Cost Approach and Depreciation on the Florida Real Estate Exam (2026)

What this guide covers

1. The cost approach formula
2. Reproduction cost vs replacement cost
3. The three types of depreciation (physical, functional, external)
4. Curable vs incurable depreciation
5. The age-life depreciation method with a worked example
6. When the cost approach is most useful and least useful
7. Cost approach in the Florida exam context (the three approaches to value)
8. Four ways the exam can ask this (with tempting wrong-answer patterns)
9. A worked-scenario walkthrough end to end
10. Traps that cost points
11. A short practice loop
12. FAQ, methodology, and sources

The cost approach formula

Snippet answer: Cost approach value equals land value plus reproduction or replacement cost new minus accrued depreciation. Depreciation applies to the improvements, not the land.

The cost approach answers a simple question: what would it cost today to recreate this property, accounting for the wear and outdated features it already has?

The formula is:

Property Value = Land Value
               + Reproduction (or Replacement) Cost New
               - Accrued Depreciation

Three components. Each is its own decision.

• Land value is estimated separately, typically using the sales comparison approach on comparable vacant land sales. Land does not depreciate (in standard appraisal theory), so it sits outside the depreciation calculation.
• Reproduction or replacement cost new is the current cost to construct an equivalent building. The "new" part matters: it is the cost as if the building were built today, not the historical cost when it was actually built.
• Accrued depreciation is the total loss in value from all three depreciation types (physical, functional, external). It is subtracted from the cost-new figure because the existing building is not new.

The formula's order is the exam's hint: separate the land, calculate the cost-new of just the improvements, then subtract depreciation. Mixing land into the depreciation calculation is one of the most common candidate errors.

Reproduction cost vs replacement cost

Snippet answer: Reproduction cost duplicates the exact structure. Replacement cost builds equal utility with current materials and design. The exam uses this distinction to trap older-building questions.

These two terms are commonly confused. They are not synonyms.

For exam purposes, the practical rule:

• Reproduction cost preserves the architecture exactly (including outdated features). It tends to be higher than replacement cost for older buildings.
• Replacement cost preserves utility but updates materials and design. It tends to be lower than reproduction cost for older buildings because it does not duplicate obsolete features.

A tempting exam trap is to treat the two as identical. They differ specifically on whether the cost figure includes the value of recreating outdated features.

The three types of depreciation

Snippet answer: Physical deterioration is wear and tear, functional obsolescence is outdated design, and external obsolescence is loss from outside forces.

This is the most-tested aspect of the cost approach. The Florida exam consistently asks candidates to identify which type of depreciation a given fact pattern describes.

Physical deterioration

Loss in value from wear, tear, and the passage of time acting on the physical structure.

Examples: peeling paint, worn carpet, leaky roof, cracked foundation, faded exterior, old HVAC system at end of useful life.

Physical deterioration is what most people think of when they hear "depreciation." It is the deterioration of the physical components of the building.

Functional obsolescence

Loss in value from outdated design, layout, or features that no longer meet current market demands, even if the building is physically sound.

Examples: a 1960s-era kitchen layout with no dishwasher hookup, a five-bedroom house with only one bathroom, ceilings too low for modern preference, a master bedroom with no closet, an industrial-zoned building configured for a manufacturing process that the market no longer needs.

Functional obsolescence is about design and features, not physical condition. A perfectly maintained building can still suffer functional obsolescence if its design is outdated.

External (economic) obsolescence

Loss in value from forces outside the property itself. The property is physically sound and functionally well-designed, but external conditions reduce what the market will pay.

Examples: a new highway built next to a residential property creating noise and pollution; nearby industrial contamination; neighborhood decline; rezoning that limits the property's use; loss of a major local employer; oversupply of similar properties in the local market.

External obsolescence is almost always incurable from the owner's perspective because the cause is outside the owner's control. You cannot reroute the highway by repairing the house.

Curable vs incurable depreciation

Snippet answer: Curable is an economic test: the fix is curable when the cost to cure is less than or equal to the value added. It is incurable when the cost exceeds the value added.

Each of the three types can be either curable or incurable.

The exam's curable / incurable test is straightforward: a depreciation item is curable when the cost of curing it is less than or equal to the value it adds. It is incurable when the cost exceeds the value added.

That economic test is the answer to most curable-vs-incurable exam questions, not a list of which features happen to be "fixable" in the physical sense.

The age-life depreciation method

Snippet answer: Age-life depreciation equals effective age divided by total economic life, multiplied by cost new of the improvements.

For physical deterioration on a whole-building basis, appraisers commonly use the age-life method to estimate accrued depreciation.

The formula:

Accrued Depreciation = (Effective Age / Total Economic Life)
                       x Reproduction or Replacement Cost New

Three terms:

• Effective age: the appraiser's estimate of how old the building appears given its current condition, maintenance, and modernization. A well-maintained 30-year-old house might have an effective age of 15 years. A neglected 30-year-old house might have an effective age of 40 years.
• Total economic life: the appraiser's estimate of how long the building will remain economically useful from new. Single-family residential buildings typically have total economic lives in the 50-to-70-year range, but the appraiser chooses the figure based on the specific property.
• Reproduction or replacement cost new: the cost-new figure from earlier in the calculation.

A worked age-life example

Suppose a property has these facts:

• Land value: $80,000
• Replacement cost new of the improvements: $250,000
• Effective age: 12 years
• Total economic life: 60 years

Step 1: Depreciation rate

12 / 60 = 0.20 = 20%

Step 2: Accrued depreciation

$250,000 x 20% = $50,000

Step 3: Depreciated cost of improvements

$250,000 - $50,000 = $200,000

Step 4: Total property value

$80,000 (land) + $200,000 (depreciated improvements) = $280,000

The age-life method captures physical deterioration cleanly. For functional and external obsolescence, appraisers typically add separate adjustments because those items do not track the building's age in the same way.

When the cost approach is most useful and least useful

Snippet answer: The cost approach is strongest for new construction, special-purpose property, and insurance valuation. It is weaker for older residential property when good comparable sales exist.

The cost approach is not the most appropriate method for every property. The exam tests whether you can identify when it fits and when it does not.

Most useful when

• The improvements are new or nearly new. Depreciation is minimal, so the cost-new figure approximates current value closely.
• The property is special-purpose (churches, schools, government buildings, fire stations, museums). Few comparable sales exist for the sales comparison approach to use. Income data may not exist for the income approach. The cost approach becomes the most practical method.
• Insurance valuation. Insurance companies care about replacement cost because that is what they would pay to rebuild after a loss. Market value is a different question.
• New construction. For appraising a newly built home, the cost figure is recent, depreciation is near zero, and the calculation is reliable.

Least useful when

• The property is older residential. Depreciation estimates dominate the calculation, and depreciation is subjective. The sales comparison approach is usually more reliable.
• The market has many comparable sales. When good comparables exist, the sales comparison approach gives a more direct measure of what buyers are paying.
• The property is income-producing. For investment properties, the income approach (capitalization of net operating income) is typically the most relevant method.

The exam may ask "which approach is most appropriate for this property" and give a fact pattern that points clearly toward one of the three approaches. The cost approach's two strongest fact-pattern signals are "new construction" and "special-purpose property."

Cost approach in the Florida exam context

Snippet answer: The Florida exam tests cost approach as appraisal literacy: formula, vocabulary, when to use it, and how it differs from sales comparison and income approaches.

The Florida sales associate exam, administered through the DBPR Real Estate Sales Associate Candidate Information Booklet content outline, covers appraisal as a topic area. Within appraisal, there are three approaches to value:

1. Cost approach (this guide): Land + Cost New - Accrued Depreciation
2. Sales comparison approach: adjusted comparable sales of similar properties
3. Income approach: capitalization of net operating income (NOI / capitalization rate)

The exam tests whether you can recognize which approach fits a given fact pattern, what each approach measures, and the vocabulary specific to each. The cost approach's distinctive vocabulary (reproduction cost, replacement cost, physical / functional / external obsolescence, curable / incurable, effective age, total economic life, age-life method) is the part most commonly tested.

For a Florida sales associate, the cost approach is not something you would typically perform yourself as an appraisal assignment. Issuing an appraisal report in Florida generally requires a state-licensed or state-certified appraiser credential, or registered trainee status under proper supervision, under F.S. 475 Part II. The exam tests cost-approach concepts because they are part of the broader appraisal-literacy expected of licensees, not because sales associates perform appraisals.

For more on who may perform what valuation work in Florida, see Comparative Market Analysis vs Appraisal vs BPO.

Four ways the exam can ask this

Snippet answer: Expect four patterns: identify the depreciation type, decide curable vs incurable, choose the right approach to value, or solve age-life depreciation math.

Pattern 1: Identify the depreciation type

The stem describes a specific defect or condition and asks which type of depreciation it represents.

Best path: match the cause to one of the three categories. Wear and tear means physical. Outdated design or features means functional. Outside forces mean external.

Tempting wrong-answer pattern: a choice that names the wrong category because the candidate confused "outdated" with "external." A 1960s kitchen layout is functional obsolescence (design), not external obsolescence (forces outside the property). External obsolescence is almost always something happening off the property.

Pattern 2: Curable or incurable

The stem describes a depreciation item and asks whether it is curable. The candidate is supposed to apply the economic test.

Best path: ask whether the cost of curing exceeds the value added. If cost <= value added, curable. If cost > value added, incurable.

Tempting wrong-answer pattern: a choice that says "incurable because it cannot be fixed physically." That treats curable as a physical-possibility question. The Florida exam treats curable as an economic test.

Pattern 3: When to use the cost approach

The stem describes a property and asks which of the three approaches to value is most appropriate.

Best path: look for the cost-approach signals (new construction, special-purpose property, insurance valuation). Look for the sales-comparison signals (many comparable sales, residential resale). Look for the income-approach signals (rental property, capitalization, NOI).

Tempting wrong-answer pattern: a choice that says "use all three approaches and average them." Appraisers consider the applicable approaches and reconcile them based on the assignment and property type. Averaging is not a defensible methodology and is not the correct answer.

Pattern 4: Age-life math

The stem gives effective age, total economic life, and cost-new and asks for accrued depreciation or for the depreciated cost of improvements.

Best path: depreciation rate = effective age / total economic life. Accrued depreciation = rate x cost new. Depreciated cost = cost new - accrued depreciation. Total value = land value + depreciated cost.

Tempting wrong-answer pattern: a choice that uses actual age instead of effective age. The exam often gives both numbers in the stem to trap candidates who grab the first age they see. Effective age is the operative term in the age-life formula.

The recurring pattern across all four: the wrong answers feel right because they match a familiar word (outdated, fixed, average, age) without matching the specific concept the question is testing. Identify the precise concept first, then choose the answer.

A worked-scenario walkthrough

Snippet answer: In a full cost-approach problem, calculate physical depreciation on improvements, subtract separate functional and external losses, then add land value back at the end.

Here is what a multi-step cost-approach question looks like end to end.

The stem. A newly constructed single-family home in Tampa has the following facts. Land value (based on comparable land sales): $90,000. Replacement cost new of the improvements: $310,000. Effective age: 2 years. Total economic life: 60 years. The home has a one-car garage in a neighborhood where two-car garages are standard, which the appraiser estimates reduces market appeal by $8,000 (curable functional obsolescence). A new four-lane road built one block away after construction reduces the property's market appeal by $12,000 (external obsolescence, incurable). What is the property's value under the cost approach?

Run the formula step by step.

Step 1: Age-life physical depreciation.

• Depreciation rate: 2 / 60 = 3.33% (let's use 3.33%)
• Physical depreciation: $310,000 x 3.33% = approximately $10,323

Step 2: Add functional obsolescence.

• One-car garage in two-car neighborhood: $8,000

Step 3: Add external obsolescence.

• New road one block away: $12,000

Step 4: Total accrued depreciation.

• $10,323 + $8,000 + $12,000 = $30,323

Step 5: Depreciated cost of improvements.

• $310,000 - $30,323 = $279,677

Step 6: Total property value under cost approach.

• $90,000 (land) + $279,677 (depreciated improvements) = approximately $369,677

The number itself is less important than the procedure. The exam may give you any subset of these facts and ask for any one of the intermediate or final values.

Tempting wrong answers and why they fail:

The defensible answer pattern: a choice that applies physical depreciation only to the improvements, treats the functional and external losses as separate subtractions, and adds the land value back in at the end is more likely correct than any choice that mixes the steps or applies the age-life ratio to the land.

Traps that cost points

Snippet answer: The big traps are depreciating land, using actual age instead of effective age, confusing functional with external obsolescence, and averaging all three approaches.

A short practice loop

Snippet answer: Practice cost approach in short loops: answer focused questions, tag the miss type, rewrite the rule, then mix it with sales comparison and income approach questions.

Use this loop after you understand the formula and the three depreciation types.

1. Answer 10 focused questions on the cost approach.
2. Mark every miss by cause: formula step, depreciation type, curable/incurable, age-life math, or when-to-use-which-approach.
3. Rewrite the missed rule in one plain sentence.
4. Answer five mixed appraisal questions so the cost approach appears alongside sales comparison and income approach.
5. Stop when the miss pattern changes, not when the page feels familiar.

Two-answer repair

When you narrow to two answers, ask which choice keeps land outside the depreciation calculation and applies the correct depreciation type. Do not choose the answer that only sounds more familiar.

What to pair with this

Snippet answer: Pair this with the appraisal guide, sales comparison, income approach, appreciation/depreciation math, and general math formulas so the three approaches do not blur together.

FAQ

Snippet answer: The core FAQ answers are the formula, reproduction versus replacement, three depreciation types, age-life method, and when the cost approach is strongest.

What is the cost approach formula?

Property value = Land Value + Reproduction or Replacement Cost New - Accrued Depreciation. Land is estimated separately. Depreciation is subtracted only from the cost-new of the improvements, not from the land.

What is the difference between reproduction cost and replacement cost?

Reproduction cost is the cost to build an exact duplicate of the existing structure using the same materials and design. Replacement cost is the cost to build a structure of equal utility using current materials and standards. Replacement cost is usually lower for older buildings because it does not duplicate outdated features.

What are the three types of depreciation?

Physical deterioration (wear and tear), functional obsolescence (outdated design or features), and external or economic obsolescence (forces outside the property). Each can be curable or incurable based on the economic test (cost of curing vs value added).

What is the age-life method?

Accrued depreciation = (Effective Age / Total Economic Life) x Reproduction or Replacement Cost New. Effective age reflects the building's apparent condition; total economic life is the typical useful life for the property type.

When is the cost approach most useful?

For new construction (minimal depreciation), special-purpose properties (churches, schools, government buildings; few comparables exist), and insurance valuations (replacement cost is the relevant metric). For older residential properties with many comparable sales, the sales comparison approach is usually more reliable.

Methodology

This guide was built from the appraisal-method framework as it appears in the DBPR Real Estate Sales Associate Candidate Information Booklet, standard appraisal-textbook treatment of the cost approach (formula, reproduction vs replacement, three depreciation types, age-life method), the Florida appraisal-regulation framework at F.S. 475 Part II, and Pass Florida's controlling-fact framework for Florida exam topics. The cost-approach formula, the three-depreciation-types taxonomy, the curable / incurable economic test, the age-life method, the four-pattern exam taxonomy, and the worked-scenario walkthrough are practical study patterns derived from common candidate mistakes, not DBPR, FREC, USPAP, or appraisal-industry rules.

This post does not promise a passing result on the Florida real estate exam and is not a substitute for the required 63-hour pre-license course, the DBPR application process, Pearson VUE scheduling, qualified counsel, or qualified appraiser guidance. The worked-scenario walkthrough uses a constructed fact pattern (Tampa single-family home with one-car garage and new road) designed to illustrate the cost-approach procedure; actual exam stems vary in wording, numbers, distractors, and answer-choice structure. Numerical results in the walkthrough are rounded for clarity. Florida appraisal regulation, USPAP standards, and exam content can change; verify current frameworks with the official sources before relying on this summary for any real transaction. The guide was last reviewed on June 27, 2026.

Product note. Pass Florida is our Florida-specific exam prep app. This page references our own product, so the relationship is direct and disclosed. We do not claim to use copied exam questions, promise passage, or replace official DBPR, Florida Real Estate Commission (FREC), Florida Real Estate Appraisal Board (FREAB), Pearson VUE, course provider, broker, appraiser, lender, local real estate association, MLS, legal, tax, or professional guidance. Pass Florida is independent exam prep and is not a DBPR-approved 63-hour pre-license course or continuing education.

This post is exam preparation content for the Florida Real Estate Sales Associate exam and is not a guarantee of passing the exam. It is not legal, tax, financial, lending, appraisal, brokerage, insurance, title, closing, USPAP-compliance, or professional advice. Appraisal methodology and the cost approach as practiced by state-licensed and state-certified appraisers can vary by property type and assignment; for any real valuation, insurance, or transaction decision, consult a qualified Florida-licensed appraiser and verify the current Florida appraisal regulation framework directly with the official source before acting.

Sources

• F.S. 475 Part II: Real Estate Appraisers
• F.S. 475.611: Appraisal-practice definitions
• F.S. 475.612: Certification, licensure, or registration required
• F.S. 475.628: Professional standards for appraisers
• Florida Statutes Chapter 475: Real Estate Brokers, Sales Associates, Schools, and Appraisers
• DBPR Real Estate Sales Associate Candidate Information Booklet
• Florida Real Estate Appraisal Board (FREAB)
• The Appraisal Foundation: USPAP