This study aims to analyze community welfare in Nagari Lubuk Gadang Tenggara, a village established through the regional expansion policy under South Solok Regent Regulation Number 25 of 2017, and to examine its implementation from the perspective of Fiqh Siyasah Tanfidziyah. The establishment of new administrative areas is expected to improve public service delivery, accelerate development, and enhance the welfare of local communities. This research employed a qualitative field research approach to explore the empirical conditions of community welfare and the effectiveness of local governance after the regional expansion. Data were collected through in-depth interviews with 13 informants consisting of village officials, community leaders, and local residents. Supporting data were obtained from government regulations, official documents, and relevant literature on public welfare and Islamic political jurisprudence. The collected data were analyzed using qualitative descriptive techniques through data reduction, data presentation, and conclusion drawing. The findings reveal that the implementation of South Solok Regent Regulation Number 25 of 2017 has generated positive impacts on community welfare, particularly through improved accessibility and efficiency of public administrative services. The proximity of government offices has reduced bureaucratic barriers and facilitated community participation in local governance. Nevertheless, several structural challenges continue to hinder the achievement of comprehensive welfare, including the unequal distribution of social assistance, limited village financial capacity, inadequate internet connectivity, poor road infrastructure, and insufficient educational and healthcare facilities. From the perspective of Fiqh Siyasah Tanfidziyah, these developments reflect partial fulfillment of the government's responsibility to promote public welfare (maslahah).