{"nrhp_refnum":"78000804","name":"Llano Road Roadhouse","other_names":[],"category":"building","location":{"address":"4353 Gravenstein Hwy., S","address_restricted":false,"city":"Sebastopol","county":"Sonoma County","state":"CA","lat":38.35785947800008,"lon":-122.76875834299994,"geom_source":"nps_gis"},"listed_date":"1978-05-22","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Exploration/Settlement","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A T-shaped Greek Revival house at 4353 Gravenstein Highway South, at the corner of Llano Road near Sebastopol, Sonoma County, California. It was built around 1850, with a two-storey section added about 1857 when it became a stage line roadhouse.","why_significant":"The nomination calls it a good early example of Greek Revival farmhouse architecture built by early settlers and farmers in Sonoma County. Its main significance lies in its construction methods: hand hewn timbers, hand split siding and hand planed windows, built in the colonial manner before balloon framing. It is also expected to yield information on how early immigrant farmers built their first California houses.","narrative":"Built around 1850 at the corner of Gravenstein Highway and Llano Road near Sebastopol, this T-shaped Greek Revival house began as a single-storey farmhouse. A two-storey section was added about 1857, when the building became a roadhouse on the stage line from Petaluma to Sebastopol. The single-storey part has two rooms around a central stone fireplace, and the two-storey part has three rooms downstairs and two upstairs. Its framing uses hand hewn timbers mortised together on stone foundations, with handsplit and sawn clapboards and shiplap siding. The six-over-six windows show three eras of construction, including early hand planed sashes with wavy glass. The nomination values the house chiefly for these building methods, which resemble colonial practice before balloon framing, and for what its exposed structure could reveal about how early immigrant farmers built. Alterations include changed siding, updated interiors and a partly enclosed porch.","period_of_significance":"c.1850","architect_builder":null,"architectural_style":"Greek Revival (T-shaped farmhouse form)","criteria":[],"status_note":"Listed as occupied/unoccupied both marked on the form; condition described as generally intact with altered siding and interior finishes, and a partly enclosed porch. A later note says it was purchased to be rehabilitated as a country inn.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:31.66741-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/78000804.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/78000804/1c459c3880-800.webp","url_1600":"https://nationalhistoricalregister.com/media/78000804/1c459c3880-1600.webp","licence":"CC BY-SA 3.0","author":"Sanfranman59","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Llano_Road_Roadhouse,_4353_Gravenstein_Highway,_South,_Sebastopol,_CA_7-11-2010_3-30-30_PM.JPG\" rel=\"noopener\">Sanfranman59</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:Llano_Road_Roadhouse,_4353_Gravenstein_Highway,_South,_Sebastopol,_CA_7-11-2010_3-30-30_PM.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123862092","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q133554667"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/sonoma-county/llano-road-roadhouse-78000804/"}