Hiri Lagunkoiak denontzat/Friendly Cities for All is an interdisciplinary action-research ini-tiative using service-learning and OpenStreetMap tools with the three-fold purpose of heightening awareness of functional diversity and social inclusion, making collaborative diagnoses using an open-source software app and acting to overcome barriers that limit the accessibility for all in our cities. The project brings together the learning side (aware-ness + development of technological skills) with the service side (diagnoses & incident/reporting actions). It is a social innovation initiative for the construction of friendly cities for all that seeks to meet social needs not currently catered for by the market or the pub-lic sector, thus opening up a space for public engagement.This publication seeks to share the designed tools and the learning outcomes obtained in order for other organisations and/or schools to replicate the scheme in their own settings.