He quickly rose to the top of the real estate game in numerous California counties. When he was a real estate agent, he met Christina, the woman who would become his wife. Up until 2008, when the American real estate market experienced a severe crisis, everything was going as planned. Due to their financial situation, Tarek and Christina were forced to relocate to a less expensive house. Tarek started investigating a novel solution in order to deal with the financial shortage. He started obtaining foreclosed homes for cheap, which he would later restore and resell. The couple made their first profit after purchasing a house in Santa Ana for 115,000 USD and selling the renovated home. This route yielded a higher profit, and their financial situation began to improve.
In 2011, Tarek and Cristina recorded themselves purchasing foreclosed properties, refurbishing them, and then reselling them in order to pitch a new reality series to HGTV. The TV network executives were taken aback by the clip and agreed that the concept had promise. Tarek agreed to host a weekly show showcasing their work after they contacted the couple with the idea. After that, in 2012, he and Christina agreed to a deal with HGTV, which led to the creation of the program 'Flip or Flop.'
The pair was shown purchasing a foreclosed property on the show, remodeling it, and then reselling it for a significant profit. On April 16, 2013, the first episode of 'Flip & Flop' aired. The program was a great hit and ran for five seasons straight. Tarek and Christina rose to fame, and audiences developed a warm spot for them thanks to peeks into their picture-perfect family life with two kids. Tarek has also started hosting a different show on the HGTV network in the meantime.
Along with his wife Christina, Tarek founded the El Moussa Group, a real estate firm that predominantly operates in Orange County, California, which has one of the highest foreclosure rates in the nation. Since then, they have increased their operations in the nearby states of Arizona and Nevada.