Cost Segregation & 100% Bonus Depreciation: A Fort Lauderdale Real Estate Investor’s Guide

Insights from Josh & Karla Ziegelbaum – Ziegelbaum Group at Compass

Most investors underwrite a Fort Lauderdale property on four numbers: price, rent, expenses, and resale. The fifth number — after-tax return — is where cost segregation and 100% bonus depreciation quietly change the entire deal.

Key Takeaways

• 100% bonus depreciation is permanent again. Under the One Big Beautiful Bill Act, qualifying property acquired and placed in service after January 19, 2025 can generally qualify for a 100% first-year deduction. The IRS issued interim guidance confirming how it applies in Notice 2026-11.
• A cost segregation study does not deduct your purchase price. Land is never depreciable, and the main structure of a residential rental generally stays on a 27.5-year schedule.
• What it does do is reclassify qualifying components — appliances, carpeting, certain finishes, fencing, landscaping, site improvements — into 5-, 7- and 15-year property that may qualify for bonus depreciation.
• Land allocation is the single biggest variable in Fort Lauderdale. Two homes at the same price can produce completely different results if one price is mostly structure and the other is mostly waterfront land.
• Generating a deduction and using a deduction are two different questions. Passive activity rules, at-risk rules and basis limits all apply.

In this guide:

• What a cost segregation study actually does
• Why 100% bonus depreciation matters again
• Worked examples: $500K to $5M
• Why land allocation decides the outcome on the water
• Neighborhood by neighborhood
• Can it offset your other income?
• What “placed in service” means
• What happens when you sell
• When to consider a study
• Frequently asked questions

What a Cost Segregation Study Actually Does

A cost segregation study separates the components of an investment property into different depreciation categories.

Without one, a residential rental building is generally depreciated over 27.5 years. Commercial real estate is generally depreciated over 39 years. An engineering-based study identifies assets inside that same building with substantially shorter recovery periods.

Components that may qualify include:

• Appliances and certain furniture
• Carpeting and certain flooring
• Certain electrical components associated with equipment
• Decorative or removable finishes
• Certain cabinetry and millwork, depending on use and installation
• Fencing
• Landscaping
• Sidewalks and certain exterior improvements
• Other qualifying personal-property and land-improvement components

IRS guidance identifies items such as residential rental appliances, carpeting and furniture as 5-year property, while certain roads, fences, shrubbery and other land improvements can fall into 15-year property.

Because qualifying MACRS property with a recovery period of 20 years or less may be eligible for bonus depreciation, properly identified shorter-life components can potentially receive a 100% first-year deduction under current rules.

That is the mechanism. Everything else is execution.

Why 100% Bonus Depreciation Matters Again

Bonus depreciation had been scheduled to phase down to 40% in 2025 and disappear entirely by 2027. That changed with the One Big Beautiful Bill Act, signed July 4, 2025, which permanently restored the 100% first-year deduction for qualifying property acquired and placed in service after January 19, 2025. Treasury and the IRS followed with Notice 2026-11 in January 2026, confirming that the existing regulatory framework applies with January 19, 2025 substituted as the acquisition cutoff.

There is an important distinction that gets lost in most online explanations:

Buying a $1 million rental property does not mean you can deduct $1 million immediately.

Land is not depreciable. The main structural portion of a residential rental generally remains 27.5-year property. The purpose of a study is to determine how much of the property’s depreciable basis can legitimately be separated into shorter-lived qualifying assets.

This is also the year Florida investors are re-running their whole tax model, because the depreciation change landed alongside state-level changes we covered in our breakdown of Florida property tax reform and what it means for Fort Lauderdale homeowners.

What Could This Look Like on a Fort Lauderdale Investment Property?

The following examples are intentionally simplified. For illustration only, assume 20% of the purchase price is land value and 25% of the remaining building basis is identified through cost segregation as qualifying shorter-life property eligible for 100% bonus depreciation.

Actual results can be materially higher or lower. A qualified cost segregation professional and tax advisor should determine the actual allocations for any specific property.

$500,000 Investment Property

Assume an investor purchases a rental home in Imperial Point for $500,000.

• Illustrative land allocation: $100,000
• Depreciable building basis: $400,000
• 25% identified as qualifying shorter-life property: $100,000
• Potential immediate bonus depreciation: $100,000

At an illustrative 37% federal marginal rate, a fully usable $100,000 deduction could represent roughly $37,000 of potential federal tax savings — in addition to ordinary depreciation on the remaining building basis.

$1 Million Investment Property

• Illustrative land allocation: $200,000
• Depreciable building basis: $800,000
• 25% reclassified: $200,000
• Potential federal tax impact at 37%: approximately $74,000

For an investor acquiring a renovated or furnished rental in Imperial Point, Victoria Park, Poinsettia Heights, Knoll Ridge or Lauderdale-by-the-Sea, this becomes a number worth modeling before you write the offer.

$2 Million Investment Property

• Illustrative land allocation: $400,000
• Depreciable building basis: $1,600,000
• 25% reclassified: $400,000
• Potential federal tax impact at 37%: approximately $148,000

$5 Million Investment Property

• Illustrative land allocation: $1,000,000
• Depreciable building basis: $4,000,000
• 25% reclassified: $1,000,000
• Potential federal tax impact at 37%: approximately $370,000

On a $5 million waterfront property, the land allocation could be substantially greater than 20% — particularly where frontage, lot size, canal location, bridge access and redevelopment value drive the price.

Cost Segregation Example at a Glance

These are illustrations, not estimates for a particular property. A professional study could produce a different percentage, and the land allocation must be established appropriately.

Why Land Allocation Decides the Outcome on the Water

This is the part most national articles get wrong when they claim cost segregation “writes off 20–30% of the purchase price.” In Fort Lauderdale, land value can be enormous.

Two homes selling for the same price can produce dramatically different depreciation outcomes if one purchase price is primarily attributable to the structure and the other is largely attributable to waterfront land.

In Coral Ridge, Bay Colony, The Landings and Lauderdale Harbours, the dirt under the house frequently carries a disproportionate share of the value. That is exactly why buyers need to understand the property before the spreadsheet — the same discipline we walk through in what most buyers get wrong about Fort Lauderdale waterfront homes.

Neighborhood by Neighborhood

Imperial Point

Imperial Point is an unusually interesting investment environment: older single-family homes, renovated rentals, value-add acquisitions, teardown opportunities, new luxury construction, and meaningful land components. We live here, which is why we tend to underwrite it differently than an agent working off a portal — for the full picture, read our complete Imperial Point neighborhood guide.

An investor buying an older home and placing it into rental service may be able to stack rental income, appreciation potential, depreciation, cost segregation and bonus depreciation. That is a very different outcome than simply comparing rent against a mortgage payment.

One caution: if the plan is to eventually redevelop, the projected holding period and possible future demolition should be discussed with a tax professional before accelerating depreciation aggressively.

Coral Ridge and The Landings

Buyers in Coral Ridge, Coral Ridge Country Club and The Landings generally operate at higher acquisition prices, so even a modest reclassification percentage can produce a meaningful first-year deduction. These properties often contain pool equipment, landscaping and site improvements, furnishings in furnished rentals, appliances, specialized lighting and electrical systems, and other components an engineering-based study can identify. Our Coral Ridge market breakdown covers how pricing has been behaving in 2026.

Lauderdale-by-the-Sea

In Lauderdale-by-the-Sea, properties may operate as traditional rentals, furnished rentals or — where legally permitted and properly licensed — shorter-term accommodations. How a property is operated affects more than revenue. It can affect the tax treatment of the activity, material participation, and whether depreciation losses are currently usable.

Victoria Park, Colee Hammock and Rio Vista

Victoria Park, Colee Hammock and Rio Vista mix existing rental homes, high-value land, luxury redevelopment and furnished rentals. Cost segregation can be particularly valuable immediately after a major renovation, because substantial new depreciable components have just been added.

Lauderdale Harbours

For boating-oriented investors, Lauderdale Harbours combines valuable land with highly specialized waterfront improvements. Do not assume docks, seawalls, boat lifts or pools automatically receive a particular classification — each asset, its function and the applicable rules must be analyzed individually.

Knoll Ridge, Poinsettia Heights and East Pompano Beach

Knoll Ridge, Poinsettia Heights and East Pompano Beach present a different thesis. Lower acquisition prices than the premier waterfront neighborhoods can mean a greater share of capital is attributable to the physical structure rather than an extreme land premium — which is often where value-add investors find the cleanest combination of basis, renovation, rent and accelerated depreciation.

Can Cost Segregation Offset Your Other Income?

Potentially — but not automatically.

Rental real estate is generally treated as a passive activity for federal income tax purposes. Passive losses generally cannot be used to offset unlimited wage, business or other nonpassive income.

Different rules may apply to taxpayers who qualify as real estate professionals and materially participate in their rental activities. Under IRS rules, a taxpayer generally qualifies when:

1. More than half of the personal services performed in trades or businesses during the year are performed in real-property trades or businesses in which the taxpayer materially participates; and
2. The taxpayer performs more than 750 hours of services during the year in qualifying real-property trades or businesses.

Brokerage, development, redevelopment, construction, acquisition, rental, management and leasing can fall within the definition of real-property trades or businesses. Qualification alone is not necessarily enough — material participation in the applicable rental activity must also be analyzed. This is where a knowledgeable CPA or tax attorney is essential.

What Does “Placed in Service” Mean?

Purchasing a property and placing it in service are not the same event. For depreciation purposes, the relevant concept is generally when the property is ready and available for its intended income-producing use.

An investor might close in October, renovate through November, and make the property available for rent in December. Depending on the facts, December becomes the placed-in-service date. That timing can be decisive for an investor trying to generate a deduction in a particular tax year — and it is one more reason the acquisition timeline itself deserves attention, alongside the fundamentals in our guide to the five things every buyer should know before purchasing in Fort Lauderdale.

What Happens When You Sell?

Accelerated depreciation is primarily a timing strategy, not free money. When the property is sold, depreciation previously taken affects adjusted basis and may create depreciation-recapture consequences.

It can still be extremely valuable, because it gives the investor use of the tax savings today rather than decades from now. That retained capital can reduce debt, fund renovations, acquire additional real estate, maintain liquidity, build reserves, or seed the next project.

Cost Segregation Is Really a Capital-Allocation Strategy

The biggest mistake is treating cost segregation as just another deduction.

Consider an investor who legitimately accelerates $400,000 of depreciation. If that produces six figures of current tax savings, the investor has retained capital that otherwise would have gone to the federal government this year. Across a multi-property portfolio, that materially influences cash-on-cash returns, available liquidity, and the speed at which capital compounds.

That is why tax strategy belongs inside the acquisition analysis — not in the April conversation.

When Should a Fort Lauderdale Investor Consider a Study?

• Purchasing a residential rental property
• Acquiring a furnished rental
• Buying a multifamily or commercial property
• Completing a substantial renovation
• Acquiring higher-value real estate
• Building a portfolio across multiple properties
• Expecting substantial taxable income
• Qualifying as a real estate professional
• Looking for ways to improve after-tax investment returns

The larger the depreciable basis, the more significant the potential benefit. But every transaction should be modeled independently.

Frequently Asked Questions

What is a cost segregation study?

A cost segregation study is an engineering-based analysis that separates an investment property into different depreciation categories, identifying components that qualify for shorter 5-, 7- or 15-year recovery periods instead of the standard 27.5 years for residential rental property or 39 years for commercial property.

Is the entire purchase price eligible for 100% bonus depreciation?

No. Land is not depreciable, and the primary structure of a residential rental generally remains 27.5-year property. Cost segregation identifies qualifying shorter-life assets within the property’s depreciable basis — not the full purchase price.

Is 100% bonus depreciation available in 2026?

Yes. Under current federal law, 100% bonus depreciation was permanently restored for qualifying property acquired and placed in service after January 19, 2025, and the IRS issued interim guidance on it in Notice 2026-11 in January 2026.

What property generally qualifies for bonus depreciation?

Among other categories, tangible MACRS property with a recovery period of 20 years or less can qualify when the other requirements are met — which is why the 5-, 7- and 15-year components identified in a cost segregation study are the relevant target.

Does 100% bonus depreciation apply to used real estate?

Potentially, yes. Qualifying property eligible for bonus depreciation can include certain used property, provided the taxpayer had not previously used the asset and the other requirements are met. That matters in Fort Lauderdale, where investors routinely buy existing homes rather than new construction.

Can a single-family rental qualify for cost segregation?

Yes. A residential rental property can contain components with shorter depreciation lives even though the primary building structure is generally depreciated over 27.5 years.

Can I cost segregate a property I already bought?

Potentially. Studies are not necessarily limited to the year of purchase, and investors sometimes work with their tax professionals to determine whether prior depreciation can be corrected through an accounting-method change. Do not amend prior returns without qualified tax guidance.

How much of a property does cost segregation typically accelerate?

There is no universal percentage. Property type, improvements, construction, and land allocation all determine the result. Be cautious of anyone promising a predetermined deduction before analyzing the actual property — especially on waterfront parcels where land carries a large share of value.

Does a cost segregation study guarantee I can use the entire loss this year?

No. Passive activity, at-risk and basis rules can limit deductions. The deduction generated and the deduction currently usable are two different questions.

Should I complete a study before buying?

You generally do not need a completed study before closing. But understanding the potential tax impact before you acquire improves your underwriting and your year-end planning.

Do docks, seawalls and boat lifts qualify for accelerated depreciation?

Not automatically. Waterfront improvements must be analyzed individually based on the specific asset, its function and the applicable tax rules. In neighborhoods like Lauderdale Harbours and Bay Colony, this analysis is worth doing properly rather than assuming.

Further Reading

• Florida Property Tax Reform: What Fort Lauderdale Homeowners Need to Know (2026)
• Imperial Point Fort Lauderdale: Complete Neighborhood Guide (2026)
• Coral Ridge Real Estate: Why This Fort Lauderdale Neighborhood Attracts High-End Buyers (2026)
• Waterfront Homes in Fort Lauderdale: What Most Buyers Get Wrong (2026)
• 5 Things Every Buyer Should Know Before Purchasing a Home in Fort Lauderdale

Modeling a Fort Lauderdale Investment Purchase?

At the Ziegelbaum Group at Compass, we work with investors throughout East Fort Lauderdale, Lauderdale-by-the-Sea and East Pompano Beach to evaluate acquisitions on the full picture — acquisition basis, rental potential, renovation opportunity, redevelopment value, land value, exit strategy and long-term appreciation — not just today’s asking price.

We are not your CPA. But we can tell you what the dirt is worth, what the structure is worth, what it will rent for, and what the exit looks like — before you commit capital.

TALK TO US ABOUT YOUR NEXT ACQUISITION

📞 954-540-9119
🌐 ZiegelbaumGroup.com
📩 info@ziegelbaumgroup.com

Josh & Karla Ziegelbaum
Ziegelbaum Group at Compass — Fort Lauderdale Real Estate Advisors
A Modern Approach to Luxury Real Estate
Fort Lauderdale • Lauderdale-by-the-Sea • East Pompano Beach

This article is provided for general informational and educational purposes only and is not tax, accounting, investment or legal advice. Cost-segregation results, bonus-depreciation eligibility, land allocations, passive-activity treatment, depreciation recapture and the ability to utilize losses depend on each taxpayer’s individual circumstances. Investors should consult a qualified CPA, tax attorney and/or cost-segregation professional before implementing any tax strategy.