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Property Valuation Financial AnalysisCost_approachMEDIUM

An appraiser is estimating accrued depreciation for a 15-year-old well-maintained residence located near a major transit facility that generates substantial ongoing noise. Which depreciation method is most appropriate, and why?

Correct Answer

B) The observed condition (breakdown) method, because it allows each category of depreciation to be identified and quantified independently

The observed condition (breakdown) method separately identifies and measures each category of depreciation: physical deterioration, functional obsolescence, and external obsolescence. This granularity is essential when depreciation sources are uneven — here, physical deterioration is likely minimal due to good maintenance, while external obsolescence from transit noise may be substantial. The age-life method applies a single effective-age-to-total-economic-life ratio that blends all depreciation into one figure, obscuring the disproportionate impact of external obsolescence and producing a less accurate result.

Answer Options
A
The age-life method, because it captures all forms of depreciation proportionally when a property has mixed depreciation sources
B
The observed condition (breakdown) method, because it allows each category of depreciation to be identified and quantified independently
C
The age-life method, because external obsolescence from noise is excluded from depreciation analysis and handled separately in the sales comparison approach
D
Either method produces equivalent results when the appraiser applies consistent assumptions throughout the cost approach

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Related Topics & Key Terms

Key Terms:

breakdown_methodage_lifeexternal_obsolescencedepreciation_methodshigh_speed_rail
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