The brand is advertised on the radio but it is not physically found in San Andreas as a business, although there is an advertisement in the official manual of the game stating the business is located on Dix Road, Los Santos.
Grand Theft Auto IV and Chinatown Wars
In GTA IV, de Koch has several physical stores in Liberty City. Their logo remains identical to the GTA San Andreas rendition.
Grand Theft Auto V and Grand Theft Auto Online
In GTA V and GTA Online, the player can buy De Koch clothing accessories at Ponsonbys, but there are no dedicated De Koch stores in southern San Andreas. In GTA Online, organizations can store and sell looted De Koch jewelry. In addition, a De Koch clock can be found in many interiors, such as a traditional-style Hangar.