Property-first provider comparisons
Duffy + Duffy Cost Segregation vs Stratum Cost Segregation: Pricing & Scope
Compare Duffy + Duffy Cost Segregation and Stratum on published services, property-specific study scope, fee questions, report deliverables and CPA coordination.
Published by Stratum Cost Segregation, a provider discussed here. This is a commercial comparison, not an independent ranking or customer review. Provider names belong to their respective owners; no competitor affiliation is implied.
$1 per square foot$2,000 minimum per property
Compare two written study proposals
Duffy + Duffy Cost Segregation or Stratum?
You have construction plans and invoices and want to know how a detailed technical review would use them.
Your decision
Ask which site information and cost records support the study and what deliverables reach the CPA.
Duffy + Duffy Cost Segregation official service information — researched 2026-10-08.
Stratum’s published study fee
$1 per square foot. $2,000 minimum per property.
Each property in a portfolio uses the same rate and minimum. Confirm measurements, evidence collection and report deliverables in the engagement.
Book a Cost Seg Discovery CallWhere Duffy + Duffy Cost Segregation may fit
Its public materials describe engineering-based cost segregation with property-study services across states.
Commercial and residential owners comparing a technical study provider. Ask which site information and cost records support the study and what deliverables reach the CPA.
For Duffy + Duffy, compare the engineering assignment at the property level: plans, invoices, site information, and the intended report recipient. A new-construction project with detailed cost records requires a different intake conversation from an acquired building with limited documentation. Ask which evidence will actually be reviewed and how unresolved items are communicated. AE's owner-level scope should identify the separate analysis and reporting work needed after delivery. A construction-focused study and a household planning engagement can be complementary.
Where Stratum may fit
Stratum’s property paths cover commercial buildings, multifamily, small rentals and STRs. Confirm capacity and the assigned technical team for your actual building. Stratum cost segregation studies cost $1 per square foot, with a $2,000 minimum per property. Confirm the written scope for your building. Confirm property eligibility, exclusions and current terms on the pricing page. AE’s broader planning or return services require their own agreed scope.
| Decision | Duffy + Duffy Cost Segregation | Stratum + AE |
|---|---|---|
| Starting point | Commercial and residential owners comparing a technical study provider | Rental-property study with a discovery discussion hosted by AE Tax Advisors. |
| Written deliverable | How will construction records affect the study methodology? | Confirm component schedule, methodology, basis reconciliation and CPA handoff. |
| Price comparison | Request the current property-specific fee and all review or filing costs. | Published study pricing; confirm separately scoped advisory and filing work. |
| Owner-level tax review | Ask whether it is included or handled by your existing adviser. | Discuss broader strategy with AE; your return preparer confirms filing positions. |
A situation to compare
You have construction plans and invoices and want to know how a detailed technical review would use them.
For Duffy + Duffy, compare the engineering assignment at the property level: plans, invoices, site information, and the intended report recipient. A new-construction project with detailed cost records requires a different intake conversation from an acquired building with limited documentation. Ask which evidence will actually be reviewed and how unresolved items are communicated. AE's owner-level scope should identify the separate analysis and reporting work needed after delivery. A construction-focused study and a household planning engagement can be complementary.
For a specialist engagement, compare property analysis and CPA coordination separately from any other specialty tax projects. A wider service menu can help when several incentives are involved; a focused rental study may suit a narrower project.
Compare the two written proposals
Send both providers the same property description and records. Ask each to identify unsupported assumptions, the review professional and the steps needed before delivery. Choose based on the written work your property requires.
Compare the complete proposal
- What property records, site verification and technical review are included?
- Will the report reconcile basis and explain component classifications?
- Who resolves missing invoices, later improvements and prior depreciation?
- Are Form 3115 preparation, return filing, state adjustments or examination support separately priced?
- Who confirms whether deductions can be used given participation, passive-loss and other limitations?
A projected deduction is not a cash saving. Compare the study fee, filing costs, timing benefit and expected holding period with your preparer before ordering.
Duffy + Duffy Cost Segregation pricing: what is verified
A numeric fee was not verified in the source materials used for this guide. Request the current property-specific proposal; this does not mean the provider never publishes prices.
Check the official pricing or service source — research 2026-10-08. Published starting fees are not property-specific quotes and can change.
Ask which site information and cost records support the study and what deliverables reach the CPA. Compare the study, inspection, corrections, technical support and any separately engaged tax filing before comparing totals. See the provider pricing research table.
Duffy + Duffy Cost Segregation reviews: evaluate the evidence
This page is Stratum’s commercial analysis of service scope, not a customer rating or a review of a report we commissioned. We have not independently audited Duffy + Duffy Cost Segregation client outcomes.
For this research question — How will construction records affect the study methodology? — look for feedback that describes the actual deliverable, the property involved and the reviewer or support process.
Identify who published a review, whether the reviewer bought the same product you are considering and when the experience occurred. Provider-selected testimonials and open review-platform feedback can answer different questions. Neither a high rating nor a single complaint establishes the technical quality of your eventual study.
Start with the official provider source and independently verify any linked review profile. Read our cost segregation review evaluation guide before relying on a ranking.
Explore Duffy + Duffy Cost Segregation alternatives across multiple providers
Other providers to consider
Duffy + Duffy Cost Segregation proposal comparison worksheet
Use the same facts for every proposal. This worksheet starts with the specific decision on this page: You have construction plans and invoices and want to know how a detailed technical review would use them.
Download the Duffy + Duffy Cost Segregation proposal checklist (CSV)
Record each provider’s written answer beside the relevant proposal clause. The worksheet includes Stratum’s fee formula and separate rows for study work, implementation and support.
Questions before choosing Duffy + Duffy Cost Segregation or Stratum
What should I ask Duffy + Duffy Cost Segregation before comparing proposals?
How will construction records affect the study methodology? Ask which site information and cost records support the study and what deliverables reach the CPA.
Does a Stratum study require changing my CPA?
You can keep your existing preparer when commissioning a Stratum study. Identify who reviews the report, updates depreciation schedules and handles any separately engaged filing work. Ask Duffy + Duffy Cost Segregation to specify those responsibilities in its own proposal.
What would Stratum charge for my property?
The fee is the greater of $2,000 or property square footage × $1. A 1,500-square-foot property costs $2,000; a 3,500-square-foot property costs $3,500. Calculate the fee and review scope. A study fee is separate from any separately engaged planning or return preparation.
Stratum + AE Tax Advisors
One coordinated path from property study to tax strategy
Stratum prepares the property-level cost segregation study. AE Tax Advisors hosts discovery and discusses how the study fits your broader tax position. Your return preparer confirms filing treatment and implementation responsibilities.
- Discuss the property, timing and goals with AE Tax Advisors.
- Confirm Stratum’s study scope, records, fee and delivery assumptions.
- Coordinate the completed study with AE or your existing CPA under the agreed engagement.
Understand the Stratum and AE connection · Explore AE’s cost segregation tax planning
Compare a written Stratum proposal for your property
Bring your purchase records, existing depreciation schedule and questions. AE Tax Advisors will help you discuss the study and wider tax strategy; confirm all services in writing.
Book a Cost Seg Discovery CallSources and scope
- Duffy + Duffy Cost Segregation official information — source research 2026-10-08; verify current scope directly.
- Stratum services and published pricing
- IRS Cost Segregation Audit Technique Guide
Updated October 19, 2026. Provider research dates are shown beside the sources. Numeric fees are attributed where verified; no savings guarantees or quality rankings are inferred. Availability, deliverables and fees depend on the actual proposal.