Cost Seg Authority Review (2026)
Pricing, methodology, audit defense, and where this provider fits.
Editorial note: This review is published by Cost Seg Smart, which appears as a competitor on this site. Public-facing data only — pricing, methodology, and credentials reflect what the provider publishes. Pricing as of May 2026.
- Pricing
- Contact for quote
- Turnaround
- 2-4 weeks
- Methodology
- Engineering-based
- Site visit
- Yes
- CPA support
- Available
- Guarantee
- Not publicly stated
- Property types
- Residential and commercial
- Founded
- Unknown
Pricing detail
Not published.
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 Authority uses engineering-based. 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 Authority works with residential and commercial. For investors evaluating providers by property type, our category rankings list multifamily provider comparison and commercial-focused firms.
Audit defense
CPA support: Available. Guarantee: Not publicly stated. 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
- Engineering-based methodology
- Serves both residential and commercial
Cons
- Limited public information
- Pricing not transparent
- Smaller market presence
Verdict — who this is for
Cost Seg Authority earns 7.0/10 in our scoring rubric. Best fit for commercial and multifamily owners who value engineering depth and traditional documentation. For investors comparing alternatives, the full 27-provider sortable table is on the homepage.
FAQ
How much does Cost Seg Authority charge?
Not published.
How long does a Cost Seg Authority cost segregation study take?
Turnaround: 2-4 weeks. This is consistent with the 4–8 week traditional engineering benchmark.
Does Cost Seg Authority require an on-site visit?
Yes. The IRS Cost Segregation Audit Techniques Guide (Pub 5653) does not require an on-site visit; it requires engineering-based methodology with documented support.
Cost Segregation Authority is the editor's pick when IRS audit risk is your #1 concern (zero adjustments across 30,000+ studies is the strongest claim in the category). For other situations:
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.