Abstract: Apparatus is for a baseboard installable relative to a wall assembly supported by a wall-support structure. The apparatus includes a body assembly configured for installation relative to the wall assembly and the baseboard. A visual-reveal feature is formed between the body assembly and the baseboard once the body assembly and the baseboard are positioned relative to each other, the body assembly is installed to the wall assembly, and the baseboard is installed to the wall assembly. The body assembly includes a wall-support contact portion configured to contact the wall-support structure. First engagement assembly extends from the wall-support contact portion. Second engagement assembly is configured to be attachable to the baseboard. Second engagement assembly and first engagement assembly are configured to engage with each other.