Participatory Geographic Information System (PGIS) is a participatory mapping methodology which underpins participatory rural appraisal tools to carry out community development planning. PGIS contributes a different perspective to he usual sectoral and action planning done in the National Community Driven development Program implemented by the DSWD. PGIS's intention is to guide the local community in examining the physical factors contributing to their socio-economic vulnerabilities and eventually incorporating spatial issues into their development agenda. The growing body of PGIS literature provides substantial proof of the tool's potentials to support the emerging approaches and mandates of the Philippine government ;i,e., bottom-up, spatial, and evidence-based planning. Following the empowerment and information system success models, this study conceptualizes an assessment design that explores PGIS's influence in community development planning in Santa Josefa, Agusan del Sur. The primary objectives of the assessment include; a)differentiation in respondents' spatial awareness, planning perceptions and practice before and after PGIS intervention; b) determination of PGIS influence in public planning and decision-making activities of the barangay; c)understanding the relationship between the respondents' characteristics and PGIS effectiveness; and d) recommending strategic measures to improve PGIS application in community development planning. The study carried out a survey from a sample of 150 trained PGIS participants, conducted group discussions with the 11 barangays, and performed informant interviews with select MLGU office heads. Although the research was confined by several methodological and longitudinal limitations, the findings of the case study illustrate how both PGIS characteristics and PGIS users' attributes add to and impede the tool's successful implementation in community planning.