The structure at #7 West Shore Road originally was built to serve as a carriage house for the Frederick M. Eastman residence which stood on the foundations of the building now located at #1 West Shore Road, directly south of the carriage house. The Beers Comstock Map of 1873 identifies Henry Western Eastman as the owner of two lots bounded on the east by West Shore Road and on the south by what is now Mott Avenue. At that time there was no record of a residence or other buildings on the land. Completed a few years later, Francis Skillman's manuscript map, circa 1890, identifies this same parcel of land and one building as being owned by "F. M. Eastman, 1875." This suggests that the land passed from father to son after 1873, an idea which is further verified by a newspaper account in the East Norwich (L.I.) Enterprise of February 14, 1903, which notes that the house had belonged to Frederick Eastman "from the time of his marriage in 1875." If a conjectural date of 1875 is accurate, Frederick Eastman would have been responsible for the construction of the carriage house soon after taking up residence on the property with his bride.