The Encinitas Boathouses on Third Street between F and G Streets are a pair of boat-shaped residences — the S.S. Encinitas and the S.S. Moonlight — built in 1928 by architect Miles Minor Kellogg. Kellogg constructed the dwellings from recycled lumber salvaged from the Moonlight Beach Dance Hall and Bathhouse demolished during Prohibition, placing them along the same Old Encinitas corridor where La Paloma Theatre also opened in 1928. Both structures were added to the National Register of Historic Places on October 21, 2019, classified as examples of fantasy-themed programmatic residential architecture by the California State Historical Resources Commission. The Encinitas Preservation Association acquired the properties in 2008 and maintains them as occupied private residences, with future plans to convert one unit into a publicly accessible museum. The Encinitas Historical Society includes the Boathouses on its guided downtown walking tours held the third Saturday of each month, alongside other landmark stops near Inn at Moonlight Beach in Old Encinitas. Each dwelling measures approximately 20 feet long by 15 feet tall across 1,100 square feet of interior space, equipped with 19 portholes, a mariner's wheel, and a bow that functions as a front patio.