An appraisal is a professional appraiser's opinion of value. The preparation of an appraisal involves research into appropriate market areas; the assembly and analysis of information pertinent to a property; and the knowledge, experience and professional judgment of the appraiser. The role of the appraiser is to provide objective, impartial and unbiased opinions about the value of real property - providing assistance to those who own, manage, sell, invest in and/or lend money on the security of real estate.

A written appraisal report generally consists of: a description of the property and its locale; an analysis of the "highest and best use" of the property; an analysis of sales of comparable properties "as near the subject property as possible"; and information regarding current real estate activity and/or market area trends. The value indicated by recent sales of comparable properties, the current cost of reproducing or replacing a building, and the value that the property's net earning power will support are the most important considerations in the valuation of real property.

The Inspection

An appraiser's duty is to inspect the property being appraised to ascertain the true status of that property. He or she must actually see features, such as the number of bedrooms, bathrooms, the location, and so on, to ensure that they really exist and are in the condition a reasonable buyer would expect them to be. The inspection often includes a sketch of the property, ensuring the proper square footage and conveying the layout of the property. Most importantly, the appraiser looks for any obvious features - or defects - that would affect the value of the house.

Once the site has been inspected, an appraiser uses two or three approaches to determining the value of real property: a cost approach, a sales comparison and, in the case of a rental property, an income approach.

Cost Approach

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

Instead, appraisers rely on the sales comparison approach to value these types of items. Appraisers get to know the neighborhoods in which they work. They understand the value of certain features to the residents of that area. They know the traffic patterns, the school zones, 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.

Using knowledge of the value of certain items such as square footage, extra bathrooms, hardwood floors, fireplaces or view lots (just to name a few), the appraiser adjusts the comparable properties to more accurately portray the subject property. 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.

Reconciliation

Combining the information from all approaches, the appraiser is then ready to stipulate an estimated market value for the subject property. 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 than 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.