The 30-second answer
Yes — a cheap cost segregation study is real and IRS-defensible. A $495 study uses the same RSMeans 2026 cost data, the same MACRS classification rules per Rev. Proc. 87-56, and produces the same 40+ page CPA-ready report as a $5,000–$15,000 study from a traditional engineering firm.
The difference is delivery, not methodology. We run the analysis from satellite imagery, county assessor records, and structured property data — the IRS Cost Segregation Audit Techniques Guide does not require an on-site engineer visit. Studies tier by purchase price; entry is $495 for residential under $300K basis, and most rentals land at $895 or $995.
The price ladder by property tier
Cost Seg Smart pricing scales with purchase price, not by hourly rate. The full ladder for residential, multifamily, and commercial:
| Purchase price | Residential / STR / condo | Multifamily 2–4 unit | Commercial / MF 5+ |
|---|---|---|---|
| Under $300K | $495 | — | — |
| $300K–$700K | $895 | $995 | $995 |
| $700K–$1M | $995 | $1,095 | $1,995 |
| $1M–$2M | $1,495 | $1,795 | $3,295 |
| $2M–$3M | $1,995 | $2,295 | $3,295 |
| $3M–$4M | $2,995 | $3,295 | $4,995 |
| $4M–$6M | $3,495 | $3,995 | $6,295 |
| $6M–$10M | $4,495 | $4,995 | $7,795 |
| $10M–$25M | By proposal | By proposal | $10,995 |
| $25M+ | By proposal | By proposal | By proposal |
CPA wholesale is volume-based, typically 10–20% below retail (first study free). All prices include the 40+ page report, MACRS schedules, engineer attestation, and Form 3115 documentation for lookback studies.
Why traditional firms charge $5,000+
If you've shopped traditional cost segregation firms and balked at $5,000–$15,000 quotes for a $400K rental, you're not alone. The traditional industry was built for $10M+ commercial properties, and the pricing model never came down to fit residential investors. Most of a $10K study fee is project-managed labor — discovery calls, on-site engineer visits, manual report drafting from scratch each time. The IRS doesn't require any of that for a defensible study; it requires component-level documentation traceable to RSMeans cost data and MACRS classification per Rev. Proc. 87-56, which we produce identically.
The result: traditional firms can't profitably quote a $250K rental, so they don't. That's an accurate statement about their business model, not about the underlying tax math. At $495, the math on a $250K rental with 19% reclassification produces roughly $8,200 in Year-1 federal savings at a 24% bracket — a 16× ROI on the study fee. The full math, with three real properties, is here.
What "cheap" should NOT compromise
The line between "affordable engineered study" and "cheap junk that gets your client audited" is sharp. Four things you should never sacrifice on price:
- Engineering-based methodology. Avoid pure-software "DIY" tools that ask you to estimate component costs yourself. Component cost data must come from a calibrated engineering source (RSMeans, BLS PPI) — not your guess.
- Audit defense documentation. The report must include component-level cost basis citations, MACRS classification per Rev. Proc. 87-56, engineer attestation, and a methodology section that mirrors the 13 IRS ATG quality elements (Pub 5653 §3.4).
- CPA-ready output. The deliverable should be a 40+ page PDF your CPA can file from directly — depreciation schedule, Form 4562 mappings, Form 3115 §481(a) section. Spreadsheets, PowerPoints, and "summary memos" don't qualify.
- Refund / revision guarantee. If the report can't be filed, you should be able to get your money back. Cost Seg Smart offers free revisions if your CPA flags an issue and a full refund if we can't resolve it.
How "cheap" works at our price point
Software runs the analysis instead of an engineer reviewing each property by hand for 30+ hours. The cost-seg engine ingests property characteristics (address, basis, purchase date, property type, key building data), pulls cross-verified third-party data (county assessor, RentCast, OSM, satellite imagery, BLS PPI), and applies the same RSMeans 2026 component cost library + MACRS classification rules a human engineer would apply. Hundreds of decisions in seconds.
Engineers review flagged outputs through a 16-check QC gate (hard invariants, market regime checks, calibration outliers, input quality, narrative safety) instead of building every report from scratch. Same defensible result, dramatically lower delivery cost. Full process at /methodology/ and the minute-by-minute timeline at /under-1-hour-cost-segregation/.
Cheap vs traditional cost segregation: what you're actually paying for
A traditional firm's $5,000–$15,000 quote covers labor — project management, on-site engineer visit, manual report drafting. None of that is required by the IRS for a defensible study. The table below shows what's actually in the deliverable at each price point. On every row the IRS evaluates against, a $495 Cost Seg Smart study matches a $5,000 traditional study. The only row that differs is "on-site engineer" — which the IRS Audit Techniques Guide does not require.
| What you get | Cheap study (Cost Seg Smart, from $495) | Traditional firm ($5,000–$15,000) |
|---|---|---|
| 40+ page CPA-ready PDF | ✅ | ✅ |
| RSMeans 2026 cost data | ✅ | ✅ |
| MACRS classification per Rev. Proc. 87-56 | ✅ | ✅ |
| IRS ATG-aligned methodology (Pub 5653) | ✅ | ✅ |
| Engineer attestation | ✅ | ✅ |
| Form 3115 §481(a) for lookback | ✅ | ✅ |
| CPA-Ready Guarantee (refund if unusable) | ✅ | Varies by firm |
| Delivery time | Under 1 hour | 4–8 weeks |
| On-site engineer visit | No (not required by IRS) | Yes |
| Discovery call + scoping | Not needed (structured intake) | Yes (1–2 weeks) |
Red flags in cheap cost segregation studies
"Cheap" doesn't mean "low quality" — but some cheap studies on the market are low quality. The line between an affordable engineered study and unfileable junk is sharp. Four things a defensible cheap study must include:
- Engineering-based cost basis. Component cost data must come from a calibrated engineering source (RSMeans, BLS PPI) — not guesses, not flat percentages from a DIY spreadsheet. If a "study" asks you to estimate your own component costs, walk away.
- MACRS schedules with Form 4562 mapping. The deliverable must include a depreciation schedule that maps directly to IRS Form 4562. Spreadsheets, PowerPoints, and "summary memos" are not filable.
- Engineer attestation + methodology section. An IRS examiner cross-checks the report against the 13 quality elements in Pub 5653 §3.4. If the report doesn't have a methodology section explaining how component costs were derived and classified, an audit becomes much harder to defend.
- Refund or revision policy. If the report turns out to be unusable for your CPA, you should be able to get your money back. No-refund "final sale" cost seg studies are a red flag — there's no accountability for quality.
If a cheap study is missing any of these, the price isn't a discount — it's a downgrade. Every Cost Seg Smart report at every price tier includes all four.
A real $495 study: $250K long-term rental
Anonymized example of what the math looks like at the entry tier. Single-family long-term rental, $250K purchase price, residential 27.5-year baseline. Cost segregation reclassified roughly 19% of the depreciable basis into 5-, 7-, and 15-year property — a typical result for a sub-$300K residential property without major site work or specialty interior finishes.
| Purchase price (depreciable basis) | $250,000 |
| Reclassification % | ~19% into 5/7/15-year property |
| Year-1 federal tax savings @ 24% bracket | ~$8,200 |
| Study fee | $495 |
| ROI on study fee | ~16.6× |
Higher brackets and short-term rentals (STR loophole) push ROI higher. A $400K STR with 27% reclassification at a 37% bracket produces roughly $32,000 in Year-1 savings — a 65× return on the study fee. Same engine, same methodology, three more real properties walked through in Affordable Cost Segregation: What $495 Gets You.
When you'd pay more than $495
The $495 price applies specifically to residential properties under $300K basis. Above $300K, pricing scales with the basis ladder above. There are also genuinely complex situations where the math benefits from a traditional on-site engineering firm:
- Commercial properties over $5M with unusual specialty assets (hospitality, healthcare, ground-up new construction).
- Properties with significant recent renovations not visible in public data, where on-site verification of MEP and finishes materially affects the schedule.
- Multi-parcel coordinated acquisitions where the engagement requires manual splits — Cost Seg Smart's automated pipeline halts on these and routes to manual review.
- You specifically expect IRS examination and want the most maximalist documentation. (Our reports are still ATG-aligned and audit-defensible; this is about defense in depth.)
For everything else — residential, STR, small multifamily, small commercial under $5M — the from $495 tier produces the same engineering-based, IRS-defensible result a traditional firm would produce, in under an hour instead of 4–8 weeks. Run your specific property through the calculator to see what the math looks like.
Last reviewed: May 2026. Maintained by the Cost Seg Smart Editorial Team. For the deeper read with three full anonymized property examples and ROI math at 16×–40×, see Affordable Cost Segregation: What $495 Gets You.