A quick-connect trim system (100, 100a, 100d) for securing elements of trim to a structural wall of a building, about one or more of interior and exterior portions of the structural wall, the system comprising: an element of trim; one or more wall-mounted connectors securable to or integrated with a portion of the wall of the building, the one or more wall-mounted connectors including one or more first coupling features; and one or more trim-mounted connectors secured to or integrated with the element of trim, the one or more trim-mounted connectors including one or more second coupling features; wherein: the one or more first coupling features are coupleable with the one or more second coupling features to couple the one or more wall-mounted connectors with the one or more trim-mounted connectors; and the element of trim covers one or more unfinished edges of a cladding layer of a structural wall of a building when the one or more wall-mounted connectors are coupled with the one or more trim-mounted connectors; characterized in that the one or more wall-mounted connectors include one or more tensioning members that are distinct from the one or more first coupling features, the one or more tensioning members being adapted to flex against the element of trim to push the element of trim away from the one or more wall-mounted connectors and place the one or more first coupling features and the one or more second coupling features in tension one with another. an element of trim; one or more wall-mounted connectors securable to or integrated with a portion of the wall of the building, the one or more wall-mounted connectors including one or more first coupling features; and one or more trim-mounted connectors secured to or integrated with the element of trim, the one or more trim-mounted connectors including one or more second coupling features; wherein: the one or more first coupling features are coupleable with the one or more second coupling features to couple the one or more wall-mounted connectors with the one or more trim-mounted connectors; and the element of trim covers one or more unfinished edges of a cladding layer of a structural wall of a building when the one or more wall-mounted connectors are coupled with the one or more trim-mounted connectors; characterized in that the one or more wall-mounted connectors include one or more tensioning members that are distinct from the one or more first coupling features, the one or more tensioning members being adapted to flex against the element of trim to push the element of trim away from the one or more wall-mounted connectors and place the one or more first coupling features and the one or more second coupling features in tension one with another. the one or more first coupling features are coupleable with the one or more second coupling features to couple the one or more wall-mounted connectors with the one or more trim-mounted connectors; and the element of trim covers one or more unfinished edges of a cladding layer of a structural wall of a building when the one or more wall-mounted connectors are coupled with the one or more trim-mounted connectors; characterized in that the one or more wall-mounted connectors include one or more tensioning members that are distinct from the one or more first coupling features, the one or more tensioning members being adapted to flex against the element of trim to push the element of trim away from the one or more wall-mounted connectors and place the one or more first coupling features and the one or more second coupling features in tension one with another.