The triple- decker was introduced to both Boston and Worcester around 1880 and was instantly recognized by developers as a fast and efficient way to house the less affluent. This building type recommended interior features such as Colonial Revival style mantelpieces and built- in china cupboards. The popularity of the triple- decker rose exponentially after the introduction of the electric trolley to Boston neighborhoods, circa 1890, and it proliferated in areas such as Dorchester and South Boston. The triple- decker persisted in popularity until 1915, and in some areas even later, such as Jamaica Plain where this multi- family housing type was still being built as late as 1930