The RentalWriteOff Blog
Practical guides on cost segregation, depreciation, and tax strategy for rental property owners. Written for landlords who want to keep more of what they earn.
DIY Cost Segregation: The Honest Guide for Rental Property Owners
Yes, you can legally do cost segregation yourself. Here's what a DIY study actually involves step by step, what the IRS expects to see, and why an engineering-based study is now less work than DIY, with audit protection included.
Read the guideHow RentalWriteOff Works: An Engineering-Based Approach to Cost Segregation for Rental Properties
RentalWriteOff delivers IRS-compliant cost segregation studies for residential rental properties in 48 hours. Here's exactly how our engineering-based approach works and what makes our reports audit-ready.
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Residential Cost Segregation Benchmarks: Data From Every Study We Have Delivered
Real numbers from every study we have delivered: the median study reclassified 26.1% of depreciable basis, and smaller properties reclassified a larger share than expensive ones.
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What Is Cost Segregation? A Rental Property Owner's Guide
Cost segregation is an IRS-recognized tax strategy that reclassifies parts of your rental into shorter depreciation schedules, cutting your tax bill in the early years of ownership.
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Rental Property Depreciation: The Complete Landlord's Guide
Depreciation is the single biggest tax benefit of owning rental property. A complete guide covering standard schedules, bonus depreciation, and how cost segregation fits in.
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7 Cost Segregation Myths That Are Costing Rental Investors Money
Most owners skip cost segregation based on myths they've absorbed second-hand. Here are the seven most common misconceptions and the reality behind each.
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Does a Cost Segregation Study Require a Site Visit? (No, Here's Why)
We don't do site visits. Every study is built remotely using photos, public records, and satellite imagery. Here's why that works for residential rentals, and why it's actually better than a traditional on-site study.
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Bonus Depreciation on Rental Property: Catching Up With an Amended Return or Form 3115
Missed bonus depreciation on a rental you own? The Jan 19, 2025 acquisition date sets your rate. How to catch up with an amended return or Form 3115.
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100% Bonus Depreciation Is Back for 2026: What It Means for Rental Owners
100% bonus depreciation is back for qualifying property acquired after January 19, 2025. Here's what that means for rental owners planning a cost segregation study in 2026.
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Bonus Depreciation and Cost Segregation for Residential Rentals in 2026
A 2026 guide to how cost segregation amplifies bonus depreciation on residential rental properties, the new 100% bonus rules, and what rental owners should do before year-end.
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Cost Segregation + Bonus Depreciation: How They Work Together
Cost segregation and bonus depreciation are the one-two punch behind most rental property tax strategies. Here's how they stack, why placed-in-service date matters, and what changed for 2026.
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ADU Cost Segregation: The Tax Play Hiding in Your Backyard
Rented ADUs are unusually strong cost segregation candidates: near-zero land allocation, real construction invoices, and large first-year deductions.
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Cost Segregation for Short-Term Rentals: The Airbnb Tax Strategy Explained
Short-term rentals are one of the strongest cost segregation candidates in real estate. Why Airbnb and VRBO hosts stand to save the most, and how the STR tax loophole works.
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Is Cost Segregation Worth It for a Single-Family Rental?
A worked ROI example for single-family rental investors: when cost segregation is worth it, what the math looks like at different property values, and when to think twice.
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Cost Segregation for Mobile Home Parks and Manufactured Housing
Mobile home parks and manufactured housing communities are dense with short-life assets: utility infrastructure, roads, pads, and site improvements. Why MHP owners see the biggest impact.
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Cost Segregation and Depreciation Recapture: Does It Hurt You When You Sell?
The objection every forum raises: won't you just pay the deduction back as recapture when you sell? Here's the actual math on Section 1245 and 1250, plus three ways recapture shrinks or disappears.
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Look-Back Cost Segregation: Claim Missed Depreciation with Form 3115
Bought your rental years ago and never did a cost segregation study? You can still catch up on every year of missed depreciation in a single tax return using Form 3115.
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When to Order a Cost Segregation Study (And What You Lose by Waiting)
The best time to do a cost segregation study is the year you buy the property. But if you didn't, a look-back study can still recover missed depreciation. Here's how to think about timing.
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Rental Property Repairs vs. Improvements: The Landlord's Tax Guide
The difference between a repair and an improvement can change your tax bill by thousands. Here's how the IRS draws the line, with real examples landlords run into every year.
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How Much Does a Cost Segregation Study Cost in 2026? (Real Numbers)
Real 2026 pricing: DIY tools from $99, engineering-based studies from $799, traditional firms $5K+. What each tier delivers, and the ROI math that matters more than the sticker.
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What Makes a Cost Segregation Report Audit-Ready
If the IRS audits your return, your cost segregation report has to stand up on its own. Here's what separates an audit-ready report from one that falls apart under scrutiny.
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How to Compare Cost Segregation Providers: What Actually Matters
Not all cost segregation providers produce the same quality report. A practical framework for comparing providers on methodology, documentation, audit support, and turnaround.
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How to Evaluate a Cost Segregation Report: Quality Signals and Red Flags
Before you file a cost segregation study on your return, make sure the report actually holds up. Green flags to look for and red flags that should make you walk away.
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Understanding 5-, 7-, and 15-Year Property in a Cost Segregation Study
The whole point of cost segregation is reclassifying property into shorter recovery periods. What counts as 5-, 7-, and 15-year property on a residential rental, with real examples.
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DIY vs. Engineering-Based Cost Segregation: Which Is Right for You?
DIY cost segregation tools are cheap, engineering-based studies are more defensible. A side-by-side comparison of methodology, risk, audit readiness, and when each makes sense.
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How RentalWriteOff Creates an IRS-Compliant Cost Segregation Report
A look inside our process for creating an audit-ready cost segregation study in 2 business days: data collection, engineering-based analysis, classification, and final quality review.
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Case Study: $46,000 of First-Year Deductions on a $400K Rental
A worked example: how a cost segregation study turned a $400,000 single-family rental into roughly $46,000 of first-year deductions and about $14,800 of tax savings.
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