A system for mounting a service component to a building structure has a plurality of elongate feet, and a plurality of connectors that each interconnect a respective one of the feet with the service component. Each foot is configured to affix to a surface of the building structure and then to resist disengagement from that surface. The connectors each interconnect a respective one of the feet with the service component, and secure the relative position of the respective foot and the service component. An elongate beam can be connected or connectable to the service component, such that in the installed system the beam is to be positioned to extend obliquely across the feet.