This study investigates the causes of ethno-religious conflicts prevalence in Kaduna and its attendant influence on residential property development decisions in Kaduna, Nigeria. Data was collected through structured questionnaires and administered by trained Assistants to residential property owners/investors in selected neighbourhoods of Kaduna North and Kaduna South. A total of 5,439 questionnaires were administered to respondents (Property Owners/Investors) and 3,431 was retrieved. This includes 1,608 from Kaduna North and 1,823 from Kaduna South representing a total of 63.08% response rate. Quantitative data obtained from the questionnaires were analysed using descriptive statistics and logistic regression. The findings indicate that in Kaduna North, the incessant ethno-religious conflicts in the area, resulted to problems associated with low occupancy ratio occasioned which is a consequence of voids in many completed residential properties in the area, negatively affected investment decisions (B = 1.275, p = 0.049). In Kaduna South, the incessant conflicts in the area resulted to more significant problems which negatively affected residential property investment decisions including property loss due to violent attacks (B = -1.102, p < 0.001), limited access to financing (B = -3.392, p < 0.001), overall insecurity in the location (B = -1.816, p < 0.001), low property demand (B = 9.269, p < 0.001), and challenges with disposal and attracting quality tenants/occupants/buyers (B = -7.029, p < 0.001). The study recommends the need for strengthened security measures, improved access to financing, peace-building initiatives, infrastructure development, market support and capacity building. These findings provide valuable insights for policymakers and stakeholders in residential property development ventures in developing targeted strategies to promote sustainable residential property development in Kaduna.