15-Year Land Improvements: The Cost Segregation Category Owners Overlook
Neither Land Nor Building
Cost segregation conversations usually focus on personal property: appliances, cabinets, cabling, specialty electrical. That is where the intuition goes, because those items are visibly separate from the building.
On many properties, the larger reclassification category is something else entirely. Land improvements are a distinct class under IRC Section 168(e)(3)(E), carrying a 15-year recovery period, and on properties with significant site work they routinely exceed the 5-year personal property total.
The reason they get overlooked is that they are invisible in the accounting. When a property is recorded as land plus building, everything outside the four walls gets swept into one bucket or the other. The paving becomes part of the building. The parking lot lighting becomes part of the building. Neither is correct.
What Counts as a Land Improvement
Land improvements are depreciable additions made to land that are not part of a building and are not personal property. The category includes asphalt and concrete paving for parking, drives, and aprons, striping, wheel stops, curbs and gutters, sidewalks and walkways, patios and hardscape, retaining walls, exterior site lighting including poles, bases, and underground conduit, signage foundations and pylon structures, fencing and gates, landscaping, trees and shrubs, and irrigation systems, site utilities running from the property line to the building including water, sewer, gas, and electrical service, storm drainage, catch basins, and detention and retention basins, swimming pools and pool decking, playgrounds and sport courts, and outdoor amenity structures such as pavilions and shade structures.
All of it depreciates over 15 years using the 150 percent declining balance method under MACRS, and all of it qualifies for bonus depreciation because 15 years is within the 20-year threshold under Section 168(k).
The Line Against Non-Depreciable Land
The critical distinction in this category is not between land improvements and the building. It is between land improvements and land itself, because land is never depreciable.
Raw land, and the cost of permanently preparing it, stays in the non-depreciable bucket. General grading and clearing that permanently changes the contour of the site is treated as part of the land. So is the cost of the land itself, obviously.
But grading, excavation, and fill that is directly associated with and necessary for a specific improvement is generally depreciable with that improvement. The excavation for a parking lot subgrade, the trenching for site utilities, and the base preparation beneath a concrete pad are part of the improvement rather than part of the land.
This distinction has real dollars behind it on properties with substantial sitework, and it is the kind of determination that requires engineering judgment applied to actual construction records or takeoffs. It is also a common examination focus, which is why a defensible study documents the reasoning rather than simply asserting a number.
Why the Category Dominates Certain Property Types
Land improvements scale with site area rather than with building area, which means their share of total cost varies enormously by property type.
An RV park is nearly all land improvement, with pads, roads, and utility distribution across the entire site and only a small bathhouse and office as building. Reclassification in the 50 to 70 percent range is typical. An auto dealership paves its display lot heavily and lights it for night visibility, pushing land improvements to 20 to 25 percent of basis on its own. Retail centers, garden apartments, and suburban office parks all carry large surface lots.
At the other end, a downtown office tower with structured parking integrated into the building and a small streetscape footprint may have almost no land improvements at all. That is a large part of why urban assets reclassify at lower percentages than suburban ones.
A Better Recapture Profile Than Personal Property
Land improvements have an advantage that owners planning an exit should understand. They are Section 1250 property, not Section 1245 property.
Section 1245 personal property is subject to full ordinary income recapture on sale, to the extent of depreciation claimed. Section 1250 property generally receives unrecaptured Section 1250 gain treatment, taxed at a maximum federal rate of 25 percent rather than at ordinary rates.
That means a study weighted toward land improvements produces a materially better exit profile than one weighted toward 5-year equipment, even though both deliver the same first-year deduction under 100 percent bonus depreciation. For an owner in the top bracket, the spread between ordinary rates and the 25 percent cap is meaningful. Our post on depreciation recapture and cost segregation works through the computation.
AE Tax Advisors covers how this interacts with a planned sale or exchange in their 1031 exchange guide and real estate depreciation resources.
Capturing What You Already Own
If you own a property with a parking lot, a fenced yard, site lighting, or landscaped grounds, and your depreciation schedule shows one line for land and one for building, there is 15-year property sitting inside your 27.5-year or 39-year asset right now.
A look-back study with Form 3115 recovers all of the missed acceleration in the current tax year. Stratum performs engineering-based studies that separate and document land improvements with the support required to withstand examination.
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