A comparison of 6 providers — what each does best, at what price, with what turnaround.
Different providers fit different buyer profiles. Here's the short version:
| Provider | Price range | Turnaround | Site visit | Audit support |
|---|---|---|---|---|
| Cost Seg Smart (this site's operator) | $495–$2,995 | Under 1 hour | Remote (photos + assessor data + plan documents) | Written audit defense included with every study |
| KBKG | $3,000–$25,000+ | 4–8 weeks | On-site required for most engagements | Add-on retainer |
| CSSI (Cost Segregation Services, Inc.) | $5,000–$30,000 | 6–10 weeks | On-site | Included; expert testimony available |
| Engineered Tax Services (ETS) | $5,000–$50,000 | 6–12 weeks | On-site | Included |
| Capstan Tax | $4,000–$20,000 | 4–8 weeks | On-site | Included |
| Local CPA + engineering review | Varies — typically $2,500–$10,000 | Varies | Depends | Depends — verify in engagement letter |
California-resident Big Bear buyers benefit significantly from a provider whose workflow explicitly handles the Schedule CA (540) addback math. Many traditional on-site engagements treat federal §168(k) acceleration as the full deliverable and leave the state-side reconciliation to the buyer's CPA. Cost Seg Smart's study output includes separate federal-and-California depreciation schedules where applicable, so the addback isn't surprise homework for your accountant.
Three questions to answer before contacting any provider:
Price ranges are based on publicly stated tiers and industry sources as of 2026. Turnaround times reflect typical engagement lengths and may vary. We do not receive compensation from any other provider listed; this is not affiliate content.
The "best for" framing reflects each provider's actual public sweet spot — not paid placement. We don't claim to be #1 for every customer profile. We're the best fit for the segment described in our row (fast, affordable, remote-first, residential + STR + small commercial under $5M). For larger commercial portfolios, engineer-led firms with on-site capacity are the right choice.
See the Big Bear engine benchmarks Start a Cost Seg Smart study