Abstract: Some embodiments of the present invention employ a modular room including a plurality of modular room components (e.g., anchor assemblies, upright assemblies, etc.). These anchor assemblies and upright assemblies can take different forms permitting assembly of a modular room or modular structure in different manners, and in some cases provide for interchangeable interior and exterior wall panels and components. In some embodiments, a bracket assembly is coupled to an substantially vertical elongated upright for improved strength and stability. Preferably, the anchor assembly has a base plate with at least one edge at an angle with respect to the rest of the base plate for additional strength. If desired, the vertical position of the upright with respect to the base plate can be adjusted. In some embodiments, one or more overhead trusses are used to stabilize the walls of a modular room.