The Sales Comparison Approach is one of the most widely used methods for property valuation, particularly effective for appraising single-family homes also known as detached units and vacant land. Often called the “market data approach,” this method estimates property value by comparing it to similar properties, or “comparable,” that have recently sold in the area. According to the International Valuation Standards(IVS) the underlying principle is that the value of a property should reflect the market value of comparable properties sold under similar conditions.
To ensure a valid comparison, appraisers select at least three to four comparable that meet specific criteria. These comparable properties must be as similar as possible to the property being appraised, should have been sold within the past year, and represent sales conducted under typical market conditions (not under duress). This approach is highly dependent on the availability of accurate and up-to-date market data, making it particularly useful in active, stable markets where recent comparable sales are readily available.
Adjustments are a crucial component of the Sales Comparison Approach. Since no two properties are exactly alike, appraisers adjust to account for any differences that could affect market value. Adjustments may include factors like the age and condition of the building, lot size, location, number of rooms, amenities (such as a pool or garage), and other physical or functional features. For instance, a property with an upgraded kitchen may be valued higher than a comparable without this feature, leading to an upward adjustment in its comparable sales price.
After making the necessary adjustments, the adjusted sales prices of the comparable form a value range. The appraiser’s judgment plays a role in weighing comparable, giving more consideration to those with fewer adjustments needed to align with the subject property. This results in a refined, reliable estimate of the property’s market value based on actual market behaviour and comparable sales. The Sales Comparison Approach remains popular due to its intuitive nature, as it reflects what informed buyers are willing to pay in the current market for similar properties.
