Why is vacancy loss deducted even when the subject is fully rented today?
Correct Answer
B) Value rests on typical performance over time, not this month
Why this is correct: Market value is based on the expectation of typical, stabilized performance over an investment holding period, not a single moment in time. Even a fully occupied property will experience vacancy between tenants over time. Effective Gross Income reflects a long-term average. Why the other choices are wrong: While lenders do require it, the fundamental reason is about market value, not form compliance. Full occupancy does not necessarily indicate below-market rents. Vacancy deduction is for income loss, not capital expenses. Exam tip: In the income approach, use stabilized, typical vacancy, not just current occupancy.
Why This Is the Correct Answer
Value rests on typical performance over time, and turnover and collection loss are certain over a holding period even where the property is fully rented today.
Why the Other Options Are Wrong
Option A: Lenders require the deduction on their underwriting forms
Lender forms may require the deduction, but the reason for it is analytical rather than administrative.
Option C: Full occupancy strongly suggests the rents sit below market
Full occupancy may indicate below-market rents, but it may equally indicate strong management or a tight market. The deduction is not a rent inference.
Option D: The deduction offsets future capital expenses
Capital expenses are handled through reserves or as separate deductions, not offset by the vacancy allowance.
Today Is Not the Holding Period
Today Is Not the Holding Period. Full this month; somebody moves out next year.
How to use: Match the deduction to the rate's derivation. That consistency is the deeper reason for the adjustment.
Exam Tip
Persistent divergence between actual and market occupancy is worth investigating rather than adopting — it usually signals rents or management.
Common Mistakes to Avoid
- -Using current occupancy as the stabilised figure
- -Treating the deduction as a lender formality
- -Confusing the vacancy allowance with reserves for capital items
Concept Deep Dive
Analysis
Value in the income approach rests on what a property will typically produce over a holding period, not on a snapshot of one month. A building fully rented today will still see tenants leave, units sit vacant between tenancies, and occasional rent go uncollected — those events are certain over time even though none of them is happening now. Deducting a stabilised vacancy and collection loss builds that certainty into the projection. There is a second reason with more analytical force: the capitalization rate was extracted from sales of properties that themselves experienced normal vacancy, so their prices already reflect it. Applying that rate to an income stream with no vacancy deduction mismatches the two sides of the calculation and overstates value. Where current occupancy persistently exceeds the market, that divergence deserves investigation rather than adoption — it may indicate below-market rents or superior management, each of which affects the analysis differently. The distractors substitute a form requirement, an inference, and an unrelated offset.
Background Knowledge
Stabilised income reflects typical long-run performance rather than current conditions. Capitalization rates extracted from sales embed those properties' normal vacancy experience, requiring consistent treatment on the subject.
Real-World Application
An appraiser deducts a 6 percent market loss factor from a fully occupied building, noting the current occupancy and explaining the stabilisation.
More Income Approach Questions
In a percentage lease, rent is commonly structured as:
In a DCF, what is the reversion?
Potential gross income differs from effective gross income in that PGI assumes:
The reversion in a discounted cash flow model represents:
Building A (new, credit tenant, 20-year lease) and Building B (older, month-to-month tenants) sell the same week. Their cap rates should differ how?
An overall rate extracted from a sale whose NOI excluded reserves, applied to a subject NOI that includes them, will:
Replacement reserves cover which kind of expenditure?
What is the primary distinction, for appraisal purposes, between 'vacancy loss' and 'collection loss'?
An appraiser is analyzing a mixed-use property with retail and office components. The retail segment has a potential gross income of $180,000 with a market vacancy of 8%. The office segment has a potential gross income of $120,000 with a market vacancy of 12%. What is the overall effective gross income for the property?
The mortgage constant represents:
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