The property used in the apostolates of Opus Dei does not belong to the Prelature. Given their secular and lay character, all the centres and the different initiatives of social or educational nature are owned and run by autonomous foundations with their own boards of directors.

The foundations support, among other aims, the activities given in the centres of Opus Dei. These activities are open to anyone who wants to receive spiritual guidance. Most of the courses and the spiritual activities are free so that anybody can benefit from them. The foundations also help to sustain projects in Britain and in developing countries around the world. Members of Opus Dei are working with many others in promoting and implementing programmes of education and human aid, in the fight against material and spiritual poverty.