The Suppo Building was designed by Julia Morgan for the woodcarver Jules Suppo. Suppo and his family probably lived upstairs, and he had his woodworking shop on the ground level.

Other than an article in the Summer 2023 edition of the National Trust for Historic Preservation Magazine, we have found no documentation for this building. The San Francisco Property Information Map (PIM) website did not show a construction year or architect. We obtained the construction year of 1925 from the Redfin website.