Do I need the biological father's consent for stepparent adoption?

No — over 80% of the 34,000+ adoptions we have helped families complete were finalized without the other parent's consent. If the biological parent has abandoned the child — meaning no meaningful contact for the period defined by your state's law (typically 6-12 months) — the court will approve the adoption without their consent. The court is very familiar with this and wants the child to have the unity and security of a two-parent home.