Commercial Real Estate Depreciation: How Does It Work

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April 14, 2025
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Commercial real estate (CRE) investment is an excellent way to diversify your portfolio while leveraging valuable tax benefits. While many investors are familiar with high-profile tax advantages like 1031 exchanges or the pass-through structure of limited liability companies (LLCs), fewer understand the impact of depreciation — a powerful tool for reducing taxable income and maximizing returns.

Commercial and residential buildings depreciate over a set period based on property type. Understanding how depreciation affects property value and investment returns is crucial for investors, especially those just starting in real estate. Mastering this concept can help you make informed decisions, optimize your tax strategy, and build long-term wealth.

What is Commercial Real Estate Depreciation?

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Depreciation is one of the most valuable tax benefits in CRE investing. It allows property owners to recover the investment cost over time by deducting a portion of the building’s value each year. This tax deduction accounts for the property's wear and tear, aging, and functional obsolescence, helping investors reduce taxable income and improve cash flow.

A key distinction in depreciation is that only buildings and their improvements are depreciable — land is not. The IRS considers land to have an indefinite lifespan since it does not wear out as structures.

For example, if you purchase a commercial property for $1 million, and the land is valued at $200,000, only the remaining $800,000 (the building and improvements) is depreciable. Your annual depreciation deduction under the 39-year schedule would be approximately $20,512 ($800,000 ÷ 39 years).

How the IRS Classifies Depreciation for Tax Purposes

The IRS treats depreciation as a noncash expense, meaning you don’t need to spend money each year to claim it — it’s simply an accounting deduction that reduces your taxable income. To qualify for depreciation, the IRS requires that:

  • The property must be owned by the investor (not leased).
  • The property must be used for income-generating purposes (e.g., rental property, office space).
  • The property must have a determinable useful life and lose value over time.

The IRS assigns a standard 39-year depreciation schedule for CRE, meaning you can deduct 1/39th of the building’s cost (excluding land) from your taxable income each year. On the other hand, residential rental properties are depreciated over 27.5 years.

Key Depreciation Methods & IRS Guidelines

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Depreciation is a powerful tax tool that allows CRE investors to reduce taxable income over time. The IRS provides multiple depreciation methods, each with benefits, depending on how an investor wants to structure their tax deductions.

Straight-Line Depreciation (SLD): The Standard Method

The most commonly used method for CRE is SLD. This method spreads the depreciation evenly over several years, ensuring a consistent annual deduction.

39-Year Depreciation Schedule for Commercial Properties

The IRS assigns a 39-year depreciation period for commercial properties, meaning the building’s cost is divided equally.

An investor purchases a commercial building for $1 million, excluding the land value:

  • The IRS allows only the building to be depreciated, not the land.
  • The investor must divide the $1 million building cost over 39 years.
  • Annual depreciation deduction = $1 million ÷ 39 = $25,641 per year.

This means the investor can reduce their taxable income by $25,641 annually for the next 39 years, increasing cash flow and overall investment profitability.

Accelerated Depreciation & Bonus Depreciation

While SLD provides steady deductions, investors looking to accelerate tax benefits can use faster depreciation methods under the modified accelerated cost recovery system (MACRS).

MACRS allows property owners to depreciate certain assets faster than the standard 39 years by breaking them into different categories:

  • Five-year property (e.g., appliances, carpet, furniture)
  • Seven-year property (e.g., office equipment, fixtures)
  • 15-Year Property (e.g., land improvements like sidewalks, fences)

The IRS allows investors to take a large percentage of depreciation upfront through bonus depreciation rather than spreading it over time:

  • As of recent tax laws, investors can deduct 80% of qualifying assets in the first year (phasing out over time).
  • Bonus depreciation applies to shorter-life assets, such as five, seven, or 15 years, rather than the entire building structure.
  • Example: If an investor installs $100,000 worth of office fixtures (classified as seven-year property), they can deduct $80,000 immediately in the first year rather than spreading it over seven years.

This is a game-changer for cash flow, as investors can reduce taxable income significantly in the early years of ownership.

Section 179 Deduction: Special Write-Offs

Section 179 is another method that allows investors to deduct the cost of qualifying improvements entirely in the same year instead of depreciating them over time:

  • Applies to specific property improvements like heating, ventilation, and air conditioning (HVAC); roofing; security; and fire protection.
  • Unlike bonus depreciation, Section 179 has a deduction limit (varies by year).
  • Ideal for investors who want immediate tax savings on property upgrades.

For example, if an investor spends $50,000 on a new HVAC system, they may be able to write off the entire $50,000 in the year of purchase rather than depreciating it over several years.

Which Depreciation Method Is Best?

  • For long-term consistency → SLD (best for steady deductions).
  • For maximizing tax savings upfront → Bonus depreciation and MACRS (best for accelerating deductions).
  • For immediate full deductions → Section 179 (best for qualifying improvements).

Understanding these depreciation methods allows investors to strategically minimize taxes and improve cash flow, making CRE an even more powerful investment vehicle.

Cost Segregation: A Tax Strategy for Faster Depreciation

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Depreciation is a powerful tax benefit for CRE investors, but what if you could accelerate your deductions and maximize tax savings earlier?

What Is a Cost Segregation Study?

A cost segregation study is an IRS-approved method that allows property owners to reclassify specific building components into shorter depreciation categories rather than the standard 39-year schedule for CRE.

By breaking down a property’s components, investors can accelerate depreciation deductions, leading to significant tax savings upfront instead of waiting decades to recoup costs.

How Cost Segregation Works: Breaking Down Depreciation Categories

Instead of depreciating an entire building over 39 years, a cost segregation study identifies parts of the property that qualify for shorter depreciation periods:

  • The five-year property includes furniture, carpets, decorative lighting, and technology systems.
  • The seven-year property includes office equipment, security systems, and fixtures.
  • The 15-year property includes land improvements such as sidewalks, parking lots, fences, and landscaping.

By classifying assets into faster depreciation categories, investors can deduct more significant amounts sooner, reducing taxable income and improving cash flow.

Example: How an Investor Saves Money With Cost Segregation

Suppose an investor purchases a $5 million commercial building. Without cost segregation, they would follow SLD:

Standard Depreciation (39 Years)

  • $5 million ÷ 39 years = $128,205 per year in tax deductions

If a cost segregation study determines that $1.5 million of the property consists of five-, seven-, and 15-year assets, those components can be depreciated much faster.

Accelerated Depreciation With Cost Segregation

  • Spending $1.5 million of short-life assets depreciated in five to 15 years results in significantly higher early-year deductions.
  • This could lead to more than $500,000 in first-year tax savings.

Instead of waiting nearly four decades to recoup deductions, the investor saves money immediately, freeing up capital for reinvestment.

A cost segregation study is ideal for CRE investors who:

  • Own high-value commercial properties, typically over $1 million.
  • Want to accelerate tax deductions and increase cash flow?
  • Plan to hold the property fully for several years to benefit from tax savings.
  • Recently purchased, constructed, or renovated a building.

Even if an investor has owned a property for a few years, they may still benefit from a study. The IRS allows for retroactive cost segregation to claim missed deductions.

How To Maximize Your Depreciation Benefits

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Depreciation is more than just a tax deduction — it’s a strategic tool that can significantly enhance cash flow and investment returns. Investors can ensure they maximize every available tax advantage by taking a proactive approach. Here’s how to structure depreciation strategies for optimal financial efficiency.

Work With Experts Who Understand Commercial Real Estate Tax Strategies

Navigating IRS depreciation rules requires specialized knowledge, and many investors miss out on substantial tax savings simply because they don’t use the right strategies.

With expert guidance, investors can:

  • Structure purchases to maximize depreciation benefits from the start.
  • Identify opportunities for cost segregation to accelerate tax savings.
  • Ensure full compliance with IRS regulations, avoiding missed deductions or costly mistakes.
  • Develop a long-term tax strategy that aligns with investment goals.

Proper planning ensures that every deduction is optimized, allowing investors to reduce their taxable income and reinvest their savings in future opportunities.

Time Property Purchases and Renovations for Maximum Deductions

The timing of property acquisitions and upgrades can impact tax savings significantly. A well-structured approach ensures investors:

  • Close on properties before year-end to take advantage of first-year depreciation deductions.
  • Plan renovations strategically so improvements qualify for bonus depreciation or Section 179 deductions.
  • Leverage current tax laws, taking advantage of temporary benefits before they expire.

By carefully timing major financial decisions, investors can take more significant deductions earlier, improving short-term cash flow while ensuring long-term tax efficiency.

Combine Depreciation With Other Smart Tax Strategies

Depreciation works best when integrated with other high-impact tax strategies that reduce liability and enhance returns. Key approaches include:

  • 1031 exchanges, allowing investors to defer capital gains taxes by reinvesting into new properties.
  • Cost segregation studies, accelerating depreciation on qualifying assets for larger immediate tax savings.
  • Passive loss strategies, offsetting rental income with depreciation deductions.
  • Opportunity Zone investments, combining depreciation with additional tax incentives.

By incorporating multiple tax strategies, investors can optimize cash flow, lower tax burdens, and scale portfolios more effectively.

Maximize Your Returns With Smart Depreciation Strategies

CRE isn’t just about location — it’s about leveraging every financial advantage available. Depreciation is one of investors' most powerful tools to reduce taxable income, improve cash flow, and accelerate wealth-building.

I specialize in high-performing assets like medical office buildings, retail, multifamily, veterinary, and industrial properties that generate strong returns while offering significant tax advantages. With decades of experience, I’ve mastered the strategies that allow investors to maximize tax benefits while ensuring long-term profitability. Whether it’s optimizing depreciation, leveraging cost segregation, or structuring deals for the best financial outcome, I know how to make real estate work in your favor.

Get the most out of your investments — let’s connect and craft a tax strategy that works for you.

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