A site contains 40,000 square feet and the building covers 10,000 square feet. What is the land-to-building ratio?
Correct Answer
C) 4 to 1
Why this is correct: The land-to-building ratio is calculated as (Land Area) : (Building Area). Here, 40,000 sq ft (land) to 10,000 sq ft (building). Simplify by dividing both by 10,000, resulting in a 4:1 ratio. Why the other choices are wrong: 1 to 4 reverses the ratio (building to land). 3 to 1 and 1 to 3 are incorrect results from misdividing or misinterpreting the numbers. Exam tip: Ratio = Land Area / Building Area. A high ratio (e.g., 4:1) suggests the building is small relative to the land, which could indicate under-improvement or surplus land.
Why This Is the Correct Answer
Option C is correct because 40,000 divided by 10,000 equals 4, so the land-to-building ratio is 4 to 1. The name of the ratio dictates the order, with land first and building second. Reducing by the common factor of 10,000 makes the relationship easy to read: four square feet of land for every square foot of building. A ratio of this size in a market where comparables run closer to 2 to 1 would prompt a look at whether the site holds excess land.
Why the Other Options Are Wrong
Option A: 1 to 4
1 to 4 reverses the terms and states a building-to-land relationship, describing a site four times covered by its building, which is physically impossible for a single-story footprint. The ratio's name fixes the order, and reading it aloud as land to building prevents the inversion. This is the most frequently chosen wrong answer on ratio questions.
Option B: 3 to 1
3 to 1 would require 30,000 square feet of land against a 10,000 square foot building, which does not match the figures given. It may come from subtracting the building area from the site area to get 30,000 square feet of open land and comparing that with the building. The ratio uses total site area, not the uncovered remainder.
Option D: 1 to 3
1 to 3 compounds two errors, using the open area rather than the total site and then reversing the order. Neither the numbers nor the sequence corresponds to the definition. Computing the quotient first and then labeling which term comes first avoids both mistakes.
Read the name, get the order
Land-to-building means land first. The ratio's own name is the instruction: whatever is named first goes on top. Floor area ratio names the floor area first, so it flips.
How to use: Write the two areas as a fraction in the order the term names them, divide, then reduce. Say the result aloud as so many square feet of land for each square foot of building to confirm it makes physical sense.
Exam Tip
Sanity-check by physical possibility. Any land-to-building ratio below 1 to 1 would mean the building covers more area than the site, which cannot happen with a single-story footprint.
Common Mistakes to Avoid
- -Reversing the order of the terms
- -Using open land area instead of total site area
- -Confusing land-to-building ratio with floor area ratio
- -Comparing ratios across property types where typical utilization differs
Concept Deep Dive
Analysis
This tests the land-to-building ratio, a simple measure of site utilization that appraisers use to screen comparability and to spot excess land. The ratio expresses land area relative to building area, in that order, so it is computed by dividing site area by building footprint or building area and reducing the result. Here 40,000 square feet of land over 10,000 square feet of building gives 4, expressed as 4 to 1. The order of the terms carries the meaning, which is why reversing them changes the statement entirely. Typical ratios vary widely by property type and location, running low for dense urban buildings and high for suburban properties with surface parking, and a ratio far outside the range for comparable properties is a signal to investigate. That signal often points to excess or surplus land, or to an underimprovement of the site.
Background Knowledge
You need the definition of the land-to-building ratio and its relationship to floor area ratio, which instead compares gross building area to site area and is used in zoning to cap development intensity. You should also know that typical ratios differ by property type and market, and that an unusually high ratio may indicate excess land, surplus land, or an underimproved site.
Real-World Application
A retail building on a large parcel shows a land-to-building ratio of 6 to 1 while comparable sales cluster near 3 to 1. You investigate, find the rear half of the site could be split off and sold separately, and value that portion as excess land at its own highest and best use.
More Land/Site Questions
Under which condition is the land residual technique most applicable?
Why can the same physical parcel carry different values in two assignments?
In a built-up area where no vacant land has sold for years, which approach to site value is the usual fallback?
How is entrepreneurial profit treated in the subdivision development method?
A land comparable sold 18 months ago in a market rising about 4 percent a year. What adjustment direction applies?
Why does a developer's required profit rise for a longer subdivision project?
How does holding cost enter the valuation of land bought for future development?
Excess land is best described as land that has which characteristic?
Plottage value arises in which of the following situations?
Which of the following is an off-site improvement rather than a site improvement?
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