The Appraisal Insti­tute, the nation's largest pro­fes­sion­al asso­ci­a­tion of real estate apprais­ers, today encour­aged home­own­ers to pay close atten­tion to their property's land­scap­ing as it could have a major impact on val­ue. In fact, a well-landscaped home can add approx­i­mate­ly 6 to 13% in val­ue com­pared to a prop­er­ty with no land­scap­ing, accord­ing to one source.