Although first-time parents have a great need for effective support in the first challenging years of child upbringing, there is little research on volunteer-led parenting support programs in the context of the transition to parenthood. Therefore, this qualitative study examined the perceived value and key components of Home-Start, a volunteer-led parenting support program aimed at parents who have everyday parenting questions and receive little support from their environment, in the transition to parenthood. Semi-structured interviews were conducted among mothers (N = 10) with a first child up to 1.5 years old who were enrolled in the Home-Start program in the Netherlands, and volunteers (N = 12) who supported these parents. Important outcomes of the Home-Start program were increased positive parent-child interactions, improved parental confidence, and an expanded social network. Identified core needs of first-time mothers in the Home-Start program were social, emotional, informational, and instrumental support needs. Suggestions were provided to better align the program's structure with challenges in the transition to parenthood. For example, facilitating the parent-volunteer match during pregnancy, and developing a module in the Home-Start training for volunteers aimed at providing structured and informative support based on the latest insights into infant and postpartum care.