Table 2.

Professionals in the research circles and experts invited to single meetings, n = 35.

Country	Professionals, n = 15	Invited Experts, n = 20
Sweden	Architect (1) Retired real-estate agent (1) Grant manager housing adaptation (1) Accessibility consultant (2)	Occupational therapist (2) Business developer (1), from a multinational construction and development company based in Sweden
Germany	None	Architect (2), one of them is a city planner Nurse (3), one is also a remedial teacher, one is an educational scientist at goethe-university frankfurt am main, and the third is also a phd student at Fachhochschule Frankfurt am Main Counselors (7), all working in social communities. The fields of work are: living counseling; living counseling and open senior services; ambulatory services; emergency call system; psychosocial counseling and support; counseling for independent lifestyle in old age; accessibility Student (1), age of 15 years (interested in technology)
Italy	Architect (3): one from a public housing estate company, 1 expert in city planning, 1 expert in design Urban planner (1) Regional office of research and innovation (1) Phd student architect (1)	Engineer (2), one expert in home adaptation and one expert in Smart Home Technology
Latvia	Architect/interior designer (2) Occupational therapist (1) Real estate project developer (1) for seniors	Doctor and IT, it-specialist and programmer (1), practicing in mobile application development Interior designer (1), practicing in housing development for seniors