Accelerated Depreciation
Reclassify 20–30% of building value to 5–15 year schedules — front-loading deductions you're already entitled to.
Works Across Every Property Type
SFRs, Multifamily, STRs, and Commercial
Any property type. Any portfolio size. You likely qualify.
Tax Benefits Explained
How Cost Segregation Improves Cash Flow
Bonus Depreciation
Qualifying components get bonus depreciation, unlocking significant additional write-offs in year one.
Strong ROI From Day One
Most clients recover the study fee 5–30x in year-1 savings. PAD tracking captures more deductions every time you replace a component.
Example Savings
The Difference One Study Makes
Based on a $1M rental property, 20% land value, 37% tax rate, 100% bonus depreciation. Results vary.
Without cost segregation
$10,764
Year 1 tax savings
vs
With Cost Segregation
$96,335
Year 1 tax savings
+$85,571 more cash in Year 1
$260,000Year 1 deduction with cost seg
~30%of building value reclassified
27.5 → 5–15 yrsdepreciation schedule accelerated
Common reclassifications:
Carpet & Flooring5-yr
Appliances5-yr
Kitchen Cabinets5-yr
Landscaping15-yr
Driveway & Parking15-yr
Find out what your property qualifies for — free estimate in 60 seconds.
See My Property's SavingsChat with an Engineer
Engineer-Led Cost Segregation. Built to Hold Up in an Audit
Talk to the engineer who signs off on your study.
Engineer & CPA Partner
Matthew Gigantelli
Principal Cost Segregation Engineer, Modern CFO
Why Talk With Matthew?
- 5+ years specialized in cost segregation engineering
- Accelerated $1Bn+ in depreciation and immediate cash flow
- Completed 1,000+ studies across all property types
- Methodology aligned with IRS Audit Techniques Guide
- ASCSP (Member #M009-25)
ASCSP Member: Industry standard for cost segregation engineering.
Cost Segregation Benefits
See Your Estimated Tax Savings Before You Commit
Based on 10,000+ studies and $1B+ in accelerated depreciation. Most properties qualify.
Tax benefit verification
Data-backed estimates
IRS historical ranges
Overline Cost Seg AI● Live
Free · No commitment · Results in 60 seconds
How It Works
From Estimate to Tax Savings in 4 Simple Steps
2–4 weeks. We handle the rest.
1
Get Your Free Estimate
Enter your address above or schedule a call. Free estimate in 60 seconds.
2
Submit Property Details
Share closing docs and basic info. No appraisal needed.
3
Engineer Reviews Your Property
Our certified engineer analyzes your property using satellite imagery, construction data, and IRS methodology.
4
Receive Your Study & Save
Get your IRS-ready report. Share with your CPA and claim your accelerated depreciation.
Quality That Holds Up in an Audit
ASCSP-certified engineers. IRS-approved methodology. Audit support included.
We Work Directly With Your CPA
We coordinate with your CPA. Excel-ready schedules included.
No commitment. Free consultation.
The Overline Guarantee
Trusted Results, Built to Last
Audit-ready studies. Lifetime support.
01
Property Analysis
We identify all eligible tax benefits using construction data, satellite imagery, and 10,000+ study insights.
02
Engineer Review & Classification
Certified engineers classify each component using IRS methodology and case law.
03
Tax Benefit Confirmation
Verified estimates upfront. Know the impact before filing.
04
IRS Defense Assistance
Lifetime audit support. Documentation and expert guidance included.
Overline Guarantee
High-Quality Results: Certified engineers. IRS-compliant. Maximize tax efficiency.
Tax Benefits Identified: Every eligible component documented. Defensible methodology.
Audit-Ready Documentation: Engineering analysis, photos, IRS citations.
Lifetime IRS Defense: Audit support with expert guidance. Guaranteed.
Expert Engineering & Tax Methodology
ASCSP engineers. 10,000+ studies. IRS-defensible results.
FAQ
Your Questions, Answered
Everything you need to know about cost segregation before getting started
- What is cost segregation and why do real estate owners use it?
Cost segregation is a tax strategy that accelerates depreciation by reclassifying portions of a building into shorter-life assets (5-, 7-, and 15-year property). Investors use it to pull deductions forward, often generating significant year-one tax savings while total lifetime depreciation remains the same. See actual savings by property type from our 1,000+ study database.
- Does cost segregation increase audit risk?
No, when done correctly. Cost segregation has been explicitly recognized by the IRS for decades. Audit risk typically comes from weak documentation or non-engineered reports, not from the strategy itself.
- What makes a cost segregation study IRS-defensible?
An IRS-defensible study is based on engineering analysis, asset-level classification, documented assumptions, and support tied to tax law and case precedent. This is the standard we follow for every study we deliver. Read our cost segregation legal guide for the court cases and frameworks that support these classifications.
- Do you offer different levels or types of cost segregation studies?
No. We only provide fully engineered, IRS-ready cost segregation studies. We don't offer template, desktop-only, or non-engineered reports because they often introduce unnecessary risk for investors and CPAs.
- What types of properties are eligible for cost segregation?
Most income-producing properties placed in service after 1986 are eligible. This includes single-family rentals, short-term rentals (Airbnb/STR), multifamily properties, and many commercial buildings. The key requirement is that the property is used for business or investment purposes, not as a personal residence.
- How do I know if cost segregation is worth it for my property?
The fastest way is to use the free calculator at the top of this page. It gives you a quick estimate of potential depreciation and tax savings so you can decide whether a full engineered study makes sense. For a deeper analysis, read our decision framework based on 1,000+ studies.
- What does the cost segregation calculator show?
The calculator estimates how much of your property could be reclassified into shorter-life assets, how depreciation is accelerated, and the potential tax impact based on your assumptions. It's designed for planning and decision-making. Learn more about how the calculator works and the AI methodology behind it.
- How accurate is the calculator compared to a full study?
The calculator is directional — typically within 10–20% of final study results for standard properties. A full engineered study is more precise because it's based on actual purchase documents, renovation costs, and detailed engineering analysis. Most investors use the calculator first, then confirm with a study. See our full accuracy breakdown.
Find Out What You're Leaving on the Table
Average client saves $87,000 in year-1 deductions. Free estimate.
Preliminary estimate only. Final study performed by ASCSP-certified engineers. Not tax advice.