{"nrhp_refnum":"89002281","name":"Miller's House at Spring Mill","other_names":[],"category":"building","location":{"address":"North Ln. and Hector St.","address_restricted":false,"city":"Conshohocken","county":"Montgomery County","state":"PA","lat":40.07591443900003,"lon":-75.28637070399998,"geom_source":"nps_gis"},"listed_date":"1990-01-04","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A two and a half story gneiss stone house with a gable roof at Spring Mill in Conshohocken, Montgomery County, Pennsylvania, built in two sections, the main block dated c. 1770 and a western addition dated c. 1820. It was the residence of the miller who operated the Spring Mill.","why_significant":"The nomination argues the house is architecturally significant for its highly unusual transversed Georgian floor plan, with corner fireplaces and the chimney on the non-gable side, which it says has no known precedent in the area. It also cites the rare Pantheon-pattern hob grate and the high level of original integrity, including the building never having been renovated.","narrative":"Built in two sections of local gneiss stone, the Miller's House at Spring Mill stands beside the Schuylkill River on North Lane in Conshohocken. The main block dates to about 1770 and was the residence of the miller Joseph Paul, who shared the mill with Thomas Livezey, Jr. A western addition of about 1820 was added to it. The main section has a transversed Georgian plan, with the entrance in the middle of the long hall and the chimney in the center of the back wall, and corner fireplaces in both parlors. The nomination states that no known examples of this plan variation exist in the Philadelphia region. A rare cast iron hob grate of the Pantheon pattern survives in one parlor fireplace. The house is regarded as an unusually intact example of a middle class vernacular house built for a mill owner, with much of its original woodwork, sash and hardware still in place. It was vacant for more than thirty years before being sealed.","period_of_significance":"1770-1820","architect_builder":null,"architectural_style":"COLONIAL/Georgian","criteria":["C"],"status_note":"Vacant for over thirty years; the building was sealed after some water and vandal damage.","vacant_flag":true,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:38.148329-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/89002281.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/89002281/f7ab602421-800.webp","url_1600":"https://nationalhistoricalregister.com/media/89002281/f7ab602421-1600.webp","licence":"CC0","author":"Smallbones","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Millers_House_Conshohocken_PA.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:Millers_House_Conshohocken_PA.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71995136","wikipedia":"https://en.wikipedia.org/wiki/Miller%27s_House_at_Spring_Mill","wikidata":"https://www.wikidata.org/wiki/Q6858999"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/montgomery-county/millers-house-at-spring-mill-89002281/"}