We are committed to providing our clients with exceptional service

Our Story

Stenger Bischoff  is one of the leading independent appraisal and advisory firms for the fine and decorative arts industry. We provide a full-range of professional valuation, consulting and collection management services tailored to meet the needs of both private and corporate collectors, institutions and non-profits.

Whether appraisals are needed for probate, family division, fair market or insurance purposes, we can provide specialists to efficiently evaluate a single item, special collections or an entire estate. Our appraisals comply with the Uniform Standards of Professional Appraisal Practice (USPAP). 

Stenger Bischoff  has been called upon by attorneys, trustees, banks, real estate agents, accountants, personal representatives, and business owners to help them navigate through the difficult decisions they are faced with.  We believe communication is the key to exceed your goals and expectations.  Through our professional evaluations, we can determine the best possible method to sell your personal property. 

Call Us: (303) 548-8614

Call Us: (414) 588-3188

Get in touch

We know that finding the right appraiser or advisor to represent you is a choice not to be taken lightly. That’s why we offer a consultation to walk you through your needs, the scope of your goals, and your budget.

Our Team

Stenger Bischoff’s team is uniquely qualified by virtue of their education, experience, and professional accomplishments.  We follow the Uniform Standards of Professional Appraisal Practice (USPAP) and hold memberships in the Rocky Mountain Estate Planning Council and Milwaukee Estate Planning Forum.  Our specialists are carefully chosen for their knowledge, expertise, and professionalism, each recognized experts in their collecting area.


Timothy Stenger

Partner, Senior Appraiser

Timothy provides a full service personal property appraisal business offering USPAP self-contained, certified appraisals for the purposes of insurance, estate taxes and planning or consideration of the sale of your collection. All appraisals follow strict guidelines as required by insurance and financial companies, as well as the IRS and determined by the Uniform Standard of Professional Appraisal Practice (USPAP). In addition, Tim also brings more than 25 years of experience in advising clients in the purchase or sale of fine and decorative art whether for investment or as part of your active role as a collector.

Timothy has worked for some of the nation’s top auction houses including Sotheby’s, Hindman Auctioneers, LLC, Cowan's and EBTH (Everything But The House).  He has participated in multiple Appraisal Events providing appraisals as part of fundraisers for the Friends Foundation in conjunction with the Denver Public Library on behalf of Caring Transitions. For the past five years, Tim has also provided appraisals for the annual Colorado Collectibles event aired by Colorado Public Television. He has completed over $175 M in appraisals for private and corporate clients as well as financial institutions.

  • Master’s Degree Program in Art History, Denver University
  • Former Colorado Registered Investment Advisor, 1994-2009
  • Degree in Appraisal Studies, New York University
  • USPAP Certified

William Bischoff

Partner, Business Development

William oversees business development of appraisals and advisory for Trusts and Estates. This includes establishing, developing, and maintaining business relationships with professionals in the trust and estate community, including attorneys, trust officers, wealth managers, accountants and realtors in order to provide necessary appraisal and sale advisory services for all types of fine art, decorative art, jewelry and collectibles.

William guides all aspects of the business development and marketing strategies for Stenger Bischoff. He works closely with Timothy to build relationships and pursue new business and assists with estate inquiry assessments/evaluations where required.

  • Bachelor of Science in Economics, University of Wisconsin-Whitewater
Scroll to Top