A typical CPS investigation in California lasts 30 days, but extensions are common. During this time, social workers interview family members, teachers, and medical providers. Parents often feel powerless, but you have rights throughout the process. Providing documents strategically—not excessively—can help clarify misunderstandings. Avoid signing releases without legal advice, as they often allow broad access to private information. If the investigation is extended, it may signal concerns that need addressing. Early legal guidance can prevent the case from moving toward court involvement.