaining wall, or fence placed in service on a rental today can generally be deducted in full in year one rather than spread across fifteen years. For assets placed in service earlier, the older phase-down rates apply instead — 60% in 2024, 40% for property placed in service in 2025 before the OBBBA cutoff — so the exact placed-in-service date drives the deduction you get. Always confirm the current-year rules before relying on a full write-off.
Worked example: repaving a parking area
Suppose you expand and repave the parking area at a small commercial rental in 2026 for $60,000, with the work completed and available for use that year. As 15-year land-improvement property placed in service after January 19, 2025, it is eligible for 100% bonus depreciation, so the entire $60,000 can be deducted in 2026. At a 32% marginal rate, that is roughly $19,200 of first-year tax savings. Under the ordinary 15-year schedule (150% declining balance, half-year convention), the same $60,000 would have generated only about $3,000 of deduction in year one — worth roughly $960 in tax. The trade-off: a large bonus deduction can create or enlarge a rental loss that the passive-activity loss rules suspend unless you materially participate, qualify as a real estate professional, or fall under the $25,000 active-participation allowance (which phases out between $100,000 and $150,000 of modified AGI).
Repairs versus capital improvements
Not every dollar spent outside the building is a 15-year improvement. Routine work that simply keeps an existing surface in ordinary operating condition — patching a pothole, sealing cracks, replacing a few fence pickets — is a currently deductible repair under the tangible property regulations (Treas. Reg. §1.263(a)-3). Replacing, enlarging, or materially upgrading the asset — a brand-new parking lot, a full fence replacement, regrading and re-landscaping — is a capital improvement that must be capitalized and depreciated as 15-year property. Two safe harbors can let you expense smaller items immediately and skip the depreciation schedule: the de minimis safe harbor (up to $2,500 per invoice or item for taxpayers without an applicable financial statement, $5,000 with one) and the routine maintenance safe harbor for recurring upkeep you reasonably expect to perform more than once over the property's life. Applying these correctly turns modest exterior spending into current deductions without a depreciation schedule at all.
Recapture at sale is different from the building
Land improvements are generally Section 1250 property, but they are depreciated with the 150% declining-balance method, which is faster than straight-line. The depreciation claimed in excess of what straight-line would have produced is 'additional depreciation' that is recaptured as ordinary income under Section 1250 when you sell — a harsher result than the building itself, which uses straight-line and generally produces only unrecaptured Section 1250 gain taxed at a maximum 25% rate. Bonus depreciation you claimed also enlarges total depreciation and therefore your taxable gain at sale. If you elect the straight-line method for land improvements, there is no excess over straight-line and no additional-depreciation recapture, but you give up the faster deductions. Model the sale before assuming the front-loaded deductions are pure savings — some of the benefit is timing, not a permanent reduction in tax.
Common mistakes to avoid
Three errors recur. First, lumping improvements into land: raw land is never depreciable, so treating a $40,000 parking lot as part of non-depreciable land throws away the entire deduction. Second, lumping them into the building: putting site work on the 27.5- or 39-year schedule slows the deduction dramatically and forfeits bonus eligibility. Third, ignoring the placed-in-service date: the deduction begins when the improvement is complete and ready for use, not when you sign the contract or pay a deposit. To stay defensible, keep itemized invoices that separate exterior from interior work, note the completion date on each project, and reconcile the totals back to the depreciation schedule on your Form 4562. On a property purchase rather than a self-built improvement, a cost segregation study is the cleanest way to pull the site work out of the building basis and onto the faster 15-year clock.
Planning: timing, Section 179, and using the deduction
Because land improvements are 15-year property, they interact with two other write-off tools. Section 179 expensing can immediately deduct certain qualifying property up to an annual dollar limit, but land improvements themselves are generally not Section 179-eligible — that is precisely why bonus depreciation is the primary accelerator for driveways, paving, and fencing. Sequence matters: if you plan several exterior projects, grouping them into a single tax year concentrates the deduction, while spreading them out smooths the benefit across years and brackets.
The bigger planning question is whether you can use a large first-year deduction. A full bonus write-off on a $60,000 parking lot creates a $60,000 deduction that only helps this year if you have income to absorb it. For most landlords the loss is passive and deductible only against passive income unless you meet the $25,000 active-participation allowance, qualify as a real estate professional, or run a short-term rental with material participation. If you cannot use it now, the deduction is not lost — it carries forward — but the time value shrinks. When a project straddles a year-end, remember the deduction attaches to the placed-in-service date, so completing and opening the improvement a few days earlier or later can shift the entire deduction between tax years. Coordinate the timing with your overall income picture rather than defaulting to the biggest possible first-year number.
Frequently asked questions
What depreciation period applies to a driveway or parking lot?
15-year MACRS property, eligible for bonus depreciation.
Can I deduct landscaping in year one?
If it is a capital improvement (not routine maintenance), it is 15-year property eligible for bonus depreciation in the year placed in service. Routine lawn care is an operating expense deducted currently.
Are land improvements Section 1245 or Section 1250 property?
They are generally treated as Section 1250 property. Because MACRS depreciates them with the 150% declining-balance method (faster than straight-line), the depreciation taken above the straight-line amount is 'additional depreciation' recaptured as ordinary income at sale. That is different from the building, which uses straight-line and generally has no additional-depreciation recapture.
Can I take 100% bonus depreciation on a new parking lot in 2026?
Generally yes. Under the OBBBA, 100% bonus depreciation was restored and made permanent for qualified property placed in service after January 19, 2025, and 15-year land improvements qualify. Confirm the asset is a capital improvement placed in service (complete and ready for use) in the tax year, and check that you can actually use the resulting loss under the passive-activity rules.
Are landscaping and a driveway at my personal home depreciable?
No. Depreciation only applies to property used in a trade, business, or income-producing activity. Improvements at a personal residence are not depreciable, though they do add to your home's cost basis and can reduce capital gain when you sell.
Can I use Section 179 to expense a new parking lot?
Generally no. Land improvements are typically not Section 179-eligible, which is why bonus depreciation is the main way to accelerate them. When bonus is at 100%, though, the result is similar — a full first-year deduction for a qualifying capital improvement.
What convention applies to 15-year land improvements?
MACRS 15-year property uses the half-year convention by default, meaning a half-year of depreciation in the first year regardless of the actual placed-in-service month. If more than 40% of all your depreciable property for the year is placed in service in the final quarter, the mid-quarter convention applies instead. Bonus depreciation is taken before applying the regular MACRS convention.
If I do not use a cost segregation study, how do I split exterior costs from the building?
For improvements you build yourself, use the itemized contractor invoices — they already separate the parking lot, fence, or landscaping from any building work. For a property purchase where you paid one lump sum, you need a reasonable method to carve out the site improvements, such as an appraisal, an engineer's allocation, or a cost segregation study. Keep the supporting documentation with your records; the IRS requires a reasonable, well-documented basis for any allocation.
Sources
- IRS Publication 946 — How to Depreciate Property
- IRS — Cost Segregation Audit Techniques Guide
- IRS Publication 527 — Residential Rental Property
Educational information and estimates only. Not tax advice. Tax rules change and vary by situation; consult a qualified tax professional before acting.