Cost segregation for ambulatory surgery centers (ASCs)
An ASC is an operating theater wrapped in a shell. What accelerates isn't the walls — it's everything feeding the OR table: piped gases, isolated power that keeps a case going through a fault, HEPA-filtered air pushed down over the sterile field, and the sinks and sterile-processing loops that make the room usable. Most of that support runs to identifiable surgical equipment, which is where the argument gets strong.
| Modeled reclass range | 15–35% |
|---|---|
| Typical study fee (Cost Seg Smart) | See pricing guide |
| Recovery periods captured | 5-, 7- and 15-year vs the 39-year shell |
| Delivery | Engineering-based; virtual or on-site depending on the provider |
1What reclassifies in a ambulatory surgery centers (ASCs)
In a ambulatory surgery center, cost segregation typically reclassifies 15–35% 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) |
|---|---|---|
| Medical gas & vacuum piped to the ORs — O₂, medical air, surgical vacuum, nitrous | 5-year | May qualify where the distribution terminates at booms and outlets serving identifiable surgical equipment rather than the building generally; the equipment-serving line from Hospital Corp. of America v. Commissioner is on point for the OR runs, less so for corridor headers. |
| OR isolated power system & isolation panels | 5-year | Generally follows the surgical equipment it protects — ungrounded power exists to keep identifiable OR devices running through a first fault; a study should tie each panel to the room it serves. |
| Dedicated OR HVAC — HEPA/laminar-flow supply, high air-change terminal units | engineer review | Air handling dedicated to maintaining the sterile field over identifiable surgical equipment can be arguable, but base-building distribution and comfort conditioning stay 39-year; depends on how cleanly the dedicated portion is metered and ducted. |
| Nurse-call & clinical low-voltage — code-blue, integration cabling, room controls | 5-year | Special-purpose wiring serving clinical function rather than general building operation; ordinary data/telephone cabling for the offices does not ride along. |
| Scrub sinks & sterile-processing plumbing — decon sinks, RO feed to washers/sterilizers | 5-year | Specialty plumbing serving identifiable processing equipment may qualify; standard staff-restroom and break-room plumbing stays with the shell. |
| Millwork & casework — OR supply cabinets, sterile-core shelving, control-desk casework | 5-year | Non-structural fixtures generally reclassify; anything load-bearing or permanently integral to the building remains 39-year. |
| Backup generator & transfer switchgear | engineer review | Emergency power dedicated to life-safety and identifiable clinical loads can be arguable for the branch serving equipment, but the portion carrying general building loads stays 39-year — allocation is the whole question. |
2Typical results and what drives the spread
Across standardized ambulatory surgery center configurations, the engine models an accelerated share of roughly 15–35%. A multi-OR center with heavy sterile-processing and orthopedic or ophthalmic fit-out lands high in the range; a single-room procedure suite sits lower. These are modeled ranges, 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. See the pricing guide for current market bands; competitor fees are sourced there, not quoted in prose here.
5Provider comparison — the Top 5 for this asset class
Every provider below is scored on the same fixed rubric, weighting relevant ambulatory surgery center evidence most heavily. Facts are drawn from each provider's public materials and dated.
| Provider | Score* | Relevant ambulatory surgery center evidence | Profile | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RE Cost Seg Engineering-first · National (Houston, TX) Best published pricing Best for virtual delivery Most transparent turnaround | 7.9How this score is built (sub-score ÷ 5 × weight):
| Generic coverage only source · as of Jul 2026 | Profile → | ||||||||||||||||||||||||||||||||
| Cost Seg Smart site owner Engineering-first Best published pricing Best for virtual delivery | 7.8How 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 | 7.6How 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 | 7.3How this score is built (sub-score ÷ 5 × weight):
| Generic coverage only source · as of Jul 2026 | Profile → | ||||||||||||||||||||||||||||||||
| Cherry Bekaert Engineering-first · National (Richmond, VA; #1 Southeast) 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 ambulatory surgery center. 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 ambulatory surgery center, 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
ASCs pack short-life value densely because so much of the building exists to serve the ORs, so a modeled reclassification of 15–35% of depreciable basis is a realistic planning band rather than a promise. Pulling that share into 5- and 15-year pools moves deductions forward by years; on a purpose-built center the benefit generally clears a study fee once basis reaches the low seven figures, earlier where bonus depreciation is in play.
7Frequently asked questions
Does the medical gas system automatically qualify for 5-year treatment?
Not automatically. The runs that terminate at OR booms and outlets serving identifiable surgical equipment make the strongest case; shared corridor headers and the central manifold are weaker and may be viewed as building infrastructure. A defensible study allocates rather than sweeps the whole system into 5-year.
How is an ASC different from a medical office for cost-seg purposes?
A medical office is mostly exam rooms with pockets of clinical fit-out. An ASC is built around the ORs, so a much larger share of its systems — isolated power, laminar HVAC, sterile processing — serves identifiable surgical equipment, which is why the modeled range runs higher.
Can we accelerate the dedicated OR HVAC?
Sometimes. Air handling built specifically to hold a sterile field over identifiable surgical equipment can be arguable, but it needs an engineer to separate the dedicated laminar and high-air-change components from base-building comfort conditioning, which stays 39-year. It depends on the facts of how the system is zoned.
What about the backup generator?
Emergency power is a split. The branch feeding identifiable clinical and life-safety loads is more arguable; the portion carrying general building load stays 39-year. The generator's classification turns on a load allocation, not on the fact that it's labeled 'emergency.'
Do leasehold improvements in a leased ASC still work?
Yes — a tenant who paid for the fit-out generally depreciates those improvements, and qualified improvement property placed in service after the building was first used may be eligible for its own treatment. The analysis follows who holds the basis; a study should confirm that before classifying.
Sources and authority consulted
- Hospital Corp. of America v. Commissioner, 109 T.C. 21 (1997)
- Rev. Proc. 87-56 (MACRS asset classes)
- IRS Cost Segregation Audit Techniques Guide (Pub 5653)
- Cost Seg Smart per-vertical component engine (modeled ranges + component authorities).
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