Cost segregation for aircraft hangars
An aircraft hangar is a very large door with a roof attached — and the door is the item buyers most often expect to accelerate and cannot. The leading case put the hangar and its doors in the 39-year shell, which caps this property type well below a typical commercial study. The acceleration that survives sits in the apron and taxilane paving, the door's operating machinery, and the high-bay power that lights and warms an oversized volume. This is a real-property study of the building and site, not of any aircraft.
| Typical market range | 10–18% |
|---|---|
| Typical market fee | $5k–18k |
| Recovery periods captured | 5-, 7- and 15-year vs the 39-year shell |
| Top-ranked provider (our rubric) | Cost Seg Smart |
| Delivery | Engineering-based; virtual or on-site depending on the provider |
1What reclassifies in an airport hangar
In an airport hangar, cost segregation typically reclassifies 10–18% of depreciable basis out of the 39-year building shell into 5-, 7- and 15-year property. The components that recur:
| Component | Recovery period | Authority carried (with caveat) |
|---|---|---|
| Hangar door leaf, track & frame — bi-fold, hydraulic-swing or fabric | 39-year | In McManus the Seventh Circuit treated an airplane hangar and its doors and partitions as §1250 property, and Reg. §1.48-1(e)(2) treats such assemblies as structural components. Buyers frequently expect this line to accelerate; on the leading authority it generally does not. A contrary position needs facts that genuinely distinguish McManus, not a rule of thumb. |
| Door operating machinery — hydraulic power unit, motor, controls | engineer review | The machinery that moves the door is separable from the structural leaf and track it operates. Its recovery period turns on the owner's activity and the applicable Rev. Proc. 87-56 asset class, so it is an engineer-review item rather than an automatic short-life line. Either way it is the short-life piece of the door assembly and a fraction of the door's total cost. |
| Apron & taxilane paving | 15-year | Exterior aircraft-movement paving is generally a land improvement (Asset Class 00.3); raw grading and the underlying land remain non-depreciable. |
| Specialty high-bay lighting & dedicated power | 5-year | Lighting and circuits serving identifiable equipment or task functions may qualify as §1245 property; general building service lighting generally remains 39-year. |
| Fuel & oil systems, dispensing equipment | 15-year / engineer review | Site fuel and oil handling systems are generally land improvements, but may instead read as process equipment depending on function — the period follows that determination, so it is an engineer-review item. |
| In-floor drainage & oil-water separators | 15-year | Site drainage and separators are generally land improvements; portions integral to the building foundation may remain 39-year depending on the facts. |
| Epoxy floor coatings & hangar-floor finishes | 5-year | Specialty coatings serving an operational rather than structural purpose may qualify as short-life; coatings integral to the slab generally remain with the structure — an engineer-review item. |
| Hangar structure, roof & foundation | 39-year | The building structure, roof and foundation generally remain 39-year real property. |
2Typical results and what drives the spread
A typical range for airport hangars runs 10–18% — general industry experience for this property type, not an output of our engine. Hangars with extensive aprons, taxilane paving and on-site fueling run toward the top of the range; a simple box hangar on modest paving sits lower. Note that door cost does not drive the range the way owners expect, because the structural portion of the door stays with the shell. Either way this is not a promise for any specific building — see by the numbers.
3By the numbers (original data)
4What a study costs for this type
Study fees track building size, documentation quality and whether an on-site inspection is performed. An airport hangar study typically runs in the $5k–18k range — an indicative band, not a quote, since the fee scales with depreciable basis. See the pricing guide for how Cost Seg Smart's fees scale by basis and which providers publish prices at all; most competitors are quote-only.
5Provider comparison — the Top 5 for this asset class
Every provider below is scored on the same fixed rubric, weighting relevant airport hangar evidence most heavily. Facts are drawn from each provider's public materials and dated.
| Provider | Score* | Relevant airport hangar evidence | Profile | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cost Seg Smart site owner Engineering-first Best published pricing Best for virtual delivery Most transparent turnaround | 9.3How this score is built (sub-score ÷ 5 × weight):
| Dedicated page or article source · as of Jul 2026 | Profile → | ||||||||||||||||||||||||||||||||
| Engineered Tax Services (ETS) Engineering-first · National (West Palm Beach, FL) Best for national on-site coverage | 8.4How this score is built (sub-score ÷ 5 × weight):
| Dedicated page / named case study source · as of Jul 2026 | Profile → | ||||||||||||||||||||||||||||||||
| RE Cost Seg Engineering-first · National (Houston, TX) Best published pricing Best for virtual delivery Most transparent turnaround | 7.7How this score is built (sub-score ÷ 5 × weight):
| Generic coverage only source · as of Jul 2026 | Profile → | ||||||||||||||||||||||||||||||||
| Baker Tilly National accounting/advisory · National (Chicago, IL) Best for national on-site coverage Most transparent turnaround | 7.4How this score is built (sub-score ÷ 5 × weight):
| Generic coverage only source · as of Jul 2026 | Profile → | ||||||||||||||||||||||||||||||||
| Source Advisors Engineering-first · National (Fort Worth, TX) Best for national on-site coverage | 7.2How this score is built (sub-score ÷ 5 × weight):
| Generic coverage only source · as of Jul 2026 | Profile → |
Top 5 of 22 firms scored for airport hangar. See every firm's full profile and per-type standing in the provider directory.
*Score is this site's published rubric output (0–10) for airport hangar, weighting relevant property-type evidence most heavily (see how we compare) — click any score for its build-up. It is not a customer rating and no reviews are used. Cost Seg Smart is the site owner and is scored on the same rubric.
6Is it worth it — break-even
Reclassifying 10–18% of a hangar's depreciable basis into 5-, 7- and 15-year pools brings deductions forward. Be aware that this range sits below the commercial median, because the door and the shell that dominate hangar cost both stay long-life — so the break-even arrives later here than on most property types, and generally needs depreciable basis in the mid seven figures or a bonus year to clear a study fee. As always, the benefit is a timing shift: recapture on a near-term sale erodes it, so a hangar likely to change hands soon is a weaker candidate. To be clear, this study covers the real estate and site only — no aircraft.
7Frequently asked questions
Can the hangar door be reclassified as short-life property?
Mostly no, and this is the single most common misunderstanding about hangars. In McManus v. United States the Seventh Circuit treated an airplane hangar along with its doors and partitions as §1250 property, and Reg. §1.48-1(e)(2) treats assemblies of that kind as structural components of the building. The leaf, track and frame therefore generally stay 39-year. What can separate is the door's operating machinery — the hydraulic power unit, motor and controls — which is a modest fraction of the total door cost. If a provider's proposal shows a large short-life door number, ask which authority they are relying on.
Does this study cover the aircraft or ground equipment I own?
No. This is a real-property cost segregation study of the hangar building and its site improvements. Aircraft and independently owned rolling equipment are separate assets with their own tax treatment and are not part of the building basis being analyzed.
Is the apron and taxilane paving short-life?
Exterior aircraft-movement paving is generally treated as a 15-year land improvement, while the raw grading and underlying land remain non-depreciable. An engineer separates the improved paved surface from the dirt beneath it.
What drives whether my hangar lands high or low in the 10–18% range?
Site content, mainly. Extensive apron and taxilane paving, on-site fueling, and specialty high-bay power and lighting push toward the top; a simple box hangar on modest paving sits lower. Door size is not the lever owners expect it to be, since the structural portion of the door stays with the 39-year shell.
How are the floor coatings and drainage handled?
Specialty epoxy coatings serving an operational purpose may qualify as short-life, and in-floor drainage with oil-water separators is generally a land improvement, though portions integral to the foundation may stay 39-year. Both are fact-specific and reviewed individually.
Sources and authority consulted
- Rev. Proc. 87-56 MACRS asset classes, as reproduced in IRS Pub. 946 App. B (Table of Class Lives and Recovery Periods)
- IRS Cost Segregation Audit Techniques Guide (Pub 5653)
- McManus v. United States, 863 F.2d 491 (7th Cir. 1988), aff'g 700 F. Supp. 994 (W.D. Wis. 1987)
- Cost Seg Smart per-vertical component engine (modeled ranges + component authorities).
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