The areas where citizens can take part in the transition to a more sustainable, environmentally conscious future are many, and in this project we wanted to focus on the building of sustainable spaces using six main themes: the use of recycled materials for building, small-scale and low-cost passive houses that use low levels of energy for heating and cooling, spaces for permaculture, green walls, roof gardens and indoor agriculture, all of which reduce the amount of energy and resources both in the building stage and during their maintenance thereafter. The project also offers participants the techniques to build sustainably in a more affordable way so to reach to expand opportunities for more people to join. The project developed methodologies using Online Digital Technologies to implement project activities with the main target groups: participants and professionals from higher education institutions, SMEs, VET schools and people working and volunteering for community groups, organisations and associations interested in the subject.