{"nrhp_refnum":"76001624","name":"Lukens Main Office Building","other_names":[],"category":"building","location":{"address":"50 S. 1st Ave.","address_restricted":false,"city":"Coatesville","county":"Chester County","state":"PA","lat":39.98188769700005,"lon":-75.82334834599999,"geom_source":"nps_gis"},"listed_date":"1976-05-24","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A seven-bay, 2½-story brick office building at 50 South First Avenue in Coatesville, Chester County, Pennsylvania, erected in 1902 in a Georgian Revival mansion form with a rear addition of 1916. It served as the commercial office of the Lukens Steel Company.","why_significant":"The nomination argues the building is significant to American architectural history as a commercial example of the Georgian Revival, a style it says was important to a new, more highly developed industrial economy. It states that the design uses traditional elements in new ways, combining steel girders and concrete floors with a structure devoted entirely to business purposes. The front section is also described as an example of the work of Cope and Stewardson, a firm known for stone buildings in the Collegiate Gothic idiom.","narrative":"Built in 1902 at 50 South First Avenue in Coatesville, the Lukens Main Office Building is a seven-bay, two-and-a-half-story brick office in the Georgian Revival style, laid in Flemish bond under a hipped roof. Its centre entrance has a flat-roofed Doric portico, and the interior is organised around a 25 by 45 foot entrance lobby with a monumental open-string stair. Unpainted oak finishes the lobby and most major rooms, and the seven principal offices had working fireplaces with carved mantels. A rear addition of 1916 by Page and Stewardson turned the plan into an H shape. The building is regarded as a well-preserved example of commercial Georgian Revival design. It was built for the Lukens Steel Company, and the nomination stresses how it adapts traditional forms to steel framing and concrete floors for a purely business use.","period_of_significance":"1902-1916","architect_builder":"Cope and Stewardson (1902); Page and Stewardson (1916 addition)","architectural_style":"Georgian Revival","criteria":["C"],"status_note":"Well maintained, according to the nomination's comments; the form also lists the building as in use for commercial purposes.","vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:29.619665-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/76001624.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/76001624/5b88bb69f4-800.webp","url_1600":"https://nationalhistoricalregister.com/media/76001624/5b88bb69f4-1600.webp","licence":"Public domain","author":"Smallbones","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Lukens_Main_Office.JPG\" rel=\"noopener\">Smallbones</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Lukens_Main_Office.JPG"},"district":{"nrhp_refnum":"87000667","name":"Coatesville Historic District","url":"https://nationalhistoricalregister.com/districts/pennsylvania/coatesville-historic-district-87000667/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71995077","wikipedia":"https://en.wikipedia.org/wiki/Lukens_Main_Office_Building","wikidata":"https://www.wikidata.org/wiki/Q6702515"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/chester-county/lukens-main-office-building-76001624/"}