Herron Companies performed its first car wash appraisal in 1986. Since then we have appraised hundreds of washes. Today, we are recognized as one of the nation's premier appraisal companies specializing in the car wash industry. We are aware of no other appraisal company that has valued more car washes. Don't become another appraiser's guinea pig for learning this industry. trust Herron Companies; we really understand car washes.