Studies and Fees
How to Vet a Cost Segregation Provider
A practical approach to evaluating cost segregation providers on qualifications, method, samples, support, and independence, without relying on marketing claims.
Part of the Studies, Fees, and Provider Quality hub. See also the FAQ and the glossary.
Choosing a provider is often more important than the fee. A capable provider produces a study that helps your preparer and holds up to questions. A weak provider can leave you with a document that does more harm than good. Here is a way to evaluate candidates.
Start with what they do
Ask the provider to describe their process in their own words. A capable provider can explain, without jargon, how they gather information, how they classify components, how they determine costs, and what your return will rely on. Compare their answers with What an Engineering-Based Study Typically Includes.
Qualifications
Ask who will do the work. Relevant backgrounds include engineering, architecture, construction cost estimation, and tax. Ask whether a licensed professional reviews the work. Titles matter less than what the people actually do on your project. Avoid relying on a company's general reputation and instead ask about the individuals assigned.
Experience with similar properties
Ask whether the provider has worked on properties like yours. Short-term rentals, multifamily buildings, and commercial buildings have different features. Experience with your type reduces the chance of missed items or inappropriate classifications.
Ask for a sample
Request a redacted sample report and read it with the checklist in What a Cost Segregation Report Should Contain. If the provider will not share a sample, ask why.
Ask about support
Find out what happens if the IRS asks about the study. Ask whether the provider will respond to questions and whether that is included. See Audit Defense and Documentation for Cost Segregation.
Independence and fee structure
Ask how the provider is paid. Fees tied to the size of the deduction can create incentives that conflict with objective analysis. This does not make such providers unreliable by itself, but you should ask how they manage the conflict. See Cost Segregation Study Fees: General Ranges.
References and reviews
Ask for references from other professionals, such as CPAs, rather than only from clients. Your preparer may know providers with a track record. Treat online reviews cautiously, since they can be unrepresentative.
Consistency with your preparer
Ask your tax preparer whether they have worked with the provider and whether they will accept the deliverable. A study your preparer will not sign is of little value. See Questions to Ask Your CPA Before Ordering a Study.
Communication and transparency
Watch how the provider responds to detailed questions. Clear, patient answers are a good sign. Vague answers, pressure to sign quickly, or reluctance to put terms in writing are warning signs. See Red Flags in Cost Segregation Study Proposals.
Scoring template
| Criterion | Weight | Provider score |
|---|---|---|
| --- | --- | --- |
| Method and site visit | High | |
| Qualifications | High | |
| Sample report quality | High | |
| Support terms | Medium | |
| Experience with my property type | Medium | |
| Fee and terms | Medium |
Give your own weights. If you cannot score a row, that is a gap to close.
After you choose
Get the scope in writing, including deliverables, timeline, and fee. Provide documents promptly. See How Long a Study Takes and What You Provide. Then review the draft with your preparer before the return is finalized.
Conversation prompts that reveal a lot
Ask, "Tell me about a property similar to mine and what was hardest about it." A provider with real experience will describe a concrete issue. Ask, "What would make you decline this engagement?" A careful provider will describe conditions such as poor records or a property that is too small. Ask, "What do you need from me to do this well?" A thoughtful answer lists specific documents. Ask, "What happens if my preparer disagrees with a classification?" The answer shows how collaborative the provider is.
Signals of good practice
Signals include a written scope, a clear timeline, willingness to share a sample, a named lead with stated qualifications, transparency about limits, and openness to working with your preparer. Signals of concern include pressure, evasiveness, and guarantees.
Keep the decision proportional
You do not need a months-long search for a modest engagement. For a small property, two or three quotes and a look at a sample may suffice. For a large property, a more thorough process is worth the time. Scale your diligence to the stakes.
Comparing the provider's advice to your preparer's
If your provider and your preparer disagree about a classification, do not simply pick the more favorable view. Ask each to explain the basis, including any guidance or decisions they rely on. The party who signs the return carries responsibility, so their comfort matters. A provider who is willing to revise a classification after a reasoned discussion is showing the kind of independence you want.
Length of relationship
Consider whether you will need this provider again for renovations or new acquisitions. A provider who keeps your files, updates schedules when you replace components, and remains reachable adds value beyond a single report. Ask about record retention and update pricing before you sign.
A word about AE Tax Advisors
AE Tax Advisors is the publisher of this guide and also offers services in this area. The guide is written to help you evaluate any provider, including us, using the same questions. A discovery conversation is a way to ask those questions.