John R. Leonard, ISA AM, Antiques, Furnishings + Decorative Arts



John R. Leonard
ISA member since May 06, 2010

(630) 495-0229 (Office)
(630) 519-6090 (Office direct)
(630) 519-6089 (Fax)

Address #1
330 W. Interstate Rd.
Addison, IL 60101 map

Address #2
318 W. Adams
Ste. 1526

Chicago, IL 60606 map

Send an email


Leonard Auction connects a global market of buyers to our curated catalog of estate auction lots and makes it easy to buy and sell quality items.  We ensure that every item we feature is always represented accurately and given the utmost care through the entire auction process. From appraisal and item pickup, all the way through to final delivery to the buyer, our experienced team of auction professionals ensures a smooth transaction.  Leonard Auction offers customers an honest, easy-to-work-with, knowledgeable and experienced partner for all their auction needs.

Leonard Auction, was founded by auctioneer and appraiser John Leonard in 2006. Our first auction house located in Naperville, Illinois opened May 1, 2006. The business grew rapidly and we quickly outgrew our space. This prompted our September 2007 move to our current auction house located in Addison, Illinois. Our 8,000 square foot auction house features ample display, office and warehouse space to serve our clients, estates and customers alike.


  • Collectibles
  • Collectibles - Coins & Currency
  • Decorative Arts & Accessories
  • Memorabilia
  • Silver


  • Auction
  • Equitable Distribution
  • Estate Evaluations
  • Estate Probate
  • Estate Sales

Performs Appraisals Of

  • Art
  • Collectibles - Coins & Currency
  • Furniture
  • Jewelry
  • Silver


From the ISA Now Blog

See all blog posts