Traditional cost segregation firms aren't gouging when they quote $10,000 — they're honestly charging for overhead. On a typical $10,000 study, roughly $2,000 goes to engineer site visits, $2,000 to sales commissions, $5,000 to engineering and report production, and $1,000 to firm overhead and audit support. Automated providers eliminate the site visit and sales overhead, which is why the same engineering output can ship at $795. When the property is complex enough to need on-site engineer judgment, the $10,000 is fair. For standard residential and short-term rentals, it's not.
When a traditional firm quotes you $10,000 for a cost seg study on a $900K Airbnb, they're not gouging. They're covering a two-engineer site visit, a 6-week scheduling queue, and a 25% sales commission. Here's what the $10,000 pays for — and why we don't have any of it.
This post is an honest breakdown of where traditional cost seg pricing goes. Not a takedown. Traditional firms run real businesses with real overhead, and their pricing reflects their cost structure. The question for a buyer isn't "who's cheaper" — it's "am I paying for overhead that adds value for my specific property, or am I paying for overhead I don't need?"
Where $10,000 actually goes
The rough split inside a $10,000 traditional cost seg study:
The takeaway: the engineering itself — the RSMeans analysis, the MACRS classifications, the report — is maybe half the total fee. The other half is delivery model overhead. And the delivery model overhead is exactly what you're making a decision about when you choose between a traditional and an automated provider.
The four overhead buckets, unpacked
Site visit overhead
$1,500 – $3,000 per studyOne or two engineers travel to the property, often a half-day or full-day walkthrough. This is travel (flights or drives), lodging if out-of-market, billable engineer hours (typically $150–$250/hour), and scheduling coordination. For a residential property in a standard market, this adds real cost without materially changing the classification outcome, because the component list for an SFR or STR is well-established. For unusual commercial buildings, the in-person review genuinely catches things. Whether a site visit is actually required is covered here — the IRS Audit Techniques Guide does not require one.
Sales commission
15% – 25% of study feeTraditional firms typically pay outside sales reps or in-house BDRs 15–25% of the study fee. On a $10,000 study, that's $1,500–$2,500 going to the person who sold the job, not the person who engineered it. This is a normal B2B sales cost structure. It exists because cost seg studies require a sales conversation — educating the customer, answering objections, coordinating delivery. That sales conversation doesn't happen in an automated flow, so the cost isn't there.
Scheduling queue
Embedded in engineering feeTraditional firms typically deliver in 4–8 weeks. You're paying for a slot in their engineering pipeline. The queue exists because in-person engineering is throughput-limited — one engineer can only walk one property per day, and reports require sequential review. Automation removes the throughput constraint. Reports generate in under an hour because there's no scheduling constraint to price around. You're not paying for a queue position because there's no queue.
Audit support and firm overhead
$1,000 – $1,500 per studyWritten audit documentation is standard at any legitimate firm. Additional audit hours — phone consultations with auditors, revised classifications if requested — vary by firm. Some include a few hours; others charge hourly if an audit occurs. Firm overhead covers PE licensing, E&O insurance, office rent, management — the normal cost of running an engineering practice. All legitimate firms have this layer; automation reduces it but doesn't eliminate it.
What's NOT in the $10,000 (watch for these)
A few things that are sometimes extra at traditional firms — worth asking about before signing.
- Rush fees. Standard turnaround is 4–8 weeks; expedited turnaround is often an upcharge of $1,500–$3,000.
- Revisions. If your CPA requests format changes or additional documentation, some firms charge hourly. Others include a revision round. Clarify upfront.
- Audit hours beyond the written report. If you get audited and need phone consultations with the examiner, some firms charge hourly ($250–$500/hour).
- Form 3115 for prior-year lookback. Sometimes quoted separately for older properties. See here for how lookback studies work — it's bundled in our pricing, but it's a separate line item at some traditional firms.
- Additional properties or units. Multi-building portfolios typically get quoted per-building with a discount, but the base fee per building still applies.
None of this is deceptive — it's normal professional services billing. Just worth reading the scope of work carefully so there are no surprises after you sign.
Why we don't have most of this overhead
Our cost structure looks different because the delivery model is different.
- No site visits. County assessor data, satellite imagery, street-level photography, and RSMeans engineering cost databases replace the on-site walkthrough for standard properties. For complex commercial, we'd flag the property during intake and recommend a traditional firm.
- No sales team. You find us through search, run the calculator, and order directly. There's no BDR getting a commission from your fee.
- No scheduling queue. The engineering analysis runs against your property data in minutes. The report generates within an hour.
- Lower firm overhead. Engineering methodology is built once and applied at scale, rather than repeated per-study by hand.
The engineering output is the same: RSMeans cost data, IRS Rev. Proc. 87-56 MACRS classification, 40+ page report per the IRS Audit Techniques Guide, Form 3115 documentation for lookback. Full breakdown of what a $795 study includes is here. What's gone is the overhead layer that doesn't affect the classification outcome for standard properties.
When the traditional overhead is actually worth paying for
Cases where $10,000 is a fair price
Mixed-use commercial over $5M. Ground-floor retail with upper-floor offices and structured parking has fundamentally different systems on each floor. Tenant improvements, specialty equipment, and non-standard assets all benefit from on-site engineering judgment. The 20% of components automation misses in complex commercial is where in-person engineers earn their fee.
Specialty commercial: manufacturing, medical, lab. Process equipment, custom medical build-outs, and lab infrastructure have tax implications that benefit from engineer judgment rather than automated classification. If your property has specialty equipment worth more than the base building, you probably want the on-site review.
Heavy renovations or unusual construction. Historic properties, properties with significant recent renovations where the original and replacement systems overlap, or unusual construction (geodesic domes, shipping container builds, post-and-beam) — automation handles conventional construction well, and less well for unusual cases.
High-stakes audit defense. If you're planning aggressive reclassification percentages and expect IRS scrutiny, some owners prefer PE-signed reports from well-known firms for the reputational weight. Both approaches are legally defensible, but preference matters for peace of mind.
These are genuine carve-outs, not rhetorical concessions. Traditional firms deliver real engineering value on the properties they're designed for. The problem isn't traditional firms; the problem is a one-size-fits-all pricing model that gets applied to properties where the overhead doesn't produce proportional value. Some owners explore DIY alternatives — we explain where those work and where they fall short. For standard residential and STR properties, see our affordable cost segregation options starting at $495.
How to read any cost seg quote
Two questions cut through pricing noise, regardless of whether a provider quotes $795 or $15,000. (For a full pricing breakdown across providers, start there.)
- What's the scope of the engineering work? RSMeans cost data, MACRS classification, 40+ page report, Form 3115 support — these are standard. If a provider can't show you a sample report, move on.
- What does the overhead in the price get me? Site visit? On-site engineer judgment? PE signature? Extra audit hours? Rush delivery? If the overhead items don't help your specific property, you're paying for capability you won't use.
For a $400K STR in Nashville, the overhead items don't help — the component list is standard, the property is one building with one use, and the engineering output is the same either way. For a $12M mixed-use commercial building with ground-floor restaurant and upper-floor medical offices, the overhead items absolutely help. Match the provider to the property. Our full guide to choosing a provider walks more questions, and the math for smaller properties is covered separately. For current market pricing across providers, Cost Segregation Reviews tracks rates.
Frequently asked questions
Delivery overhead — site visits, sales commissions, scheduling queues, and firm overhead typically account for about half the fee. The engineering analysis itself (RSMeans data, MACRS classification, report production) is the other half. Traditional firms aren't overpricing — they're honestly charging for their cost structure. Whether that structure adds value depends on the property: complex commercial yes, standard residential no.
For properties that benefit from on-site engineering judgment: mixed-use commercial over $5M, specialty commercial (manufacturing, medical, lab), properties with unusual construction or heavy recent renovations. In those cases, the overhead delivers proportional value. For standard residential, short-term rentals, and most commercial under $5M, the engineering output is substantively similar and the price premium is not justified by meaningful differences in the deliverable.
Engineers document building components, specialty equipment, and tenant improvements that aren't visible in public records. For unusual or specialty properties, this identifies assets that automated classification may miss. For standard residential and most commercial, the component list is well-established and doesn't materially differ from what automated analysis produces. The IRS Cost Segregation Audit Techniques Guide does not require a site visit — it requires documented methodology, which can be produced either way. Full detail on site visit requirements here.
For standard residential, STR, and most commercial properties under $5M — yes, the engineering output is substantively the same because both approaches use RSMeans cost data, IRS Rev. Proc. 87-56 MACRS classifications, and produce reports that meet the Audit Techniques Guide standards. For complex commercial over $5M or specialty properties, the on-site engineering judgment in a traditional study catches non-standard components that automation may miss, and the price difference becomes meaningful. The honest answer is property-dependent. See our full breakdown of what $795 includes.
Yes. Automated cost seg providers use engineering-built methodology and engineer-reviewed component libraries. The automation applies that engineering logic to each property. For most residential and STR properties, this is equivalent to having an engineer perform the classification manually — because the classifications are rule-based applications of Rev. Proc. 87-56 and the ATG, not subjective judgment calls. For properties where engineer judgment materially changes the outcome (complex commercial, specialty), traditional firms with on-site PE review can add value.
Rough rules of thumb: single-use residential (SFR, STR, duplex), single-use commercial under $5M, standard construction (wood frame, steel frame, concrete) — standard. Mixed-use commercial, specialty commercial (manufacturing, medical, lab), unusual construction (historic, domes, containers), properties with significant tenant improvements or recent heavy renovations — complex. If you're not sure, most automated providers (ours included) will flag complex properties during intake and recommend alternatives if needed.