| William Anzi Nichols House | |
| Coordinates: | 41.345°N -94.9992°W |
| Area: | less than one acre |
| Built: | 1856 |
| Builder: | David Harris |
| Added: | September 29, 1987 |
| Refnum: | 87001677 |
The William Anzi Nichols House is a historic residence located east of Winterset, Iowa, United States. Nichols bought an farm in 1855 and owned the land until he died in 1867. This house is an early example of a vernacular limestone farmhouse. The 1½-story structure is composed of locally quarried finished cut and rubble limestone. Its construction is attributed to David Harris who was known for laying the stones in a two against one broken bond.[1] The house was listed on the National Register of Historic Places in 1987.