We aimed to identify the factors that are most important for community-dwelling older individuals (i.e., users) and primary care (PC) providers to enhance PC services. Discrete choice experiment surveys were administered to 747 individuals aged ≥ 60 years and 242 PC physicians in Singapore between December 2020 and August 2021. Participants were asked to choose between two hypothetical PC clinics and their current clinic. Latent class models were used to estimate the relative attribute importance (RAI) and to calculate the predicted uptake for enhanced PC services. Based on the attributes and levels used in this study, the out-of-pocket cost (RAI: 47%) and types of services offered (RAI: 25%) were the most important attributes for users while working hours (RAI: 28%) and patient load (RAI: 25%) were the most important for providers. For out-of-pocket visit costs ranging from Singapore dollars (S)$100 to S$5, users' predicted uptake for enhanced PC services ranged from 46 to 84%. For daily patient loads ranging from 60 to 20 patients, providers' predicted uptake ranged from 64 to 91%, assuming their income remains unchanged. Our study provides timely insights for the development of strategies to support the government's new health care initiative (HealthierSG), which places PC at the center of Singapore's healthcare system. The ability to choose their preferred clinic, low out-of-pocket costs and types of services offered (for users), and reasonable working conditions (for providers) were the key factors for users and providers to participate in enhanced PC services.