Upon news of the discovery of gold in Coloma, California on January 24, 1848, Burnett and his family moved south to participate in the rush. After modest success in getting gold, Burnett envisioned a career in law in San Francisco, a rapidly growing boomtown thanks largely to the Gold Rush. On the way to the Bay Area, Burnett met John Augustus Sutter, Jr., son of German-born Swiss pioneer John Sutter. Selling his father's deeded lands in the near vicinity of Sutter's Fort, the younger Sutter offered Burnett a job in selling land plots for the new town of Sacramento. Over the next year, Burnett made nearly US$50,000 in land sales in Sacramento, a city ideally suited due to its closeness to the Sierra Nevada and the neighboring Sacramento River's navigability for large ships.