Real estate appraisers use different methods to determine property value depending on the property, available market data, and purpose of the appraisal. While most homeowners are familiar with comparable sales, that is only one way an appraiser can analyze value.
The three primary approaches to real estate valuation are the sales comparison approach, cost approach, and income approach. Each considers value from a different perspective: what comparable properties have sold for, what it would cost to reproduce or replace the improvements, or how much income the property can generate.
Key Takeaways
- The three approaches to value are the sales comparison approach, cost approach, and income approach.
- The sales comparison approach compares a property with relevant sales and is commonly emphasized for single-family homes.
- The cost approach considers land value plus the cost of the improvements, less applicable depreciation.
- The income approach analyzes a property’s income-producing potential and is commonly used for investment properties.
- Not every appraisal requires all three approaches. The appraiser determines which approaches are applicable and reconciles the relevant indications of value.
What Is the Sales Comparison Approach?
The sales comparison approach estimates property value by comparing the subject property with similar properties that have sold in the relevant market.
The appraiser researches comparable sales and analyzes differences between those properties and the subject. Depending on the market and property, relevant differences may include:
- Living area
- Lot size
- Condition and quality
- Number of bedrooms and bathrooms
- Garage or parking
- Renovations and improvements
- Location
- Views
- Site characteristics
- Other features buyers recognize in the market
The appraiser analyzes these differences and makes market-supported adjustments when appropriate. The resulting indications help the appraiser develop a supported opinion of value.
For many owner-occupied single-family homes, the sales comparison approach is particularly relevant because buyers commonly compare available homes with similar properties that have recently sold.
What Is the Cost Approach?
The cost approach estimates value by considering the value of the land and the current cost to construct the improvements, less applicable depreciation.
In simplified terms, the appraiser considers:
Land Value + Cost of Improvements − Depreciation = Indicated Property Value
The cost approach reflects the economic principle of substitution: a buyer generally would not pay substantially more for an existing property than the cost of acquiring a comparable site and constructing an equivalent property, assuming there are no significant delays or other disadvantages.
Depreciation can include physical deterioration as well as functional and external obsolescence.
The cost approach can be particularly useful for:
- New construction
- Relatively new homes
- Custom properties
- Properties with limited comparable sales
- Certain special-use or unusual properties
The approach may receive less emphasis for older properties when estimating accrued depreciation becomes more difficult or when market participants primarily rely on comparable sales.
What Is the Income Approach?
The income approach estimates property value based on the income-producing characteristics of the real estate.
This approach is particularly relevant when buyers purchase properties primarily for the income and investment returns they can generate.
Depending on the property and assignment, an appraiser may analyze rental income, vacancy, operating expenses, net operating income, capitalization rates, and other market-supported investment factors.
The income approach is commonly relevant to properties such as:
- Apartment buildings
- Rental properties
- Office properties
- Retail properties
- Industrial properties
- Other income-producing real estate
For some residential properties, an appraiser may use techniques such as a gross rent multiplier when sufficient rental market data is available.
The income approach generally receives less emphasis for owner-occupied single-family homes when typical buyers are purchasing them primarily as residences rather than for their income-producing potential.
How Does an Appraiser Choose Which Method to Use?
The appraiser determines which approaches to value are applicable based on the property, assignment, intended use, and available market data.
Not every appraisal requires all three approaches.
For example, the sales comparison approach may receive the greatest emphasis for a typical suburban single-family home with abundant comparable sales. A new custom home may lend itself to both the sales comparison and cost approaches. An income-producing property may require greater consideration of the income approach because investors evaluate the property’s ability to generate returns.
The appraiser must determine which approaches are relevant rather than automatically applying all three.
How Does an Appraiser Combine the Approaches?
When multiple approaches are developed, the appraiser reconciles the different indications of value into a final opinion.
Reconciliation does not necessarily mean averaging the results.
Instead, the appraiser considers the quality and quantity of the available data, the reliability of each analysis, the property’s characteristics, and how buyers and sellers in that particular market typically make decisions.
One approach may therefore receive considerably more weight than another.
The final opinion of value should reflect the appraiser’s analysis of the most relevant and reliable market evidence for the specific assignment.
Which Appraisal Method Is Most Common for Homes?
The sales comparison approach is commonly the most relevant approach for existing single-family homes.
Homebuyers typically compare properties based on recent sales of similar homes, making comparable-sale data particularly useful for residential valuation. The appraiser can analyze how the market responds to differences in size, condition, location, quality, improvements, and other characteristics.
However, the appropriate methodology depends on the individual property. New construction, rental properties, unusual homes, and properties with limited comparable sales may require consideration of additional approaches.
Need a Professional Property Appraisal?
Scientific Valuation, Inc. provides independent, data-driven real estate appraisals for homeowners, attorneys, lenders, investors, and other professionals.
Led by Certified Appraiser Clay Edwards, we select and apply the valuation approaches appropriate to the property and assignment, analyze relevant market evidence, and provide a supported opinion of value.
Whether you need an appraisal for a home, new construction, estate, divorce, refinance, tax matter, investment decision, or another property-related purpose, we can help you determine the appropriate appraisal service.
Frequently Asked Questions
What Are the Three Appraisal Methods?
The three primary approaches to real estate valuation are the sales comparison approach, cost approach, and income approach. Each analyzes value differently, and an appraiser determines which approaches are applicable to the specific assignment.
Which Appraisal Method Is Used for a House?
The sales comparison approach is commonly emphasized for existing single-family homes because buyers typically compare a property with similar homes that have recently sold. Other approaches may also be relevant depending on the property and assignment.
When Is the Cost Approach Used?
The cost approach can be particularly useful for new or relatively new construction, custom properties, and certain unusual properties. It considers land value and the cost of the improvements, less applicable depreciation.
When Is the Income Approach Used?
The income approach is used when a property’s income-producing ability is relevant to how market participants determine its value. It is commonly applied to apartment buildings, rentals, and commercial investment properties.
Does an Appraiser Always Use All Three Approaches?
No. The appraiser determines which approaches are applicable based on the property, intended use, available market data, and requirements of the assignment. When multiple approaches are developed, the appraiser reconciles their indications rather than simply averaging them.