Building at 217 West Main Street, also known as the Open Door Service Center Building, is a historic commercial building located at Sedalia, Pettis County, Missouri, US. It was built in 1874, and is a two-story, L-shaped, Italianate style brick building. A wing was added in 1906. It features a decorative metal cornice and three round arched windows. The building is known to have housed a brothel in the late-19th and early-20th centuries.

It was listed on the National Register of Historic Places in 1996. It is located in the Sedalia Commercial Historic District.