Comparison

Cost seg comparison:
every firm, side-by-side.

Updated September 22, 2026 · competitor facts checked against each firm’s own site

In one paragraph

Every credible cost-segregation firm uses the same underlying methodology — industry-standard 2026 construction cost data, MACRS classification per Rev. Proc. 87-56, IRS Cost Segregation Audit Techniques Guide (Pub 5653) framework. The difference is the labor model: traditional engineering firms send someone on site and take weeks, and the ones that publish prices list ranges of roughly $3,000–$12,000 (Engineered Tax Services $3,000–$12,000 and 4–6 weeks; Madison SPECS a typical $4,000–$11,000), while many others, CSSI among them, quote per property; DIY cost-seg software runs ~$495–$995 for residential with 2–4 hours of customer time per property; Cost Seg Smart applies the same methodology to structured property data, is delivered in 1–2 business days, and starts at $495 for residential under $300K basis.

The three tiers of the cost-seg market

The cost-segregation market has stratified into three pricing tiers, each with a different delivery model:

  • Traditional engineering firms (quoted per engagement; published ranges run about $3,000–$12,000): Engineered Tax Services, Madison SPECS, CSSI and similar. On-site engineering and multi-week engagements (ETS publishes 4–6 weeks). The published eligibility floors are lower than many assume: Madison SPECS starts at a $1M property or a $750K renovation. Right fit for hospitality, REIT-scale, ground-up commercial and specialty assets.
  • Smaller specialty firms (usually quoted per property): ELB Consulting, Bedford Cost Segregation and similar. Often on-site or hybrid. We have not independently verified their current prices or timelines. Right fit for owners who want a small-firm engagement relationship.
  • Automated and DIY (from $495 residential): Cost Seg Smart and DIY software. Same methodology, structured-data delivery, residential and small-commercial focus. Right fit for residential, STR, small multifamily, small commercial under $5M.

Which tier is right for you?

Three questions to ask, in order:

  1. Is the property over $5M with hospitality, specialty assets, or ground-up commercial? → A traditional engineering firm (ETS, Madison SPECS, CSSI, or similar).
  2. Is the property $1M–$5M commercial with non-public construction details, or do you specifically value a small-firm engagement? → A traditional or smaller specialty firm, quoted per property.
  3. Otherwise (residential, STR, small MF, small commercial under $5M, or you want fast and affordable)? → Cost Seg Smart. Same methodology, dramatically lower study fee, faster turnaround.

DIY cost-seg software sits at the same price point as Cost Seg Smart's residential tier, but transfers the labor and audit-defense responsibility to the customer. See the detailed DIY-vs-automated comparison.

Detailed head-to-head comparisons

Pick a firm to see the full side-by-side comparison: pricing for typical residential, comparison table, methodology overlap, where each firm wins, and 5-question FAQ. New to this? Start with the overview of cost segregation companies, or find a provider near you.

Cost segregation vs. other tax strategies

Cost segregation is often confused with adjacent tax-deferral strategies. These comparison pages walk through where each strategy applies and how they stack:

  • Cost segregation vs. 1031 exchange — different timing (ownership vs. disposition), different deferral type (depreciation vs. capital gains), routinely stack in the same year.
  • Cost segregation vs. Opportunity Zones — OZ defers capital gains (and eliminates them after 10 years on appreciation); cost seg accelerates depreciation. QOFs can claim cost seg on their underlying property.
  • Cost segregation vs. bonus depreciation alone — bonus depreciation is the rate (100% post-OBBBA); cost segregation determines how much of basis qualifies for that rate. Without cost seg, only 3–6% of basis is bonus-eligible; with cost seg, 18–35%.
  • Cost segregation vs. appraisal — different purpose entirely: an appraisal sets market value for a transaction; a cost seg study reclassifies basis for depreciation. They routinely run together after a purchase.
  • Cost segregation without bonus depreciation — even at 0% bonus, moving basis into 5-, 7-, and 15-year MACRS front-loads deductions versus a 27.5- or 39-year schedule; the benefit is smaller and spread over a few years, but a study still pays off.

The methodology is shared

This is the consistent thread across every comparison: the technical machinery is the same. Every credible firm — major, mid-tier, automated, DIY — uses industry-standard 2026 construction cost data, MACRS classification per Rev. Proc. 87-56, and the IRS Cost Segregation Audit Techniques Guide framework. Component-level documentation, a reviewed deliverable, and Form 3115 §481(a) lookback support are all standard. The deliverable is a 30–45 page CPA-ready PDF in nearly every case.

What varies is the labor model — who does the work, how long it takes, how much it costs, and whether on-site engineering is part of the analysis. For residential and small-commercial properties under $5M, the structured-data approach Cost Seg Smart uses produces the same MACRS classification result as a traditional on-site study, at a fraction of the cost and time. For larger and more complex commercial properties, on-site engineering captures details a remote analysis can miss. Pick the firm that fits the property.

Next steps

If you want to see the math on a specific property before deciding, our free calculator gives a Year-1 estimate in 30 seconds. For full methodology details see /methodology/; for pricing tiers see /cheap-cost-segregation/; for the speed argument see how delivery within 1–2 business days works.

How we score and rank firms

This comparison is published by Cost Seg Smart. We are an operator in this market — one of the firms in the table — and that should be visible to the reader, not hidden. The comparisons below are constructed under the following rules:

  • What we measure. Four observable, externally-verifiable dimensions: typical residential study fee, typical turnaround for a $500K–$2M residential property, methodology disclosure (does the firm publish their cost-data source, MACRS classification basis, and reconciliation approach), and the segment each firm targets best (residential, mid-commercial $1M–$5M, large commercial $5M+).
  • What we don't measure. Customer-service quality, sales-process aggressiveness, "premium feel," and other subjective dimensions. Those vary firm-to-firm and operator-to-operator; we don't have a defensible way to score them across vendors.
  • Where the data comes from. Public pricing on each firm's website where available; otherwise from quotes shared by buyers, summarized engagement letters, and the 2026 cost-segregation pricing market survey at costsegregationpricing.com. We update when public pricing changes. For firms that quote per-engagement only, we note the typical range without claiming precision.
  • Methodology-overlap claim. When we say every credible firm uses "the same underlying methodology," we mean: industry-standard 2026 construction cost data unit cost data (or equivalent commercial cost-data source), MACRS classification under Rev. Proc. 87-56, and the IRS Cost Segregation Audit Techniques Guide (Pub 5653) framework. This is verifiable from each firm's own deliverable when you receive one. The labor model (site-visit engagement vs. structured-data) is what varies.
  • Editorial judgment we apply. Tier assignment ("major firm," "mid-tier firm," "automated/DIY") is a judgment call based on price + headcount + market positioning, not a regulated taxonomy. Reasonable people could place ELB or Bedford in the "major firm" tier depending on engagement size. We default to the categorization that's most useful to a residential or small-commercial buyer, which is the audience we serve.
  • Conflict-of-interest disclosure. Cost Seg Smart benefits financially when a reader chooses our automated tier over a competitor. We mitigate this by (a) showing the math when a different tier is the right fit ("if your property is over $5M with hospitality or specialty assets, a major firm is the right fit — not us"), and (b) linking to the dedicated head-to-head pages so the reader can see the case for the other firm in the same depth we make for ourselves.
  • Confirm directly. Pricing and scope change. Before signing an engagement, confirm with the firm directly. This page is a starting point, not a contract.

For the full 2026 cost-seg pricing market survey across all major US providers, see our companion site costsegregationpricing.com. For customer-reported reviews of major cost-seg providers, see costsegregationreviews.com (a review site we operate). For typical reclassification ranges by property type, see the bands we publish. For deeper pricing analysis, see 2026 pricing research.

Change log

Substantive edits since first publication:

  • 2026-05-22: Added "How we score and rank firms" methodology section with conflict-of-interest disclosure. Added this change log. Updated last-reviewed date format.
  • 2026-05-01: Pricing tier refresh; added mid-tier head-to-head page. Aligned hero copy with the 2026 pricing dataset.
  • 2026-01-15: First publication. Eight-firm comparison + four strategy comparisons (1031, OZ, bonus alone, DIY).

Last reviewed: 2026-05-22. Maintained by the Cost Seg Smart Editorial Team. All comparisons are informational; firm names are trademarks of their respective holders. No affiliation. Confirm pricing and scope directly with each vendor.

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