Bynes was placed on an involuntary psychiatric hold last month after police say she started a fire in the driveway of a stranger's Thousand Oaks home.
Bynes' attorneys say Bynes does not feel that a conservatorship is necessary. But Ventura County Judge Glen Reiser disagreed, ruling Friday that Richard and Lynn Bynes should be allowed to limited control of Bynes' personal affairs, including medical treatment. He also gave Lynn Bynes control over her daughter's finances.
The former child actress was not in court for the hearing. Doctors at the psychiatric hospital she is being treated at got a one-month extension on her psychiatric hold. According to her attorneys, she did not feel well enough to be in court.
Reiser said a mental health court has control over Bynes' medical treatment, but if she is released from a psychiatric facility, then her mother will have authority to decide treatment.
In the petition for conservatorship, the actress' parents said their daughter has become increasingly paranoid and had expressed concern she was being watched. They also cited her profound issues with her body image and her run-ins with the law.
The petition states that Bynes rapidly depleted her $4 million savings account, and also states that most of the money is believed to be spent on illegal substances and possibly plastic surgery.
In court, the judge told Lynn Bynes to refrain from making any decisions on her finances without consulting the actress' attorney. A follow-up hearing is scheduled for Sept 30.
The Associated Press contributed to this report.