Exact federal listing answer
Is Proctor Building on the National Register?
Yes · NPS status: Listed
Yes. Reference 98000064 is listed.
Yes. The U.S. National Park Service listed-properties dataset through May 22, 2026 identifies Proctor Building as Listed in the National Register of Historic Places under reference 98000064.
Federal statusListed
National Register reference98000064
Listed dateFebruary 5, 1998
Property categoryBuilding
Published address520-30 N. Milwaukee Ave.
LocalityLibertyville, Lake County, Illinois
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: COMMERCE.
Other published names: New Castle Hotel, Proctor Block.
Same locality
Other released Libertyville records.
Each linked page answers a separate named federal record.