Can Real Estate Developers Use Cost Segregation and Bonus Depreciation?

Cost segregation studies and bonus depreciation are some of the most powerful tax strategies available to real estate investors. But if you’re a real estate developer, the rules work differently, and understanding those differences can save you from costly mistakes.

In this episode of the Tax Smart REI Podcast, Thomas Castelli and Nathan Sosa explain why many developers can’t immediately benefit from depreciation deductions, how dealer status impacts tax treatment, and when developers can eventually use cost segregation and bonus depreciation benefits.

The Big Difference: Build-to-Sell vs. Build-to-Hold

The most important factor determining whether a developer can benefit from depreciation is their intent for the property.

Developers generally fall into one of two categories:

Build-to-Sell

These developers construct properties with the intention of selling them shortly after completion.

From a tax perspective, these properties are typically treated as inventory, similar to products sitting on a retailer’s shelf. Because inventory is not depreciable property:

• Cost segregation studies generally provide no benefit.
• Bonus depreciation is unavailable.
• Gains are often taxed as ordinary income.
• Self-employment tax may apply.
• 1031 exchanges are generally not available.

This treatment often surprises developers who assume all real estate qualifies for the same tax advantages enjoyed by long-term investors.

Build-to-Hold

Developers who construct properties and then rent them out operate under a different set of rules.

Once the property is placed in service, meaning it’s rent-ready and available for tenants, it becomes depreciable property. At that point, developers may be able to:

• Perform a cost segregation study.
• Claim bonus depreciation.
• Generate depreciation deductions against qualifying income.
• Potentially use 1031 exchanges in the future.

The challenge is timing. While traditional investors may place a property in service shortly after purchase, developers often spend years constructing a project before depreciation benefits become available.

Why Developers Face a Timing Problem

One of the biggest frustrations for developers is the delay between spending money and receiving tax benefits.

A developer may invest significant capital into land acquisition, permitting, infrastructure, and construction over several years. However, depreciation doesn’t begin until the property is officially placed in service.

For example:

• Capital is invested in 2026.
• Construction continues through 2027.
• The property is completed and placed in service in 2028.
• Tax benefits are realized on the 2028 return, often filed in 2029.

That’s a much longer runway than most buy-and-hold investors experience.

Tax Deductions Developers Can Still Claim

Although developers often can’t deduct construction costs immediately, that doesn’t mean they have no tax planning opportunities.

Nathan and Thomas discuss several areas where developers may still generate deductions, including:

Indirect Costs

Developers under certain gross receipts thresholds may be able to deduct indirect expenses such as:

• Interest
• Insurance
• Certain carrying costs

These deductions can provide meaningful tax relief during the development phase.

Business Deductions

Since development operations are active businesses, developers may also deduct:

• Vehicles used in the business
• Equipment purchases
• Operational expenses
• Employee and contractor costs

These deductions can help offset taxable income while projects are under construction.

Qualified Business Income (QBI) Deduction

Developers may also qualify for the Section 199A Qualified Business Income deduction, which can reduce taxable income by up to 20% of eligible business profits.

The Entity Structure Trap

Another major issue developers face is choosing the wrong entity structure.

Many developers use S corporations to reduce self-employment taxes on active development income. While this can provide benefits, it can also create problems if a property eventually becomes a long-term rental.

If a property held in an S corporation is later converted into a hold-for-rent strategy, owners may lose flexibility because:

• Distributing property out of an S corporation can trigger taxable gains.
• 1031 exchange planning becomes more complicated.
• Refinancing and restructuring opportunities may be limited.

This is why planning before development begins is so important. Developers should determine whether a project is likely to be sold or held long before construction is complete.

How Developers Can Still Benefit from Cost Segregation

For developers pursuing a build-to-rent strategy, cost segregation studies can be extremely valuable.

Once the property is placed in service:

1. A cost segregation study identifies components eligible for shorter depreciation lives.
2. Bonus depreciation accelerates those deductions.
3. The developer receives a large upfront deduction instead of waiting decades to recover costs.

Nathan notes that many developers who hold rental properties eventually use cost segregation studies as part of a long-term wealth-building strategy, particularly when paired with future 1031 exchanges.

The Importance of Multi-Year Tax Planning

The biggest takeaway from this discussion is that developers need proactive tax planning.

Unlike traditional investors, developers face:

• Dealer status considerations
• Inventory rules
• Self-employment tax exposure
• Entity structure decisions
• Timing issues around depreciation
• Potential limitations on 1031 exchanges

Because these factors often interact over several years, tax planning shouldn’t focus solely on the current year. A multi-year strategy can help developers avoid costly mistakes and maximize available tax benefits.

Final Thoughts

Cost segregation and bonus depreciation remain powerful tax tools—but developers must understand when those benefits actually apply.

If you’re building properties to sell, depreciation benefits may be unavailable because the properties are treated as inventory. However, developers who build and hold rental properties can often unlock substantial tax savings once those assets are placed in service.

The key is understanding your long-term strategy before choosing entity structures, tax elections, and development plans. With proper planning, developers can position themselves to take advantage of the same wealth-building tax strategies that many successful real estate investors use today.