If a court has made a finding of domestic violence against the other party seeking custody or against a child’s sibling within the previous 5 years, there is a rebuttable presumption that awarding sole or joint physical or legal custody of the child to the perpetrator is detrimental to the child’s best interest.
Family Code section 3044(a); Marriage of Fajota (2014) 230 CA4th 1487; F.T. v L.J. (2011) 194 CA4th 1