Abstract: Modular structures for creating functional spaces are disclosed herein. The modular structures can include partitions, such as walls, storefronts, and/or doors that can be easily assembled in a desired space and selectively paired together to create a desired floorplan suitable for the environment. The modular structures may also include plumbing assemblies to facilitate the install of toilets. These modular structures can be used together to create a suitable layout for a co-working space, an office environment, a school, a hospital, a laboratory, a factory, and various other indoor spaces.