Exact federal listing answer
Is Hammond Castle on the National Register?
Yes · NPS status: Listed
Yes. Reference 73000298 is listed.
Yes. The U.S. National Park Service listed-properties dataset through May 22, 2026 identifies Hammond Castle as Listed in the National Register of Historic Places under reference 73000298.
Federal statusListed
National Register reference73000298
Listed dateMay 8, 1973
Property categoryBuilding
Published address80 Hesperus Ave.
LocalityGloucester, Essex County, Massachusetts
Significance levelState
Published acreage6.5
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: MILITARY, SCIENCE, ARCHITECTURE, COMMUNICATIONS, INVENTION, PERFORMING ARTS.
Other published names: Abbadia Mare.
Same locality
Other released Gloucester records.
Each linked page answers a separate named federal record.