The series of ISA workshops started in 2009 to exchange original and cutting-edge research dedicated to indoor spatial awareness. As spatial information technologies and applications grow beyond their traditional boundaries, research into indoor space is increasingly attracting attention from academia and industry. Location Based Services, Geographic Information Systems, and ubiquitous computing applications are all extending their coverage from outdoor to indoor spaces. Indoor space differs from outdoor space in several important aspects, including layout, topology, constraints, and so forth. High-quality research is required to create new theories and to acquire fresh experiences that can be applied to building integrated, seamless systems across spatial boundaries. This workshop is intended to bring together researchers, developers, and practitioners who work on different topics of indoor spatial awareness and to provide a forum for inspiring interdisciplinary discussions in all relevant aspects.