According to the principle of contribution, which scenario best illustrates an improvement that adds less value than it cost to build?
Correct Answer
B) An ADU costing $180,000 increases a property's market value by $120,000 based on comparable sales data
The principle of contribution measures an improvement by what it adds to market value, not by what it cost to build. An ADU that costs $180,000 and, on comparable sales evidence, raises market value by $120,000 contributes $60,000 less than it cost, which is the shortfall the principle warns about. Cost and contribution are independent, so an appraiser tests each improvement against market evidence rather than against the construction invoice.
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More Property Valuation Financial Analysis Questions
Return of an investor’s investment is provided for through:
An appraiser in California is estimating external obsolescence for a residential property adjacent to a state-designated Superfund cleanup site in the San Fernando Valley. The contamination is on the neighboring property, not the subject. The appraiser determines through paired sales that properties near the site sell for 12% less than similar properties further away. In the cost approach, how should this external obsolescence be allocated?
A California buyer purchases a newly built home in a subdivision that has supplemental property taxes. What triggers the supplemental assessment?
A California homeowner's property is reassessed under Proposition 13 after a change of ownership. The new owner's son later inherits the property. Under Proposition 19, what condition must the son meet to avoid full reassessment to market value?
Which of these is a direct building cost?
- → A California home was purchased in 2020 for $750,000. In 2023 the owner completed a permitted ADU, to which the county assessor assigned a base year value of $200,000 on completion. The owner sells in 2026. Under Proposition 13, how is the property assessed immediately before that sale closes?
- → A 6-unit apartment building in San Francisco is subject to rent control. Contract rents total $15,800 per month. The appraiser uses a 3% vacancy and collection loss, annual operating expenses of $72,000, and a 4.5% capitalization rate to reflect rent control risk. What value does the income approach indicate on contract rents?
- → Which valuation method estimates the current cost to build a structure of equivalent utility, deducts accrued depreciation, and adds land value, and is relied on for unique properties when comparable sales are unavailable?
- → Under the replacement cost approach of appraisal, an appraiser is least interested in:
- → A buyer in San Jose purchases a home for $800,000 using a conventional loan with 20% down payment. Under Proposition 13, the base property tax rate is 1% of assessed value, plus a local Mello-Roos assessment of $2,400 per year. What is the buyer's total annual property tax in the first year?
- → A California appraiser is valuing a property that has both an ADU (Accessory Dwelling Unit) and a JADU (Junior Accessory Dwelling Unit) built under California's recent ADU legislation. Using the cost approach, how should the appraiser handle these additional units?
- → When conducting a sales comparison analysis in California, an appraiser discovers that the subject property has an Accessory Dwelling Unit (ADU) that was built under California's recent ADU legislation. How should the appraiser handle this feature?
- → A California appraiser is using the income approach for a rental property and must determine whether to include ADU (Accessory Dwelling Unit) rental income. The property has a legally permitted ADU that rents for $1,500/month. How should the appraiser treat this ADU income?
- → A California couple, both over 55 and neither having used a base year value transfer before, own two properties: their primary residence (assessed at $300,000, market value $900,000) and a vacation home (assessed at $200,000, market value $600,000). They want to sell both and buy a single new home for $1,200,000 using Proposition 19's base year value transfer. Under Prop 19, what is allowed?
- → Which of the following is the least important factor used to determine the market value of a property?
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