Meet Katherine Yellen

Connecticut & Westchester Counties

All appraisals are USPAP compliant and written in conformity to USPAP rules.

Certified Member of the International Society of Appraisers

Certified Member of the American Association of Appraisers

Phone: 203-438-9228

Katherine Yellen is a certified member of both the International Society of Appraisers (ISA) and the American Association of Appraisers (AAA). She has been appraising antiques and fine art since 1999 for insurance, estates, donations, equitable distributions, damage/loss and corporate collections. Her clients include individual collectors, major corporations such as Pepsi and Nationwide Bank as well as accountants, lawyers, insurance adjusters and insurance agents.

Katherine studied in England and received a Diploma in Antiques and Decorative Arts from the Regent Academy of Fine Arts in London and subsequently attended New York University to complete her Certificate for Appraisal Studies in Fine and Decorative Arts. She continues to take specialist courses and regularly attends appraisal conferences to further her education and stay current on the latest developments and regulations.

Appraisal Services

Katherine has done thousands of appraisals over the years which have included a broad spectrum of antiques, fine art, silver, oriental rugs and ceramics. Katherine subscribes to several auction databases and attends local auctions in order to have the most up-to-date values on everything from expensive paintings and antiques to regular household items.   She attends courses on an annual basis to keep informed about current market conditions and trends and to improve on her knowledge of specialty items such as oriental rugs, Chinese Antiques, American Art, 18th Century Mid-Atlantic Furniture, Northeast Coastal Furniture, Antique Clocks, 19th Century European Art and 18th and 19th Century Silver.


Katherine Yellen ISA CAPP, AAA

Certified Member, International Society of Appraisers

Certified Member, Appraisers Association of America

USPAP Compliant through December 2020

Appraisal Experience:

As a generalist I appraise fine art, antiques and household contents.   I also hold a certification specialty from AAA in Silver.  I continually build on my appraisal experience and education by attending conferences, classes, and auctions.  My initial experience in this field began when I lived in England where I completed a Diploma Course from the Royal Academy of Fine Arts.  After my return to the United States I began working with a local appraiser completing estate, insurance and donation appraisals specifically dealing with English antiques, fine art and silver.  For the last 20 years, I have been involved in my own appraisal practice. My clients include insurance agents, lawyers, and accountants from Connecticut and Westchester County.

Appraisal Specializations: Silver, AAA, Household Contents, AAA, Antiques, Furnishings and Decorative Arts, ISA CAPP, Fine Art, ISA CAPP          

Professional Education: 

  • Appraising in the World of High-Net-Worth Individuals, focusing on estate planning, working with family offices and community foundations, preparing insurance appraisals and leveraging high end collections, 7/13/2018 – 7/14/2018.

  • Print Media, A Study Day, AAA, recognizing and properly identifying print making techniques and learning about fakes and forgeries in the print world, 10/27/2017.

  • South Asian Fine Art: Modern and Contemporary, focused on connoisseurship and market value information, 3/9/2017

  • Oriental Rug Course, identification and valuation methodology, 11/10/2016 - 11/11/2016.

  • Professional Seminar on Estate Planning and Changes in Federal and State Tax and Trust law provided by Cummings & Lockwood, 12/2/2015.

  • 20th Annual American Art Conference, Insight and Inclusion: Expanding Visions of American Art, 5/15/2015 - 5/17/2015.

  • American Art and the New Deal: Appraising American Paintings, Sculpture and Photography of the 1930's, 1/16/2015.

  • Photography Study Day, 4/2/2013

  • 19th Century European Art AAA course including Christie's preview and discussion with expert, restoration consultation and frame identification at Eli Wilner’s gallery, 4/4/2008.

  • NYU Coursework on Fine Oriental Rugs, 2002.

  • Winterthur Study Trip, 18th Century Mid-Atlantic Furniture, Portraits & Works on Paper, including Regional Characteristics of New York & Philadelphia Queen Anne and Chippendale Furniture, Long Island & Southeastern Pennsylvania Furniture, Mid Atlantic 18th and 19th Century Painting and Works on Paper, 8/13/2007 - 8/15/2007.

  • NAWCC, National Association of Watch and Clock Collectors Coursework, 10/13/2009 - 10/17/2009.

  • Winterthur Furniture Forum, Northeast Coastal Furniture, including Rhode Island and Connecticut Furniture makers, 4/16/2009 - 4/17/2009.

  • New York University Silver Conference, a survey of over 225 years of American silver from the Colonial period to the mid 20th century, 3/16/2000 - 3/18/2000.

  • ISA Fine Art Specialty Course, focusing on art history and identifying and researching fine art works, 10/2/2004 - 10/7/2004.

  • ISA Antiques and Residential Contents Specialty Course, 9/13/2003 - 9/18/2003.

  • New York University Certificate Appraisal Studies in Fine and Decorative Arts, 1999.

  • Diploma in Antiques and Decorative Arts, Regent Academy of Fine Arts, London, England, covering English Furniture, Clocks, Silver, Ceramics, Glass, Metalwork, Paintings and Prints, 11/16/1998.

  • University of Surrey, Guildford, England, survey courses on English Antiques, 1996 - 1997.

  • Core Coursework in Appraisal Studies ISA including Appraisal Principles and Business Practice, Appraisal Ethics, ISA Appraisal Report Writing Standards, USPAP, Legal Issues, Identification and Authentication, Market Research & Analysis, 2004.

  • Damage/Loss Appraisal Coursework ISA, course focuses on appraisals involving the moving and storage industries. Coursework on proper procedures to follow when trying to bring damage claims to a reasonable resolution, 12/4/2006 - 12/6/2006.

  • Expert Witness Coursework ISA, course prepares appraiser for appearing in court. In this course the appraiser learns about evidence and proof, expert qualifications, the rules of discovery, and what to expect at a deposition or going to trial, 12/7/2006 - 12/8/2006.

  • Professional Associations:

  • International Society of Appraisers, Distinguished Service Award, 2014

  • Certified Member Appraisers Association of America, 2008 - present

  • Certified Member, International Society of Appraisers, 2000 - present

  • Chair, Designation and Review Committee, ISA 2013 - 2014

  • Member of the Designation and Review Committee, 2006 - present

  • Appraiser, Pomeroy and Anderson, 2004 - 2008

  • Remmey Galleries, Auction House Appraiser, 1997 – 1998

Personal Education:

    B. A.  Economics, University of California, Davis

    B. A.  Sociology, University of California, Davis