Heritage Auction Galleries is a privately owned company, with headquarters in Dallas, Texas and offices in Houston, Texas as well as multiple locations in Germany, Switzerland, Holland and France. Heritage has also announced plans to open high-profile locations in Beverly Hills, California in February 2010, and in Midtown Manhattan later in 2010.

Heritage Auctions combines both proxy and live Internet bidding with traditional floor auctions. In both 1999 and 2001, www.HeritageCoin.com, the predecessor to www.HA.com, was chosen by Forbes Magazine as one of the 250 best sites on the Internet. According to Internet traffic measurement site Compete.com, HA.com receives more than twice as many visitors as Sothebys.com and Christies.com combined. Heritage hosts separate website sections for each type of collectible they support and each lot's web listing contains third-party pricing and rarity data.

In addition to live and online auctions, the various Heritage websites offer useful information for collectors. Some of the sites (coins, for example) have an extensive glossary of terms. Many lot descriptions contain colorful human interest stories related to the item. Also, there are archives of over 2,000,000 lots, permitting the collector to research items of interest for descriptions, images, population, pedigrees and prices realized in past auctions.