For PE funds · express-wash roll-ups · multi-site operators · sale-leasebacks

Express car wash portfolio cost segregation

A car wash is mostly equipment and pavement wrapped around a thin shell — which is exactly why cost segregation reclassifies far more of the basis than a typical building. Across a roll-up, that acceleration compounds. Single sites priced by matrix from $2,495; portfolios and $4M+ sites by proposal.

Engineering-method · IRS Pub 5653 · Rev. Proc. 87-56 · industry-standard 2026 construction cost data

Why car washes are the highest-acceleration asset in the portfolio

For most commercial real estate, the building shell dominates the basis and cost segregation reclassifies a moderate share. Car washes invert that. Strip out the tunnel equipment, the vacuums, the reclaim system, and the acres of paving, and there isn't much "building" left on the 39-year schedule. That's why published studies on car washes commonly move 30–60% or more of depreciable basis into 5- and 15-year MACRS classes — and equipment-documented express tunnels can go higher.

For an institutional buyer that compounds. With 100% bonus depreciation restored under the One Big Beautiful Bill Act, every reclassified component is deductible in Year 1 — and across a roll-up of standardized express sites, the aggregate first-year deduction can materially affect fund-level returns.

How a car wash sorts into MACRS classes

Component classification per the Rev. Proc. 87-56 asset-class framework and IRS Pub 5653 engineering analysis. The equipment and site work carry the acceleration; the structure is a thin slice. (The study computes the dollar allocation from each property's actual configuration and documentation — we don't pre-assign a target percentage.)

Component MACRS class
Tunnel conveyor, arches & wash equipment
correlator, applicators, high-pressure pumps
 5-year
Dryers & blowers
high-horsepower drying systems
 5-year
Vacuum systems
per stall — often the second-largest equipment line
 5-year
Water reclamation & treatment
removable mechanical equipment
 5-year
Chemical delivery, tunnel controls & pay stations / POS
frequently six figures on multi-lane sites
 5-year
Signage
pylon / monument / directional
 5–7-year
Paving, queue lanes & vacuum-pad concrete
express sites need deep queuing
 15-year
Site drainage & oil-water separators
land improvement
 15-year
Canopies, lot lighting, fencing & landscaping
site improvements
 15-year
Tunnel structure, equipment room & office
the thin shell that stays long-life
 39-year

Reclassification share depends on wash configuration (tunnel length, vacuum count, reclaim), how much equipment was in the acquisition basis, and documentation quality. Industry ranges are general observations, not predictions for a specific site.

Illustrative: a $4.5M express tunnel acquisition

Illustrative only — real estate plus operating wash, ~130-ft tunnel, ~24 vacuum stalls, reclaim system, equipment documented in the purchase-price allocation. Actual results depend on configuration, documentation, and entity tax position.

Asset
Express exterior tunnel, real estate + operating wash (turnkey)
Depreciable basis
$4,500,000 (after carving out land + §197 intangibles)
Illustrative 5-year personal property
~45% — tunnel equipment, dryers, vacuums, reclaim, pay stations
Illustrative 15-year land improvements
~28% — paving, queue lanes, drainage, canopies, lighting
Remaining 39-year shell
~27%
Year-1 deduction (100% bonus)
~$3.3M accelerated into Year 1 vs ~$115K straight-line

Figures are illustrative and rounded; they are not a prediction for any specific property. Documented equipment cost is booked at actual value and supersedes modeled estimates. State conformity to §168(k) varies. Confirm treatment with your CPA before filing.

Pricing

Single sites are priced by a transparent matrix: $2,495 under $1M basis, $3,995 at $1M–$2M, $5,995 at $2M–$4M. Sites above $4M of basis and multi-site portfolios are quoted by proposal so we can scope the equipment allocation and per-site documentation properly.

Every study is CPA-ready with component-level MACRS schedules, methodology, and source documentation, and includes Form 3115 §481(a) workpapers for lookback engagements. Order a single site on the order page, or request a portfolio proposal below.

Portfolio questions

Why are car washes such strong cost-segregation candidates for a portfolio?
Because so little of a car wash is the building. The value concentrates in equipment (tunnel conveyor, dryers, vacuums, reclaim, pay stations — 5-year personal property) and site work (paving, queue lanes, drainage, canopies — 15-year land improvements), with only a thin 39-year shell. Published industry studies commonly reclassify 30–60%+ of depreciable basis, and equipment-documented express tunnels can go higher. Across a roll-up or multi-site acquisition, that acceleration compounds — and express-wash layouts are standardized enough to study systematically.
How do you handle a multi-site or roll-up acquisition?
Each site is studied individually — tunnel length, vacuum count, reclaim, and site work differ from location to location — but the process scales across a portfolio with consistent methodology and documentation standards. When the transaction includes purchase-price allocations or equipment schedules per site, the equipment is captured at documented (observed) cost rather than modeled estimate, which is the most defensible result for an institutional buyer.
Our acquisition bundled real estate, equipment, and business goodwill. How is that handled?
Carefully — and this is where many studies go wrong. A bundled operating-business purchase often includes goodwill, customer lists, and trade names, which are §197 intangibles and are NOT depreciable building basis. Those must be carved out, not swept into the cost-seg study. We flag the acquisition scope at intake and rely on the purchase-price allocation to separate depreciable real and personal property from intangibles, so the study stands up under examination.
What about a sale-leaseback?
Sale-leasebacks are common in the express-wash space and fully compatible with cost segregation — the depreciation belongs to whoever owns the real estate and the qualifying components. We scope the study to the ownership structure and the basis that actually transfers, and coordinate with your tax team on the entity that claims the deductions.
How is a car wash priced, and what about large or portfolio deals?
Single sites are priced by a transparent matrix: $2,495 under $1M of basis, $3,995 at $1M–$2M, and $5,995 at $2M–$4M. Sites above $4M of basis and multi-site portfolios are quoted by proposal so we can scope the equipment allocation and per-site documentation properly. Every study is CPA-ready with component-level MACRS schedules, methodology, and source documentation.
Can we run lookback studies on washes already in the portfolio?
Yes. A lookback study recovers all previously-missed accelerated depreciation in the current tax year via IRS Form 3115 and a Section 481(a) adjustment — no amended returns. Because car washes are so heavily weighted to 5- and 15-year property, the catch-up on washes held for a few years is often substantial. We can run these portfolio-wide alongside new acquisitions.

Scope your car wash portfolio.

Send your acquisition list with per-site basis and any purchase-price allocations, and we'll come back with a portfolio proposal and an estimated aggregate Year-1 deduction.

See the car wash sample report · read why car washes accelerate so well · audit defense