{"nrhp_refnum":"75001674","name":"Roberts House","other_names":[],"category":"building","location":{"address":"225 N. Central Ave.","address_restricted":false,"city":"Canonsburg","county":"Washington County","state":"PA","lat":40.260867888000064,"lon":-80.18719030099999,"geom_source":"nps_gis"},"listed_date":"1975-04-10","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A five-bay, two-story stone house in Canonsburg, Washington County, Pennsylvania, built in three parts with the old kitchen wing at the back the oldest section. It was once used as a post office by Roberts in its early days.","why_significant":"The nomination argues the house is a fine example of the Post Colonial style in Western Pennsylvania, combining Georgian, Roman Classical and Adamesque forms in a distinctive local manner. It is described as among the most important architectural contributions to Washington County, noted for its size, form, craftsmanship, stone facade, entrance and cornice. The document states it can bear comparison with similar work on the eastern seaboard.","narrative":"Built in three parts, with the oldest section being the kitchen wing at the back, this two-story stone house in Canonsburg has five bays and eight-over-eight windows with shutters. Its Georgian entrance has a recessed door and a semi-circular fanlight. A classical cornice with metopes, triglyphs and dentils runs the full length of the gable end, which is unusual for a late Georgian house in Western Pennsylvania. The coursed stonework imitates Flemish bond brickwork through alternating headers and stretchers, also uncommon for the region. Some original mantels survive in the interior. Roberts once operated a post office from the house. The property is significant as a fine example of what is termed the Post Colonial style, in which local builders selectively combined Georgian, Roman Classical, Adamesque and other Renaissance forms. The nomination regards it as one of the most important architectural works in Washington County and an irreplaceable monument to Western Pennsylvania architecture.","period_of_significance":"1800-1802","architect_builder":null,"architectural_style":"Georgian; Post Colonial style","criteria":[],"status_note":"Original site; described as residential in its present use.","vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:29.269782-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/75001674.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/75001674/633de6fe9a-800.webp","url_1600":"https://nationalhistoricalregister.com/media/75001674/633de6fe9a-1600.webp","licence":"CC BY-SA 4.0","author":"Lee Paxton (Original uploader was Leepaxton at en.wikipedia)","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:RobertsHouseCanonsburgPA.jpg\" rel=\"noopener\">Lee Paxton (Original uploader was Leepaxton at en.wikipedia)</a>, <a href=\"https://creativecommons.org/licenses/by-sa/4.0\" rel=\"license noopener\">CC BY-SA 4.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:RobertsHouseCanonsburgPA.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71994895","wikipedia":"https://en.wikipedia.org/wiki/Roberts_House_(Canonsburg,_Pennsylvania)","wikidata":"https://www.wikidata.org/wiki/Q15272846"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/washington-county/roberts-house-75001674/"}