Resources

• Glossary

  Plain-English definitions for every cost seg and depreciation term you will encounter.

• IRS Pub 5653 Plain-English Summary

  What examiners look for in a quality cost segregation study. All 13 Principal Elements.

• Cost-Seg-Friendly CPA Directory

  Curated directory of CPAs who handle real estate clients and cost seg engagements.

• 100-Question Master FAQ

  Every common question about cost seg, OBBBA, REPS, the STR loophole, and recapture.

Frequently asked questions

What is IRS Publication 5653?

IRS Publication 5653, updated February 2025, is the Cost Segregation Audit Techniques Guide. It defines the 13 Principal Elements of a quality cost segregation study, describes the six approved methodologies in Chapter 3, and explains how examiners evaluate reclassifications under Section 1245 vs 1250. Our plain-English summary walks each element and links to the underlying regulation.

How do I find a cost-seg-friendly CPA?

The CPA directory lists 200+ CPAs across the US who handle real estate clients, file Form 3115 for look-back studies, and understand OBBBA bonus depreciation mechanics. Each entry names the CPA, firm, states served, and specialty (STR loophole, REPS, syndications). WeCostSeg does not receive referral fees. The directory is free to search.

What terms should I know before reading cost segregation articles?

The glossary defines every core term: bonus depreciation (Section 168(k)), qualified improvement property, Section 1245 vs 1250 recapture, REPS under Section 469(c)(7), the STR loophole under Reg. 1.469-1T(e)(3)(ii), Form 3115 designated change number 7, and the Section 481(a) adjustment. 80+ entries cover every term used across the site.

Are the resources on this hub free to use?

Yes. The glossary, IRS Pub 5653 summary, CPA directory, and 100-question master FAQ are free to browse without registration. The calculators at /calculators/ run in-browser with no login. Downloadable resources like the Form 3115 checklist and property tax abatement worksheet download as PDF at no cost.

What is in the 100-question master FAQ?

The master FAQ at /faq/ covers 100 questions across cost segregation basics, OBBBA implementation, the STR loophole, REPS qualification, Form 3115 filing, recapture computation, state conformity, audit defense, pricing, and post-sale planning. Each answer cites the Code section or regulation. It is the single-page reference to send to a CPA or partner unfamiliar with cost seg.

How is the CPA directory kept current?

CPA directory entries are re-verified quarterly. Each firm confirms it still accepts new real estate clients, still files Form 3115 for cost seg look-back, and has not changed states served. Entries removed from the directory are marked with a retirement date. New CPAs are added by application at /resources/cpa-directory/apply/.