Exact federal listing answer
Is Sun House on the National Register?
Yes · NPS status: Listed
Yes. Reference 81000161 is listed.
Yes. The U.S. National Park Service listed-properties dataset through May 22, 2026 identifies Sun House as Listed in the National Register of Historic Places under reference 81000161.
Federal statusListed
National Register reference81000161
Listed dateSeptember 2, 1981
Property categoryBuilding
Published address431 S. Main St.
LocalityUkiah, Mendocino County, California
Significance levelState
Published acreage0.4
Exact answer boundaryThis confirms the named federal record only.
It does not prove that another address lies inside this property or district, establish local landmark status, decide preservation review, define a legal boundary, or describe ownership or current condition.
Why the wording is date-boundedThe answer reflects the NPS dataset published through May 22, 2026 and a live NPS GIS Listed-status cross-check made September 20, 2026. NPS notes that spatial points and polygons may need correction and are not legal documents.
Additional published fields
Areas of significance: NATIVE AMERICAN, ART, ARCHITECTURE.
Other published names: Hudson-Carpenter Estate.
Same locality
Other released Ukiah records.
Each linked page answers a separate named federal record.