Gablefront house

[1] They were built in large numbers throughout the United States primarily between the early 19th century and 1920.

A gablefront cottage is a smaller variant, consisting of either a single story or a story-and-a-half.

[4] The gablefront house form remained popular into the early 20th century.

The add-on was usually in order to obtain additional space, light and cross-ventilation.

The T-plan house consists of gable-ends on either side of the front-facing main gable.