Rapid Report vs Fully Engineered Study: Which Do You Actually Need?
The $795 Rapid Report fits residential properties under $800K depreciable basis where the audit-defense profile is conservative. The $2,495 Fully Engineered Residential tier produces 5 to 10 percentage points higher reclassification on properties above that band and is materially more defensible for STR loophole or REPS-amplified positions. The savings differential typically exceeds the fee differential by a factor of 5 to 10 on properties above $1M basis.
Methodology difference (Pub 5653 Chapter 3)
The Rapid Report uses software-assisted intake plus engineer review. The Fully Engineered tier uses the detailed engineering approach from actual cost records described in Chapter 3 of IRS Publication 5653, including site inspection (virtual for residential, in-person for commercial) and blueprint review where available.
Both tiers address the 13 Principal Elements of a Quality Cost Segregation Study under Pub 5653 Chapter 4. Both produce engineer-signed reports. Both include five years of audit defense. The difference is depth of property-specific allocation, which produces materially different reclassification percentages on properties with non-standard components.
| Element | Rapid Report | Fully Engineered Residential |
|---|---|---|
| Starting price | $795 | $2,495 |
| Basis range | Under $800K | Up to $2M |
| Turnaround | 5 to 10 business days | 2 to 3 weeks |
| Site inspection | Virtual walkthrough or none | Virtual or in-person |
| Blueprint review | If provided | Always when available |
| Typical reclassification | 18% to 22% | 25% to 30% |
| Form 3115 prep | Available at extra cost | Included for look-back |
| Audit defense | 5 years included | 5 years included |
Worked example: $750K residential rental
On a $750K residential rental with $600K depreciable basis, the Rapid Report typically reclassifies 20% ($120K) to 5-year personal property and 7% ($42K) to 15-year land improvements. Fully Engineered typically reclassifies 25% ($150K) to 5-year and 10% ($60K) to 15-year.
First-year deduction under 100% bonus: Rapid $162K, Fully Engineered $210K. Differential: $48K. At a 32% combined federal and state marginal rate, that is $15K of additional first-year tax savings under Fully Engineered. Fee differential: $1,700. Net advantage of Fully Engineered: about $13K on this property.
When the Rapid Report is the right call
Rapid Report fits when depreciable basis is under $800K, the property is conservative (long-term rental with standard components), the audit position is moderate (no STR loophole claim, no REPS amplification, no aggressive look-back), and the owner can capture the loss in the year of acquisition.
On a $400K single-family rental with passive income to absorb the loss, the Rapid Report produces excellent ROI: roughly $75K of first-year deduction at $24K of tax savings, against a $795 fee. Net 30-to-1 ROI on the engineering work.
When Fully Engineered is materially better
Fully Engineered is materially better above $800K basis, on STR properties claiming the loophole, on REPS-amplified positions, on commercial property of any size, on properties with non-standard components (medical equipment, restaurant fixtures, specialty lighting), and on look-back studies where the Section 481(a) catch-up is substantial.
The reclassification differential of 5 to 10 percentage points compounds with basis. On a $2M property at 28% versus 20% reclassification: the Fully Engineered tier produces $160K of additional first-year deduction, or $51K of additional tax savings at 32% marginal. Net advantage: $49K above the fee differential.
Frequently asked questions
- How does WeCostSeg coordinate with my CPA?
- Every engagement follows the three-touch CPA Coordination Protocol. We send a preliminary analysis to your CPA on intake, share the draft report five business days before final delivery, and coordinate Form 3115 filing timing when a Section 481(a) adjustment applies. Your CPA never pays a fee.
- Does this analysis assume 100% bonus depreciation under OBBBA?
- Yes for property acquired with a binding contract on or after January 20, 2025 under Public Law 119-21. Property under a binding contract on or before January 19, 2025 stays on the legacy phase-down: 40% bonus in 2025, 20% in 2026, 0% in 2027 and after.
- Is the five-year audit defense included?
- Yes. Every WeCostSeg engagement includes five years of written audit defense at no extra cost. The defense aligns to the 13 Principal Elements of a Quality Cost Segregation Study under IRS Publication 5653 Chapter 4.
- Can I get a free preliminary analysis?
- Yes. Submit your property details via the free proposal form or WhatsApp. Our engineer returns a written estimate of your first-year deduction within four business hours during US Eastern hours. No payment, no contract.
- Can I upgrade from Rapid Report to Fully Engineered later?
- Yes via Form 3115 with DCN 7. The methodology change is filed with the next year's return and the Section 481(a) catch-up captures the additional benefit. Doing the right tier the first time is cleaner than amending later.
Zawwad Ul Sami, Founder
Zawwad Ul Sami is the founder of WeCostSeg, a founder-led cost segregation firm serving real estate investors across the US. He focuses on strategy, pricing, and the firm's overall direction.