The DELTA PREP Project aims to reduce risk for intimate partner violence (IPV). It engaged leadership and staff from 19 statewide domestic violence coalitions in building capacity to prevent IPV before it occurs (rather than solely responding to IPV). This article describes the process and outcomes associated with action planning to create coalition organizational change related to preventing IPV. Coalition staff and leadership planned for organizational changes in six goal areas: leadership, structures and processes, staffing, resource development, partnership development, and member agency development. Action planning was conducted during 2-day, in-person sessions that involved (a) review and refinement of coalition vision and mission statements, (b) interpretation of coalition assessments (for prevention capacity), (c) identification of specific organizational changes to be sought, and (d) specification of action steps for each proposed organizational change to be sought. The results show overall increases in the amounts, and variations in the kinds, of organizational changes that were facilitated by coalitions. Challenges related to action planning and future directions for capacity building among statewide IPV prevention coalitions are discussed.