Cost Segregation Study: When It Pays and When It Doesn’t

A cost segregation study pays when three things line up: a depreciable basis large enough to beat the provider’s fee, a hold period past five years, and income the accelerated deduction can actually offset. Miss any one of those and you are buying a tax document you cannot use.

Dave Clark of Veritax Advisors spends more time talking investors out of studies than into them. He has seen real benefit on properties with a basis as low as $100,000, and he has also told high-income landlords with no net passive gain to save their money.

This guide runs your property through the same filter: how basis is calculated, where the size floor actually sits, who should skip it entirely, what depreciation recapture costs you at exit, and when you can catch up missed depreciation without ordering a study at all.

From the Real Estate Pros Show

This article draws on an interview with Dave Clark of Veritax Advisors on the Real Estate Pros Show, hosted by Scott Bursey.

How a Cost Segregation Study Is Actually Priced Out: Start With Basis

The first number any credible provider asks for is depreciable basis, not purchase price and not current value. Clark defines it plainly: purchase price minus land, plus improvements and renovations you have made to the property.

That distinction kills a lot of deals before anyone orders anything. A $600,000 property in a high-land-value market may carry a basis well under what the owner assumed, and the fee math changes accordingly. A $300,000 property that took $90,000 in renovation work may carry more depreciable basis than the headline price suggests.

Two defaults make this worse than it needs to be. Clark says most accountants run a flat 80/20 land-to-building split and then straight-line the building over 27.5 years. The 80/20 split is a convenience, not an appraisal — it is applied the same way in a dense urban submarket as in a rural one, and it is rarely supported by anything property-specific. The 27.5-year schedule then spreads whatever basis survived that split evenly across nearly three decades.

A study exists to break that building figure into shorter-lived components so more of the deduction lands early. Whether that is worth paying for is a straight comparison: the fee against the present value of pulling deductions forward.

Run your own basis number before you call anyone. Pull the purchase settlement statement, find the land allocation your accountant actually used, and add up capitalized improvements since acquisition. If you cannot produce that figure in ten minutes, you are not ready to evaluate a quote.

The Minimum Property Size Where a Study Still Makes Sense

There is no universal floor. Clark has seen studies produce benefit at a $100,000 to $120,000 basis, and he is explicit about why: “our fees aren’t astronomical.” The threshold moves with what the provider charges, full stop.

The widely repeated minimums — not worth it under $500,000, not worth it under $1 million — are real, but they describe specific firms’ cost structures rather than the underlying math. Clark notes that some cost segregation firms simply will not take work under half a million and refer those owners out. That is a business decision about where their engineering hours pay, not a judgment that smaller properties contain no accelerable components.

So the question to ask a provider is not “what is your minimum?” It is: given my basis of $X, what is the projected first-year deduction, and what is your fee? If a firm cannot answer that before you engage, keep calling. Clark’s shop runs a no-cost benefit analysis for exactly this reason, and most reputable providers offer some version.

The other half of the equation is your marginal tax rate. A $40,000 accelerated deduction is worth very different amounts to two owners with the same property. Low-bracket owners need a larger deduction to clear the same fee.

One caution on cheap quotes. Clark is blunt about the $500 to $1,500 software-generated studies now flooding the market — they are built from photos and a template, and in his view they routinely fail to capture the depreciation a property-specific engineering review would find. A low fee that produces a small, poorly documented result is not a bargain.

I know I sell cost segs for a living, but you don’t actually need a cost segregation study to catch up depreciation that has not been taken.

— Dave Clark, Veritax Advisors

Who Should Not Do a Cost Segregation Study

Clark names three profiles who should not order one, and the first two are straightforward.

• Fix-and-flip operators. You are selling, not holding. There is no multi-year depreciation schedule to accelerate, and flip inventory is generally treated as inventory rather than a depreciable asset.
• Anyone not holding past five years. The benefit of a study is timing — you pull deductions forward and pay for the privilege. Sell inside five years and recapture arrives before the time value of the acceleration has earned back the fee.
• High-income long-term holders with no positive net passive cash flow at year end. This is the one that surprises people.

That third case is worth sitting with. A passive accelerated deduction offsets passive gain. If your rental portfolio nets to zero or negative at year end, the deduction has nothing to work against in the current year, and your W-2 or business income is out of reach. As Clark puts it, it “is not going to affect anything but their passive gain.”

Real estate professional status changes the arithmetic entirely. With REP status, Clark says, whether a given property cash flows positive, negative, or breaks even stops mattering, because the depreciation is not property-specific — it can run against income across the portfolio. His example: three or four properties producing cash flow and one underperformer that is a good long-term asset but generates little revenue. Cost segregate the weak one and the deduction offsets income from the others.

Qualifying for REP status involves specific hour and participation tests. Confirm your status with your own tax advisor before building a plan around it.

Depreciation Recapture: The Risk Nobody Leads With

Clark calls recapture “the biggest downfall” of cost segregation, and it is the part the marketing skips. Every dollar of depreciation you claim — accelerated or straight-line — is a paper loss the IRS expects back when you sell.

The detail that catches owners off guard: recapture applies on an allowed or allowable basis. You owe it on depreciation you were entitled to take whether or not you actually took it. Clark names this as one of the two most common depreciation mistakes he sees: accountants advising clients not to depreciate so they can avoid recapture later. It does not work. You forfeit the deduction and still face the recapture.

This reframes the decision. Cost segregation is not creating a future tax bill out of nothing — the depreciation and its recapture exist either way. What the study changes is when you take the deduction, and therefore how large the recapture figure is at any given point in the schedule.

That is why Clark asks two questions before quoting any study: when do you plan to sell, and do you intend to 1031 exchange? An owner who answers “three years” and “no” is not a candidate, regardless of basis. An owner planning a fifteen-year hold with an exchange at the end is in a different conversation entirely.

If a provider quotes you a study without asking about your exit, treat it as a signal about how they sell.

Exit Planning: 1031 Exchange and the ‘Lazy 1031’

Clark describes two workable ways to handle recapture, and both require that you stay in real estate.

The conventional 1031 exchange. Sell and roll the proceeds into replacement property under the exchange rules, deferring gain and recapture. This is the familiar path and carries the familiar constraints — strict identification and closing deadlines, a qualified intermediary, and like-kind replacement property.

The “lazy 1031.” Clark’s term for a simpler sequence: sell the property as a normal taxable sale, acquire new real estate in the same tax year, and run a cost segregation study on the new acquisitions. The accelerated deductions from the new properties offset the gain and recapture from the sale. No intermediary, no 45-day identification clock — but the timing has to land inside the same tax year, and the new basis has to be large enough to generate deductions that actually cover the recapture.

The lazy 1031 is not a loophole so much as deliberate sequencing. It works because the deduction and the recapture show up on the same return.

Clark’s caveat on the third scenario is unvarnished: an owner who is selling because they have had enough and simply wants the cash has neither option. The recapture comes due and there is nothing to offset it with.

The practical takeaway is that exit strategy belongs in the decision at the front end, not the back. If your realistic plan is to cash out and leave the asset class, factor the eventual recapture into whether the study is worth doing at all.

Catching Up Missed Depreciation Without Paying for a Study

Here is the admission most providers will not make. Clark says it directly: “I know I sell cost segs for a living, but you don’t actually need a cost segregation study to catch up depreciation that has not been taken.”

If you have owned a rental for years and never claimed depreciation at all, that is a correction your accountant can make — and it is a separate question from whether acceleration is worth paying for. Ask about the catch-up first. If straight-line catch-up solves your problem, you have your answer and a study may be unnecessary.

Where a study still earns its fee on an older property is when the remaining basis is large enough. Clark says an owner ten or twelve years into a 27.5-year schedule can still go backward, identify depreciation sitting in the property, and pull it forward. The benefit is real, just smaller than it would have been.

Smaller because depreciation lapses. Every year you hold, basis comes down, so the chunk available to accelerate shrinks. That is why Clark says the biggest benefit sits with the owner who just bought — nothing has been consumed yet, and the full basis is available to reallocate into shorter-lived components.

The sequence for an existing holder:

1. Confirm whether depreciation has been claimed at all, and at what land allocation.
2. If none was claimed, price the catch-up before pricing a study.
3. If depreciation has been running, calculate remaining basis and get a free benefit analysis against it.
4. Only then compare the projected deduction to the fee.

Frequently asked questions

What is the smallest property basis where a cost segregation study still makes sense?

Dave Clark of Veritax Advisors has seen benefit at a depreciable basis of $100,000 to $120,000, well below the $500,000 or $1 million floors commonly quoted in the industry. His point is that the floor is a function of the provider’s fee, not a fixed rule.

Firms with higher engineering costs decline smaller work and refer it out. Ask a provider for a projected first-year deduction against your specific basis alongside their fee, and compare the two directly rather than relying on a published minimum.

How do you calculate depreciable basis for a rental property?

Depreciable basis is purchase price minus land value, plus improvements and renovations made to the property. It is not the current market value and not the price you expect at sale.

The land allocation is where most of the imprecision lives. Clark notes that many accountants default to a flat 80/20 building-to-land split regardless of the market, which can meaningfully misstate the figure your depreciation schedule is built on.

Does skipping depreciation let you avoid recapture when you sell?

No. Recapture is calculated on an “allowed or allowable” basis, meaning you owe it on the depreciation you were entitled to claim whether or not you actually claimed it.

Clark cites accountants advising clients to skip depreciation specifically to dodge recapture as one of the two most common mistakes he encounters. The owner gives up the deduction and still faces the recapture. Confirm the treatment of your own property with your tax advisor.

Can you catch up missed depreciation without ordering a cost segregation study?

Yes. If depreciation was never taken on a property, Clark says it can be caught up without a cost segregation study — the study is for accelerating depreciation into shorter-lived components, which is a different objective.

Ask your accountant about the catch-up before you pay anyone for a study. If straight-line catch-up resolves the issue, a study may add nothing you need.

Why would a high-income landlord with long-term rentals not benefit from cost seg?

Because an accelerated deduction on a passive rental offsets passive gain. If the portfolio does not produce positive net passive cash flow at year end, the deduction has nothing to work against in that year and cannot reach wage or active business income.

Real estate professional status changes this. With REP status, Clark says depreciation is no longer property-specific and can offset income across the portfolio, which is why the same study can be a clear yes for one owner and a clear no for another with an identical building.

The bottom line

Before you request a single quote, pull your settlement statement and your depreciation schedule and establish three numbers: current depreciable basis, your realistic hold period, and whether your passive income at year end can absorb a deduction. Bring those to your tax advisor and to any provider you contact — if the answer to any of the three disqualifies you, you have saved yourself a fee and found out what question you should actually be asking instead.