Exact federal listing answer
Is Williams, John C., House on the National Register?
Yes · NPS status: Listed
Yes. Reference 75000565 is listed.
Yes. The U.S. National Park Service listed-properties dataset through May 22, 2026 identifies Williams, John C., House as Listed in the National Register of Historic Places under reference 75000565.
Federal statusListed
National Register reference75000565
Listed dateApril 24, 1975
Property categoryBuilding
Published address444 5th Ave. S.
LocalitySt. Petersburg, Pinellas County, Florida
Significance levelLocal
Published acreage0.9
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: ARCHITECTURE, SOCIAL HISTORY.
Other published names: Manhattan Hotel, Williams Mansion.
Same locality
Other released St. Petersburg records.
Each linked page answers a separate named federal record.