Christine Quinn's estranged husband, Christian Dumontet, is seeking sole ownership of their once-joint home in Los Angeles. Dumontet, 47, filed court documents on Friday, April 17, and obtained by Us Weekly, asking for control over the property in order to sell it and pay off the mortgage. According to Dumontet, he wants to sell the house to "stop the ongoing financial loss associated with maintaining a non-income-producing asset." Dumontet said he purchased the residence months before he married Quinn, 37, in 2019, and now has a $3.5 million balance on his mortgage loan.