How Much Does a Cost Segregation Study Cost in 2026?

Cost segregation study prices range from $199 for automated software-based analyses to $15,000+ for full engineering studies with site inspections. Here's what each option includes and when each makes sense.

The cost of a cost segregation study depends on the approach you choose, your property type, and the level of detail required. In 2026, property owners have three main options: full engineering studies, DIY/software-based tools, and free calculators. Each serves a different purpose and price point.

Cost Segregation Pricing Comparison (2026)

Option	Price Range	Timeline	Site Visit	Best For
CostSegNow	$199	2 minutes	No	Residential & commercial under $2M
DIY Cost Seg	$495–$1,295	5–10 minutes	No	Residential & small commercial
CostSegregation.com (KBKG)	$495+	Minutes	No	Properties under $1.5M basis
R.E. Cost Seg (Rapid Report)	$950+	Days	Virtual	Small residential
Full Engineering Study (residential)	$2,800–$7,000	4–6 weeks	Yes	Properties over $1M basis
Full Engineering Study (commercial)	$5,000–$15,000+	4–8 weeks	Yes	Large commercial, audit defense
Free online calculators	Free	1 minute	No	Rough estimate only

Understanding the Three Tiers

Tier 1: Full engineering-based studies ($2,800–$15,000+)

A full engineering study is the gold standard. A licensed engineer or construction cost estimator physically inspects the property, photographs each component, and prepares a detailed report with component-by-component cost estimates tied to actual construction specifications. These studies typically take 4–8 weeks and cost $2,800–$7,000 for residential properties and $5,000–$15,000+ for commercial properties.

What you get: a comprehensive report with photographic documentation, detailed takeoff schedules with hundreds of line items, engineer certifications, and full IRS audit defense support. Firms like Madison SPECS, CSSI, and Duffy+Duffy operate at this level.

When this makes sense: Properties with a depreciable basis above $1–2 million, complex commercial properties (restaurants, hotels, mixed-use), newly constructed properties where actual cost records are available, and any situation where IRS audit risk is elevated.

Tier 2: Software-based and DIY tools ($199–$1,295)

Software-based tools use the same underlying IRS classification methodology as engineering studies but substitute statistical allocation models and construction cost databases for the physical inspection. They apply profiles calibrated against real engineering studies to estimate component allocations based on property type, size, age, and features.

CostSegNow sits at the most affordable end of this tier at $199. The analysis uses RCNLD (Replacement Cost New Less Depreciation) methodology with RSMeans 2024 construction cost data, calibrated against multiple real engineering studies. Reports include component detail tables, MACRS depreciation schedules, year-by-year depreciation comparisons, NPV analysis, and IRS methodology references.

Other software tools in this tier include DIY Cost Seg ($495 residential, $1,295 commercial) and KBKG's CostSegregation.com ($495+ for properties under $1.5M basis).

When this makes sense: Residential properties and commercial properties under $2 million basis, portfolio investors running cost seg on multiple properties, CPAs screening client properties to identify which warrant a full study, and any investor who wants fast results without waiting weeks.

Tier 3: Free calculators ($0)

Free calculators from firms like CSSI and O'Connor provide rough estimates based on minimal inputs — usually just property type, purchase price, and tax rate. They give you a general idea of potential savings but don't provide the component-level detail, depreciation schedules, or methodology documentation needed for actual tax filing.

These serve primarily as lead generation tools for the firms that offer them. They're useful for a quick sanity check but shouldn't be confused with an actual cost segregation analysis.

ROI: Is a Cost Segregation Study Worth the Cost?

The return on investment for cost segregation is typically dramatic, regardless of which tier you choose.

At a $199 price point, cost segregation becomes a no-brainer for virtually any rental property with a depreciable basis above $200,000. Even conservative estimates yield a 50:1+ return on investment.

What to Look for in a Cost Segregation Provider

Regardless of which tier you choose, the quality of a cost segregation study matters. Here's what to evaluate:

Methodology transparency. The provider should specify which IRS-recognized methodology they use (RCNLD, detailed engineering cost approach, or residual estimation). Avoid any provider that can't explain their methodology clearly.

Component-level detail. A quality report should itemize individual components (flooring, cabinetry, landscaping, etc.) with their MACRS classifications, not just show aggregate percentages. This detail is what a CPA needs for filing and what the IRS looks for in an audit.

Current tax law compliance. The report should correctly reflect current bonus depreciation rates, including the OBBBA 100% restoration for property placed in service after January 19, 2025, and the applicable rates for earlier years.

Depreciation schedules. Look for year-by-year depreciation schedules showing both the cost segregation scenario and the straight-line comparison. This is what your CPA needs to correctly file your return.

Legal citations. The report should reference the specific IRS Code sections, Revenue Procedures, and case law that support the classifications. This demonstrates the analysis is grounded in actual tax law, not arbitrary estimates.

Can You Deduct the Cost of the Study?

Yes. The fee paid for a cost segregation study is a deductible business expense for rental property owners. You can deduct the full cost in the year the study is completed, which further improves the already strong ROI. A $199 analysis that generates $25,000 in Year 1 tax savings effectively costs $126 after the tax deduction on the fee itself (at a 37% rate).