{"nrhp_refnum":"83004255","name":"Occoquan Historic District","other_names":[],"category":"district","location":{"address":"Roughly bounded by the Occoquan River, Center Lane, Washington St. and western end of Mill St.","address_restricted":false,"city":"Occoquan","county":"Prince William County","state":"VA","lat":38.685646480500054,"lon":-77.26175911638116,"geom_source":"nps_gis"},"listed_date":"1983-10-06","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Commerce","Military","Architecture","Invention"],"significance_levels":["state"],"summary":{"what_it_is":"A historic district of sixty structures on the north bank of the Occoquan River in the town of Occoquan, Prince William County, Virginia, centered on Mill, Commerce, Union, Washington and Ellicott streets. It includes buildings from the 18th century through the early 20th century.","why_significant":"Occoquan grew from John Ballendine's colonial ironworks and mills into a flour-milling center that used Oliver Evans's labor-saving mill inventions, and it remained a commercial and industrial town into the 1920s. The district preserves a port-village appearance through vernacular late 19th and early 20th century homes and shops. Three older landmarks survive: Rockledge, the Mill House and the Hammill Hotel.","narrative":"Occoquan is a small river town in Prince William County, Virginia, whose historic core covers sixty structures on the north bank of the Occoquan River. Most are two-story frame houses and shops from the late 19th century, often with German siding and decorative porches, while the oldest buildings are of stone or brick. Commercial buildings along Mill Street mostly date from after a fire in 1916. The town began around tobacco warehouses of the 1730s and grew under John Ballendine, who built an iron furnace, forge and sawmills before 1759. After the Revolution it became a prosperous flour-milling center, and its mill used the inventions of Oliver Evans before burning in 1924. Surviving older landmarks include Rockledge, a Georgian stone house of about 1760 that was gutted by fire in 1980, the stone Mill House, and the Hammill Hotel of about 1830. Today many buildings house shops and restaurants that draw visitors from the Washington area.","period_of_significance":"1700-1799, 1800-1899, 1900- (boxes checked on the form)","architect_builder":null,"architectural_style":"Builder's vernacular, with Georgian, Federal, Colonial Revival, American 4-square and commercial vernacular examples","criteria":[],"status_note":"Many former residences have been converted to specialty shops and restaurants, and the town is a tourist destination. Rockledge was damaged by fire in 1980 and only its exterior walls remain. Seven of the sixty structures are noncontributing.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:51:59.635502-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/25/6827/41682725/content/electronic-records/rg-079/NPS_VA/83004255.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/83004255/07250f829c-800.webp","url_1600":"https://nationalhistoricalregister.com/media/83004255/07250f829c-1600.webp","licence":"CC BY-SA 3.0","author":"JERRYE &amp; ROY KLOTZ MD","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:OCCOQUAN_HISTORIC_DISTRICT.jpg\" rel=\"noopener\">JERRYE &amp;amp; ROY KLOTZ MD</a>, <a href=\"https://creativecommons.org/licenses/by-sa/3.0\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:OCCOQUAN_HISTORIC_DISTRICT.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/41682725","wikipedia":"https://en.wikipedia.org/wiki/Occoquan_Historic_District","wikidata":"https://www.wikidata.org/wiki/Q15263347"},"indexable":true,"url":"https://nationalhistoricalregister.com/virginia/prince-william-county/occoquan-historic-district-83004255/"}