The Jens Nielsen House has been termed a "Type IV pair-house" and is made with stone and adobe made to look like stone.
It is an example of what has been termed a "Type IV pair-house", given it has a tripartite plan (appears to have three equal-sized rooms, each with two bays, and an indented porch in the center section. The outside rooms are stone with a coursed ashlar finish; the center section is adobe, plastered over and marked off on the front to resemble stonework. 
