JSO Valuation Group, Ltd. was founded in 1989, as an independent fee appraisal firm. Appraisal assignments have also included properties in the States of Illinois, Michigan, Wisconsin, Indiana, Kansas, Florida, Colorado, South Dakota, Minnesota, Maryland, Washington DC, and Georgia, to mention a few. With a staff of eleven people, the form specializes in blanket loans for Co-operative Housing throughout the country. Real Estate Investment Trust annual analysis and valuations. Cook County Tax Appeal valuations of all types of properties.