The Dunn Block (1878-1879) extends from 721 to 725 Washington Street, Oakland, California. Constructed by builders Haskell & Smilie, this block and the neighboring 715 to 719 Washington Street feature 19th century storefronts. The ground floor is currently home to the Bookmark Bookstore.
On November 9, 1982 the Dunn Block was designated an Oakland Landmark, #LM 82-264.
The building has a "ghost sign" for MJB Coffee on the south side.