Aside from the typical things that affect a home’s value like the neighborhood, the market, and the size, appraisals also take into account the condition of the house and some other unique factors. If there are several homes that have foreclosed in your neighborhood, that can lower your property value. Nuisance neighbors, neighbors with unkempt yards, and businesses that can cause disturbances, like power plants and factories, can lower your home value as well.
Among things that you can control, peeling paint, poor landscaping, too much “quirks” or unique personal touches on the property, extensive carpeting, or any upgrades that weren’t up to code affect your property value.