Eleanor Coade acquired an existing artificial stone manufactory in Lambeth, London. The exact details of the acquisition remain unclear, but she likely saw the potential for improvement and expansion in the business. The factory was initially run by a Mr. Richard Holt.

Coade dedicated significant time and resources to refining the formula and production process of the artificial stone. She developed a secret recipe, improving its durability, weather resistance, and aesthetic qualities. Although never patented, the improved stoneware became known as 'Coade Stone'.

Under Eleanor Coade's astute management, the Coade Stone business flourished. She secured prestigious commissions for architectural ornaments, statues, and garden features for notable clients, including royalty, aristocrats, and leading architects. This period marked the height of Coade Stone's popularity and influence.

John Sealy became a partner in the Coade business. He brought architectural and sculptural expertise to the company. During this time the company was called Coade & Sealy.