The Patrick J. Ahern House is a historic house at 403 Laurel Street in Texarkana, Arkansas. It is a large 2-1/2 story concrete block structure, set on a corner lot with a low retaining wall, which serves to accentuate the buildings already large scale. The hip roof projects over the street-facing sides, and is supported on those sides by two-story Doric columns. On the side facing East 4th Street, a portion of the upper level has been enclosed, one of the few alterations made to the structure since its construction. It was built in 1906, during the city's boom years, by Patrick Ahern, an Irish immigrant who owned a dry goods business, and has remained in the hands of his descendants.