This book constitutes the refereed proceedings of the 11th International Conference on Smart Homes and Health Telematics, ICOST 2013, held in Singapore, in June 2013. The 22 revised full papers presented together with one invited paper and 19 short papers were carefully reviewed and selected from 53 submissions. The papers are organized in topical sections on Supportive Technology for Ageing and People with Cognitive Impairment; Activity Recognition and Algorithmic Techniques; Trust, Security and Social Issues; Assistive Robotics and HCI Issues; Supporting Safety and Pervasive Healthcare; Home Energy Usage, Reasoning Framework, Services; Algorithms for Smart Homes; Eldercare – Activity Recognition and Fall Detection; Healthcare and Rehabilitation; Robotics and Assistive Living.