Hall ran the real-estate agency Tarek and Christina: The El Moussa Group with her first husband Tarek in Orange County, California.
In June 2018, it was announced that Hall would be featured in her own spin-off show, Christina on the Coast.
In March 2020, Hall released a book, The Wellness Remodel, with certified nutritionist Cara Clark.
On July 14, 2020, Hall announced she will be partnering with Spectra Furniture to create a furniture line for the brand.
Hall has been profiled throughout her career in a variety of journals and newspapers, including the Orange County Register and Good Housekeeping
In October 2006, she began dating Tarek El Moussa and the couple got married in 2009. Their daughter was born in 2010 and their son was born in 2015.
In November 2017, she began dating English television presenter Ant Anstead. On December 22, 2018, she married Anstead. The couple's only child together was born on September 6, 2019.
In July 2021 that Haack was dating realtor Joshua Hall; the two became engaged in September of the same year. According to reports, the couple got married on April 5, 2022.
Christina Haack has an estimated net worth of $25 million as of 2022.