About Us

Mary McMahon
As founding partner of McMahon’s of Winnetka, Mary has set the highest standard for estate sale services on the North Shore and in greater Chicago for nearly thirty years.

Mary has overseen hundreds of conducted sales, drawing on her wealth of experience to provide clients with the unique perspective, clear insight and responsiveness which have become the hallmark of her company.

Mary Beth McMahon
Since joining McMahon’s of Winnetka in 1994, Mary Beth has become an accredited member of the International Society of Appraisers, specializing in antiques and residential contents.

As head of appraisal services and research for McMahon’s of Winnetka, Mary Beth maintains a strong awareness of current market trends, utilizing the very latest investigative tools and techniques to establish accurate values for personal property.

This mother and daughter team, together with a conscientious and committed staff, provides exceptional service, making McMahon’s of Winnetka one of the most sought after estate sale companies in the region.