How does a real estate appraisal work?

The appraiser can use any or all of the 3 approaches to value.

Cost Approach
The cost approach is the easiest to understand. The appraiser uses information on local building costs, labor rates and other factors to determine how much it would cost to construct a property similar to the one being appraised. This value often sets the upper limit on what a property would sell for. Why would you pay more for an existing property if you could spend less and build a brand new home instead? While there may be mitigating factors, such as location and amenities, these are usually not reflected in the cost approach.

Sales Comparison
Mitigating factors are taken into account in the sales comparison approach. Appraisers evaluate the location of the property. They take into account the value of certain features to the residents of that area. They know the traffic patterns, the school zones, and the busy throughways, and they use this information to determine which attributes of a property will make a difference in the value. Then, the appraiser researches recent sales in the vicinity and finds properties which are ”comparable” to the subject being appraised. The sales prices of these properties are used as a basis to begin the sales comparison approach.

These are then adjusted to reflect value to the potential buyer. For example, if the comparable property has a fireplace and the subject does not, the appraiser may deduct the value of a fireplace from the sales price of the comparable home. If the subject property has an extra half-bathroom and the comparable does not, the appraiser might add a certain amount to the comparable property.

Income Approach
In the case of income producing properties – rental houses for example – the appraiser may use a third approach to valuing the property. In this case, the amount of income the property produces is used to arrive at the current value of those revenues over the foreseeable future.

Reconciliation
Considering information from all 3 approaches, the appraiser decides which approach or approaches would give the client the most valid idea of market value. It is important to note that while this amount is probably the best indication of what a property is worth, it may not be the final sales price. There are always mitigating factors such as seller motivation, urgency or ”bidding wars” that may adjust the final price up or down. But the appraised value is often used as a guideline for lenders who don’t want to loan a buyer more money that the property is actually worth. The bottom line is: an appraiser will help you get the most accurate property value, so you can make the most informed real estate decisions.