The Ackerman–Dater House, also known as the Sampmill Farm, is located at 109 West Saddle River Road in the borough of Saddle River in Bergen County, New Jersey, United States.

[1][3] It was listed as part of the Early Stone Houses of Bergen County Multiple Property Submission (MPS)[4] and the Saddle River MPS.

[5] According to the nomination form, Johannes Ackerman bought 245 acres (99 ha) here in 1745.

The main part of the house is dated from 1790 to 1800 based on architectural evidence.

Maria Ackerman married Abraham Dater, who is listed as the owner in 1861 and 1876.