Von Ach House is a historic building located on the east side of Davenport, Iowa, United States.

Von Ach was a traveling salesman for the August Steffen Company, a wholesale dry goods dealer.

Prior to his association with Steffen, he worked as a salesman in smaller retail establishments.

[2] The Von Ach house is a combination of the Queen Anne and the Colonial Revival styles.

[2] The Queen Anne style is found in the pinwheel plan, the variety of surface textures employed, and the irregular window placement.