Cost Seg Smart Review (2026)

Pricing, methodology, audit defense, and where this provider fits.

Editorial disclosure: This review is published by Cost Seg Smart. We are reviewing our own service. The pros and cons listed are honest; competitor reviews on this site apply the same scoring rubric.

Pricing detail

$495 (<$300K), $895 ($300K–$700K), $995 ($700K–$1M), $1,295 ($1M-$2M), $1,595 ($2M-$5M), $1,895 ($5M+). MF 2-4: $995-$1,995. MF 5+/Commercial: $995-$2,995.

Pricing reflects publicly advertised rates as of May 2026. Quotes for specific properties may differ. The same IRS-compliant methodology applies regardless of price tier — what changes is delivery, engineering depth, audit defense scope, and turnaround.

Methodology and process

Cost Seg Smart uses engineering-based (industry-standard 2026). All US cost segregation studies — including this one — must follow the engineering-based methodology described in the IRS Cost Segregation Audit Techniques Guide and apply MACRS classification per Rev. Proc. 87-56. The framework is set by federal law; what varies across providers is execution depth, documentation, and audit defense scope.

Property-type fit

Cost Seg Smart works with all residential and commercial. For investors evaluating providers by property type, our category rankings list side-by-side STR provider rankings and MF-specialist firms.

Audit defense

CPA support: CPA-Ready Guarantee (free revisions). Guarantee: 100% money-back. Audit defense scope varies materially across providers, ranging from explicit IRS representation to no defense beyond report delivery — see the scoring methodology for how we evaluate this dimension.

Pros

• Lowest pricing for a FULL engineering study — $495 for a complete 40+ page report (not a calculator, not a screening tool)
• Fastest turnaround — reports delivered in under 1 hour
• 100% money-back guarantee + free CPA revisions
• Full 40+ page reports with component-level MACRS schedules, audit defense documentation, and Form 3115 support
• Free property tax analysis included — checks if you're overpaying relative to comparable properties
• Free PAD monitoring — component replacement check-ins at 6, 12, and 24 months to identify additional deductions

Cons

• No physical site visit option
• Newer company — less track record than established firms
• May not be ideal for very complex 100+ unit properties

Verdict — who this is for

Cost Seg Smart earns 8.5/10 in our scoring rubric — best for sub-$1M residential and STR investors who prioritize speed and price. The aggregate reflects the segments where CSS is the best fit; for property types outside its sweet spot (hotels, large institutional commercial, complex MEP), segment-specific scores drop. We disclose: this is our own service. See scoring methodology for the rubric.

FAQ

Pricing and operational details reflect public information as of May 2026. Provider corrections welcome via the submission form. This review is not legal, tax, or financial advice — confirm cost segregation suitability with your CPA before ordering a study.