Exact federal listing answer
Is Iron Workers' Cottage on the National Register?
Yes · NPS status: Listed
Yes. Reference 09000531 is listed.
Yes. The U.S. National Park Service listed-properties dataset through May 22, 2026 identifies Iron Workers' Cottage as Listed in the National Register of Historic Places under reference 09000531.
Federal statusListed
National Register reference09000531
Listed dateJuly 16, 2009
Property categoryBuilding
Published address40 Wilbur St.
LocalityLake Oswego, Clackamas County, Oregon
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: INDUSTRY.
Other published names: Oregon Iron &, Steel Company Workers' Cottage, Iron Company, Workers' Cottage.
Same locality
Other released Lake Oswego records.
Each linked page answers a separate named federal record.