In the early 1970s the property underwent extensive renovations led by Ira Landis to restore it to resemble the original Herr residence.

[4] In 2010 the Lancaster Mennonite Historical Society added the first major addition to the Hans Herr property since the 1700s by building a replica longhouse based on the remnants of one found during the 1969 renovation.

[5] The stated purpose for this exhibit was to honor the legacy of the indigenous peoples who lived in Lancaster County before the arrival of Anabaptist settlers.

[5] The Hans Herr house is known for its unique style and architecture reflecting the German medieval period.

The building contains numerous architectural characteristics that have their roots in medieval south-German architecture, such as a steeply pitched roof with two attic levels, small asymmetrical windows, a date stone carved into the door lintel, a central chimney, and a staircase where each step is a single pegged into a diagonal beam.