The Relevance of the Cost Approach in Stabilized Income-Producing Properties

1. Introduction

The selection of valuation methodology is one of the most critical decisions in appraising income-producing properties. Under Texas Property Tax Code §23.0101, the chief appraiser is required to “consider the cost, income, and market data comparison methods of appraisal and use the most appropriate method.”

For stabilized, income-producing properties such as apartment complexes, office buildings, retail centers, and self-storage facilities, the income approach typically emerges as the most appropriate primary method. However, the cost approach — while not controlling — provides essential secondary analysis that validates, supports, or challenges the income approach's conclusions.

This article examines when and how the cost approach is relevant for stabilized income properties, with specific application to property tax appeal proceedings before Texas Appraisal Review Boards (ARBs).

2. Why the Income Approach Dominates

2.1 Market participant decision-making

Investors purchasing stabilized income-producing properties do not think about replacement cost. They think about cash flow. The decision-making framework employed by market participants is:

• What is the Net Operating Income (NOI)?
• What capitalization rate does the market require for this property type and location?
• Value = NOI ÷ Cap Rate

This is not a theoretical construct — it is the actual methodology employed by institutional investors, commercial real estate funds, REITs, and individual investors when making acquisition decisions.

2.2 Statutory mandate under §23.0101

Texas Tax Code §23.0101 requires the chief appraiser to use “the most appropriate method” after considering all three approaches. For stabilized income properties, the income approach is the most appropriate because:

• It directly reflects how market participants value the property
• Abundant comparable sales data is available for cap rate benchmarking
• NOI can be verified through actual operating history and rent rolls
• Market rent comparables are obtainable through commercial real estate services
• The property's own performance supports an income-based valuation

3. Why the Cost Approach Is Limited

3.1 Cost does not equal market value

A fundamental principle in appraisal is that cost (or replacement cost) does not necessarily equal market value. For income properties, this disconnect is particularly pronounced.

4. The Four Relevant Roles of the Cost Approach

4.1 Sanity check and reasonableness verification

The cost approach serves as a reasonableness test for the income approach. When the two converge, it validates that the cap rate and depreciation assumptions are market-supported.

4.2 Floor value analysis

For distressed or lease-up phase properties, the cost approach can indicate the minimum value below which the property would not make economic sense.

4.3 Identification of economic obsolescence

When the cost approach significantly exceeds market value, it signals economic obsolescence — the property is worth less than it cost to build due to market, location, or design factors beyond normal depreciation.

4.4 Support for new or recently improved properties

For newly constructed or recently renovated properties, the cost approach approaches parity with the income approach, as depreciation is minimal and market expectations for new construction are high.

5. Case Study: The Crossing

5.1 Property overview

An unanchored retail strip center in Harris County, Texas:

5.2 Cost approach analysis

5.3 Income approach analysis (corrected)

5.4 Reconciliation

5.5 What the cost approach reveals

The cost approach's proximity to market value ($4.088M cost vs. $4.1M market) validates several critical conclusions:

• The income approach is reasonable: when depreciated cost aligns with income-derived value, it confirms the cap rate is market-supported.
• No economic obsolescence: the property is not worth significantly less than construction cost, indicating location and design are market-appropriate.
• The CAD's error is evident: the $4.7M assessment implies the property is worth more than it cost to build after only three years, violating basic valuation principles.
• Depreciation is appropriate: the Marshall & Swift 3% depreciation for a three-year-old building is properly applied.

6. Case Study: Travis County Self-Storage

6.1 Property profile

A typical 15,000 SF stabilized self-storage facility in a Travis County secondary market.

6.2 Income approach (controlling)

6.3 Cost approach (secondary)

6.4 Why the cost approach is not controlling

The cost approach indicates $1,780,000 while the income approach indicates $1,625,400 — the income conclusion sits roughly 9% below depreciated cost. The two methods bracket the same value range, and that relationship reveals:

• Mild economic obsolescence: the modest gap reflects secondary-market rents and expense loads rather than physical deficiency.
• Market reality: investors do not build new self-storage facilities at 7–8% cap rates; they acquire stabilized properties at these rates, so cost sets an upper bound.
• Income is controlling: market participants value self-storage by income-producing capability, not construction cost.
• Relevance of cost: the convergence confirms the cap rate and depreciation assumptions in the income approach are market-supported.

7. Relevance Matrix

8. Presenting Cost Approach Relevance at an ARB Hearing

8.1 Opening statement

“We presented three valuation approaches. I want to explain why each one matters for a stabilized income-producing property like this.

The income approach is the controlling method. This property was purchased to generate income. Investors value it based on its net operating income and market cap rates. That is the market reality.

The cost approach serves as a reality check. Our cost approach — based on Marshall & Swift replacement cost with proper depreciation — comes to $4.088 million. Our income approach comes to $4.0 million.

The fact that these are very close tells you our income approach is reasonable. We are not using an artificially high cap rate to force the value down. If we had produced a $2 million income value, the cost approach would have signaled that something was wrong. They align, which gives us confidence both are correct.”

8.2 For the ARB written brief

Under Texas Tax Code §23.0101, the chief appraiser must use the most appropriate method for valuing property. For stabilized, income-producing properties, that method is the income approach. The cost approach serves a secondary role — to validate that the income approach's cap rate and depreciation assumptions are market-supported:

9. Common Appraisal District Errors

9.1 Making the income approach match the cost approach

The mistake: “Let's use the income method but adjust it to align with the cost approach.” This reverses the hierarchy. The cost approach should support the income approach, not the other way around.

9.2 Underweighting market cap rate evidence

The mistake: “We'll use a 6.5% cap rate based on cost approach alignment rather than 7.5% supported by market data.” Market cap rates reflect actual investor behavior. A differing cost approach result indicates economic obsolescence or other market adjustments — which the income approach is designed to capture.

9.3 Excessive or inapplicable depreciation schedules

The mistake: treating mass-appraisal depreciation schedules (typically 3–4% per year for retail) as market depreciation. They may not reflect actual conditions, especially in lease-up situations or weak markets. The income approach adjusts for this; the cost approach cannot.

The deeper problem is upstream of the percentage. A schedule's depreciation figure is generally derived from an effective age the district's model assigned by class and year built, not from anything observed at the subject property. Challenge that input rather than the resulting percentage, and put three questions to the appraiser: what is the basis for the effective age assigned to this property, when was it last inspected, and what supports the total economic life used in the schedule. Where renovation records, condition reports, or capital expenditure history point to a different effective age, a subject-specific effective age supported by that evidence is the counter-exhibit.

10. Conclusion

The cost approach for stabilized income-producing properties is relevant not as a controlling valuation method, but as:

• A sanity check confirming income approach cap rates are reasonable
• A floor value indicator for distressed or lease-up properties
• A diagnostic tool identifying economic obsolescence
• A support methodology for new or recently improved properties

When the income and cost approaches converge (within 5–15%), it provides strong validation that the appraisal methodology is sound and market-supported. When they diverge significantly (more than 20%), it signals either that economic obsolescence is present, that cap rate assumptions need review, or that the income approach is the controlling method for good reason.

Under Texas Tax Code §23.0101, appraisers and ARB members must select the most appropriate method based on property type and market conditions. For stabilized income properties, the income approach — supported by market-based comparable sales and cap rate data — emerges as the controlling methodology. The cost approach's role is secondary validation, not primary determination.

Property owners appealing assessments of income-producing properties should emphasize the income approach while using the cost approach as confirmatory evidence that their methodology is reasonable, market-supported, and compliant with Texas appraisal standards.

References

1. 01Texas Property Tax Code §23.0101: “Consideration of Alternate Appraisal Methods.” Requires the chief appraiser to consider cost, income, and market data comparison methods and use “the most appropriate method.” Vernon's Texas Statutes Annotated.
2. 02Texas Property Tax Code §23.01: “Appraisals Generally.” Defines market value and requires appraisal “at its market value as of January 1” using generally accepted appraisal methods and techniques.
3. 03The Appraisal of Real Estate, 14th ed. Chicago: Appraisal Institute, 2019.
4. 04USPAP 2022–2023 Edition, “Uniform Standards of Professional Appraisal Practice,” The Appraisal Foundation.
5. 05Appraisal Review Board Training Manual, Texas Comptroller of Public Accounts — Ch. 4 and Ch. 5.
6. 06CoStar Market Data (Q4 2025): cap rate ranges by property type and market classification; Partners Real Estate Houston Retail Market Report.
7. 07Yardi Matrix National Self-Storage Report (March 2026): cap rate benchmarks and operating expense data by market tier.
8. 08Marshall & Swift / CoreLogic Cost Database (2026): replacement cost estimates and depreciation schedules.
9. 09Realty Rates Q4 2024 Survey: equity dividend rates, mortgage constants, and cap rate expectations.
10. 10American Council of Life Insurers (ACLI) Data (Q4 2024): commercial mortgage rates, LTVs, and amortization terms.
11. 11RentCafe Self Storage Research (January 2026): market rental rate surveys for Texas self-storage.
12. 12Marcus & Millichap Commercial Investment Report: Texas retail and self-storage market analysis.
13. 13Bexar Central Appraisal District ARB Manual: “Commercial — ARB Frequently Asked Questions.”
14. 14Texas Tax Code §23.012: “Income Method of Appraisal.”
15. 15Texas Comptroller Guidance on Valuing Property: market value and the cost approach in reconciliation.