{"nrhp_refnum":"87000667","name":"Coatesville Historic District","other_names":["See Also:Terracina","Lukens Main Office Building","National Bank"],"category":"district","location":{"address":"Roughly bounded by Chesnut St., Sixth Ave., Oak St., Fifth Ave., Harmony St., and First Ave.","address_restricted":false,"city":"Coatesville","county":"Chester County","state":"PA","lat":39.98224124650005,"lon":-75.81781031800784,"geom_source":"nps_gis"},"listed_date":"1987-05-14","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Commerce","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A historic district in the city of Coatesville, Chester County, Pennsylvania, comprising the city's commercial and residential core at the western end of the Great Valley near the west branch of the Brandywine Creek. It contains 490 buildings, of which 461 are contributing.","why_significant":"The district is argued to be important as western Chester County's principal commercial center, tied to the growth of the iron and steel industry. It holds the largest collection of Italianate commercial buildings in western Chester County and the largest collection of late nineteenth and early twentieth century worker housing in the county.","narrative":"Coatesville's historic district covers the commercial and residential core of an iron and steel city in western Chester County, Pennsylvania, set on a narrow valley floor and up its slopes. Most of its 461 contributing buildings are two or three stories, mostly brick, and date from the mid-eighteenth century to 1937, with more than two-thirds erected between 1850 and 1924. East Lincoln Highway between First and Third Avenues holds the largest concentration of Italianate commercial blocks in western Chester County, dating from about 1850 to 1895. Industrialists built mansions on South First Avenue, including the Gothic Revival Terracina, begun in 1848 and linked to Rebecca Lukens. Worker housing in the southeast quadrant is largely Carpenter Gothic duplexes, a collection regarded as the largest of its kind in the county. Churches, municipal buildings and the Lukens Iron and Steel Company office add further architectural range.","period_of_significance":"1750-1937","architect_builder":null,"architectural_style":"Italianate, Carpenter Gothic, Gothic Revival, Richardsonian, Queen Anne, Georgian Revival, Classic Revival, Second Renaissance Revival, Craftsman","criteria":["A","C"],"status_note":"Most first-floor store fronts have been altered, though several have been restored; the district remains largely intact.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:34.206573-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/87000667.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/87000667/84eeb5c4ea-800.webp","url_1600":"https://nationalhistoricalregister.com/media/87000667/84eeb5c4ea-1600.webp","licence":"CC0","author":"Smallbones","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Coatesville_HD_2.JPG\" rel=\"noopener\">Smallbones</a>, <a href=\"http://creativecommons.org/publicdomain/zero/1.0/deed.en\" rel=\"license noopener\">CC0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Coatesville_HD_2.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71995075","wikipedia":"https://en.wikipedia.org/wiki/Coatesville_Historic_District","wikidata":"https://www.wikidata.org/wiki/Q5138627"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/chester-county/coatesville-historic-district-87000667/"}