So what are comps and how are they used. Appraisers have strict requirements for comparable sales that they must conform to as much as they can. Comparables should be in the same location as the subject property, they should have the same quality, design, same amount of bedrooms , bathrooms and square footage, be the same age in a perfect world the properties would be identical, but they rarely are, the best we can hope for is similar. However there are certain catgergories that are immutable, for expample you would not compare a waterfront property to a property that has no waterfront, or a stick built home to a manufactured home. Some crieteir are more important than others.
When the location, size, condition or features are different we use the sales comparison model to reconcile the price, adjusting a mostly fixed amount for differences, for example we adjust $5 / square foot for properties that are with 20% of each other in gross living area (that includes all finished living area).
We always adjust the price of the subject property because that is what we are solving for. Pricing adjustments reconcile the price to the subject property. A good comp with have fewer adjustments, while a less similar comp will need more adjustments.
I’n general we want at least three sold comps ( within 90 days ) and three listed comps that are in direct competition with the subject property. There should be one comp that is inferior to the subject one that is superior and one that is equal. This is important to bracket the price.
This doesn’t always happen, and in some markets ‘I perform in it is rare to find comps that meet all the criteria, thats where local expertise comes in. If we cannot bracket the subject property in the area we havre to expand to adjoining areas that are similar, even if they are further away.
Real estate agents use a fixed scale of comp evaluation that depends on the agent – most agents use a simple, superior inferior or equal designation to determine the quality of the feature of the comp. For example the subject property is beautifully landscaped with excellent curb appeal while a comp has no landscaping , or is poorly maintained, in this example we would say that the comp is infer in landscaping, curb appeal or site value.
Appraisers use more specific gradientions to describe the subject and comps. You don’t need to know all these but the idea is helpful to understanding appraisals [https://en.wikipedia.org/wiki/Uniform\_Standards\_of\_Professional\_Appraisal\_Practice](https://en.wikipedia.org/wiki/Uniform_Standards_of_Professional_Appraisal_Practice), if in the case of an appraisal not meeting the sales price it is good to have a understanding of the language of appraisers in order to work with the appraiser to establish the value for the sale of the home.
The purpose of the appraisal affects the value assigned to the subject property. Seams counterintuitive, appraisals are to establish an idea of nom biased market value. Not necessarily, appraisals are mostly done by banks to make sure that they the property is worth what they are lending on it.