Dekker Appraisal Services is located in Grand Valley. Alinda Dekker, CRA. Real Estate and Equine Appraisals. Member of the Appraisal Institute of Canada and the American Society of Equine Appraisers. When you hire Dekker Appraisal Services for your appraisal assignment you can expect high quality, detailed reports prepared in an efficient, courteous and professional manner. more... See more text