Turner Auctions + Appraisals was founded by Stephen G. Turner to complement and expand the capabilities of Stephen G. Turner Associates, a San Francisco-based auction and appraisal consulting firm founded in 2004. Turner is a seasoned auctioneer and professional appraiser of personal property with over 30 years' experience working with leading auction houses in North America. His areas of expertise include Fine Art, Decorative Arts, Antiques, and Residential Contents.

Turner has often appeared in the media, including as a regular featured appraiser on HGTV's "Appraise It!" and, for 10 years, in the San Francisco Chronicle's Sunday appraisal feature, "What's It Worth?" He is a popular guest speaker on art and antiques at seminars and appraisal evemts in California. He is also a regular auctioneer in Northern California and makes frequent appearances at Bay Area charity auctions.

Turner adheres to the Uniform Standards of Professional Appraisal Practice (USPAP).