What is the principal limitation of the land residual technique?
Correct Answer
C) Small errors in the inputs move the residual a lot
Income land residual divides NOI remaining after the building’s required income by a land capitalization rate. Because it subtracts potentially large component amounts and then capitalizes the remainder, errors in NOI, building value or rates can materially change indicated land value. Reliability depends on support for all those inputs.
Why This Is the Correct Answer
Option C is correct because the land residual technique subtracts the building's income requirement from NOI and capitalizes the remainder at a land rate. Since the residual is often small relative to the amounts subtracted, small errors in NOI, building value or capitalization rates can materially change the indicated land value.
Why the Other Options Are Wrong
Option A: It cannot be applied to income-producing property
Option A says the technique cannot be applied to income-producing property. It is in fact an income technique that requires income-producing property, so this statement is backwards.
Option B: It requires sales of comparable vacant parcels
Option B says the technique requires sales of comparable vacant parcels. It works from income and component values, which is why it is used when vacant sales are scarce.
Option D: It may only be used where a ground lease exists
Option D says it may only be used where a ground lease exists. The technique allocates income between land and building and does not depend on a ground lease; capitalizing ground rent is a different method.
Small leftover, big swings
When land value is a small leftover from large numbers, a little error in any input becomes a large error in the answer.
How to use: Use this to recall why residual techniques are sensitive and need well-supported inputs.
Exam Tip
Limitations of residual techniques usually relate to sensitivity to inputs, not to property type or lease requirements.
Common Mistakes to Avoid
- -Thinking the technique needs vacant land sales
- -Believing it applies only to ground-leased property
- -Overlooking its sensitivity to capitalization rates and NOI
Concept Deep Dive
Analysis
This question tests the main weakness of the land residual technique. Because land value comes from a small residual after subtracting a large building income allocation, then capitalizing it, small input errors can cause large swings. Reliability depends on strong support for NOI, building value and rates.
Background Knowledge
Residual techniques isolate one component's value by deducting the income attributable to the known component. Because the result is a remainder, it magnifies any error in the inputs, so the technique is often used as support rather than as a primary indicator.
Real-World Application
An appraiser runs a land residual analysis for a new office building and finds that changing the building capitalization rate by half a point shifts the land indication sharply. The appraiser gives the result limited weight and relies more on available land sales.
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Market data show land prices rising at a straight-line rate of about 4% per year, without compounding. A comparable land sale closed 18 months before the effective date of the appraisal. What market-conditions adjustment is indicated for this sale?