Combining two adjacent lots creates a site worth more than the pair separately. The increment is called:
Correct Answer
B) Plottage value from assemblage
Why this is correct: Plottage value is the incremental value created by combining two or more contiguous lots into a single, more useful site through assemblage. The whole becomes more valuable than the sum of its parts. Why the other choices are wrong: 'Progression from proximity' is wrong; progression is the principle that a lower-value property benefits from being near higher-value properties. 'Surplus productivity of land' is wrong; this is the residual income attributable to land after other factors are paid. 'Marginal utility of scale' is wrong; this is not a standard appraisal principle. Exam tip: Assemblage is the act of combining lots. Plottage is the value increment created by that act.
Why This Is the Correct Answer
Plottage value from assemblage names both the act and the resulting increment in the standard terminology, which is exactly what the stem describes. The appraiser measures it by valuing the assembled site under its own highest and best use and comparing that with the aggregate value of the parcels held separately, with the difference being the plottage increment. Supporting it requires market evidence, typically sales of comparably assembled sites or paired evidence showing what developers pay for the added density. Documenting that support matters because plottage is a claim about a value that does not exist until the combination does.
Why the Other Options Are Wrong
Option A: Progression from proximity
Progression describes the effect of higher-value surrounding properties on a lower-value property, so it is about the influence of neighbors on a single parcel rather than about merging parcels. Its companion principle is regression, where a higher-value property is dragged down by lesser surroundings, and neither involves a change in the size or configuration of the site.
Option C: Surplus productivity of land
Surplus productivity is the residual income attributable to land after the costs of labor, capital, and coordination have been satisfied, and it is the classical explanation of why land has value at all. It concerns the allocation of income among the agents of production, not the value effect of combining adjacent parcels.
Option D: Marginal utility of scale
Marginal utility of scale is not a term in the appraisal vocabulary; it blends marginal utility, an economic concept about incremental satisfaction, with economies of scale from production theory. Encountering a plausible-sounding phrase that is not a recognized principle is itself the signal that the option is a distractor.
Assemble the Act, Plot the Profit
Assemblage is the verb, the act of putting lots together. Plottage is the noun, the extra value that shows up afterward. Verb first, profit second, and only if the combination actually buys you something.
How to use: When a stem describes combining parcels and asks for the increment, choose plottage. If it describes the combining itself, the term is assemblage. If nothing is being combined, neither term applies.
Exam Tip
Terminology items often pair a real principle with a fabricated but plausible one, so trust the terms you can define and be suspicious of phrases you have never seen in a text.
Common Mistakes to Avoid
- -Assuming assemblage always creates plottage without testing whether a new use becomes possible
- -Asserting a plottage increment with no market evidence behind it
- -Confusing plottage with progression or with economies of scale in construction
- -Overlooking that parcels must be contiguous and capable of unified use for assemblage to apply
Concept Deep Dive
Analysis
This tests two paired terms that candidates routinely swap. Assemblage is the act of combining two or more contiguous parcels under one ownership; plottage is the increment of value that the combination creates when the assembled site is worth more than the sum of the individual parcels. The increment is not automatic, and that is the analytical heart of the concept: it exists only when the combined parcel enables a use or a density that neither parcel could support alone, so plottage is really a highest and best use finding expressed in dollars. A pair of small lots in a district requiring a large minimum lot area for the desired use is the classic case, since only the combined site clears the threshold. When the combination unlocks nothing, the assembled value is simply the sum of the parts and there is no plottage.
Background Knowledge
You need to know the definitions of assemblage and plottage and the requirement that the increment be supported by an actual change in highest and best use or in achievable density. You should also be able to distinguish plottage from progression and regression, which describe external influences on value rather than the effect of combining parcels.
Real-World Application
Two adjacent forty-foot lots each support a single house, but the zoning ordinance permits a small apartment building on any site of at least seventy-five feet of frontage. Combined, the eighty-foot site clears the threshold, and you find three recent sales of similarly assembled sites selling well above twice the price of comparable single lots. You value the assembled site under its apartment highest and best use and report the plottage increment with that market support.
More Market Questions
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In the neighborhood life cycle, what characterizes the decline stage?
In which phase of the real estate cycle do rising vacancies first meet a still-growing construction pipeline?
The principle of consistent use prohibits:
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Frictional vacancy in a rental market refers to:
The principle of opportunity cost applied to real estate means:
A neighborhood with a wide range of property values requires the appraiser to:
In-migration to a metro area increases housing demand primarily by:
Absorption rate expressed in units per month is calculated by:
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