A house was built in 1985 but has been well-maintained and recently updated. If the appraiser determines the effective age to be 12 years and the total economic life to be 60 years, what is the remaining economic life?
Correct Answer
D) 48 years
Why this is correct: Remaining Economic Life (REL) = Total Economic Life (TEL) - Effective Age. Effective age reflects condition relative to new. Calculation: 60 years (TEL) - 12 years (Effective Age) = 48 years (REL). Why the other choices are wrong: 60 years is the total economic life, not the remaining life. 27 years incorrectly uses actual age (1985 to present) or a miscalculation. 72 years incorrectly adds effective age to total life. Exam tip: REL is based on effective age, not chronological age. REL = TEL - Effective Age.
Why This Is the Correct Answer
Option B is correct because remaining economic life is calculated by subtracting effective age from total economic life. The formula is straightforward: Total Economic Life - Effective Age = Remaining Economic Life. In this case, 60 years - 12 years = 48 years. The actual age of the house (built in 1985, making it approximately 38-39 years old) is irrelevant to this calculation because the effective age of 12 years already accounts for the property's current condition due to maintenance and updates.
Why the Other Options Are Wrong
TREE Formula
TREE: Total minus Effective equals Remaining Economic life. Think of a tree's remaining life - you don't count from when it was planted (actual age), but from how healthy it looks now (effective age).
How to use: When you see any remaining economic life question, immediately think TREE and look for the total economic life and effective age numbers to subtract. Ignore any actual age information as it's typically a distractor.
Exam Tip
Always identify the effective age and total economic life first, then apply the simple subtraction formula. Watch out for actual age as a distractor - it's often provided but not needed for the calculation.
Common Mistakes to Avoid
- -Using actual age instead of effective age in the calculation
- -Confusing remaining economic life with total economic life
- -Adding instead of subtracting effective age from total economic life
Concept Deep Dive
Analysis
This question tests the fundamental concept of remaining economic life in real estate appraisal, which is a critical component of the cost approach to valuation. The key insight is understanding the difference between actual age (chronological age since construction) and effective age (age based on condition and functionality). Effective age reflects how well a property has been maintained and updated, and can be significantly different from actual age. The calculation of remaining economic life uses effective age, not actual age, because it represents the property's current condition and expected future utility.
Background Knowledge
Effective age represents the age of a property based on its current condition, maintenance, and functionality rather than its chronological age since construction. Total economic life is the period over which a structure is expected to contribute to property value, while remaining economic life is the number of years left in that useful period.
Real-World Application
In practice, an appraiser might encounter a 40-year-old building that has been extensively renovated with new systems, giving it an effective age of only 10 years. For depreciation calculations in the cost approach, the appraiser would use the 10-year effective age, not the 40-year actual age, resulting in less depreciation and higher value.
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