Adsit House was a historic home located at Hornell in Steuben County, New York. It was a two-story, L-shaped brick dwelling constructed in stages between 1828 and 1880. The original section constructed in 1828 was a two-story, three-bay brick residence in the Federal style, the first brick structure in Hornell. It was listed on the National Register of Historic Places in 2003. The house was demolished on June 15, 2010. Hornell residents had mixed emotions about the historic house being razed.