A neighborhood has 450 existing homes with an annual absorption rate of 36 homes per year. If 180 new homes are planned for development, what is the estimated absorption period for the new inventory?
Correct Answer
B) 5.0 years
Why this is correct: Absorption period for new inventory = New inventory ÷ Annual absorption rate = 180 homes ÷ 36 homes/year = 5.0 years. The existing inventory of 450 homes is irrelevant to this calculation. Why the other choices are wrong: 7.5 years incorrectly includes existing inventory (180 ÷ (36/450?)). 12.5 years is a miscalculation. 3.5 years is incorrect. Exam tip: Absorption period for new supply = New units ÷ Absorption rate.
Why This Is the Correct Answer
Option B is correct because the absorption period formula is straightforward: New Inventory ÷ Annual Absorption Rate = Absorption Period. With 180 new homes planned and an annual absorption rate of 36 homes per year, the calculation is 180 ÷ 36 = 5.0 years. The existing inventory of 450 homes is irrelevant to this specific calculation since we're only determining how long the new development will take to absorb. This represents the time needed for the market to absorb the additional supply at the current rate.
Why the Other Options Are Wrong
Option A: 7.5 years
Option A incorrectly calculates the absorption period, possibly by using wrong numbers in the formula or making an arithmetic error in the division.
Option C: 12.5 years
Option C appears to incorrectly include some consideration of existing inventory or uses an improper calculation method, resulting in an inflated timeframe.
Option D: 3.5 years
Option D significantly overestimates the absorption period, likely by incorrectly incorporating the existing inventory of 450 homes into the calculation when only new inventory should be considered.
NEW over RATE
Remember 'NEW over RATE' - New inventory goes on top, absorption Rate goes on bottom. Think of it as a fraction: NEW/RATE = TIME.
How to use: When you see an absorption period question, immediately identify the NEW inventory amount and put it over the absorption RATE. Ignore existing inventory - focus only on what's NEW.
Exam Tip
Always identify what inventory is being absorbed (new vs. existing) and don't let large numbers like existing inventory distract you from the simple division required.
Common Mistakes to Avoid
- -Including existing inventory in the calculation
- -Confusing absorption rate with absorption period
- -Using the wrong numbers in the numerator or denominator
Concept Deep Dive
Analysis
This question tests the fundamental concept of absorption period calculation in real estate market analysis. Absorption period measures how long it will take for new inventory to be sold or leased at the current market rate. The calculation requires identifying the relevant new inventory and dividing it by the established absorption rate. Understanding this concept is crucial for appraisers when analyzing market conditions and estimating how quickly new developments will be absorbed by the market.
Background Knowledge
Absorption rate represents the rate at which available homes are sold in a specific market during a given time period, typically expressed annually. Absorption period specifically measures how long it takes for new inventory to be absorbed by the market at the current absorption rate.
Real-World Application
Appraisers use absorption period analysis when evaluating new subdivisions or condo developments to advise developers on realistic sales timelines and to help lenders assess project feasibility and loan risk.
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