The Appraisal Institute, the nation’s largest professional association of real estate appraisers, cautioned homeowners and potential homebuyers that bad neighbors can significantly reduce nearby property values. Bad neighbors can include homeowners with annoying pets, unkempt yards, unpleasant odors, loud music, dangerous trees and limbs or poorly maintained exteriors. A homeowner or prospective homebuyer should visit a street on several days at various times to learn more about what is happening in the neighborhood. A home’s proximity to a bad neighbor also can impact the rate of potential decline in value.