{"nrhp_refnum":"08000529","name":"Orange Lawn","other_names":["Young Mansion"],"category":"building","location":{"address":"645 Charles Van Damme Way","address_restricted":false,"city":"Sonoma","county":"Sonoma County","state":"CA","lat":38.28872970000003,"lon":-122.44560128199998,"geom_source":"nps_gis"},"listed_date":"2008-06-09","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"Orange Lawn, also called the Young Mansion, is a two-story Italianate residence built about 1872 at 645 Charles Van Damme Way in Sonoma, California, set on about two acres of historic lawn and formal gardens.","why_significant":"The nomination argues the house is significant under Criterion C in architecture as a simplified Italianate villa with a wrap-around porch. Its sawn ornament shows a folk-art, steamboat-inspired character, and it has unusual slanted bays that contain doorways. Surviving 1888 lithograph and 1883-1892 glass plate negatives guided a careful 1996 restoration.","narrative":"Orange Lawn, also known as the Young Mansion, is an Italianate house in Sonoma, California, built about 1872 on land once part of Outlot 516 east of the Sonoma Plaza. The two-story wood-frame residence has thirteen rooms, a hipped roof with bracketed cornice, rounded and elliptical windows, and slanted bays that unusually contain doorways. A wrap-around porch carries sawn ornament in circle, slot, hole and diamond patterns, which the nomination reads as a folk-art, steamboat-inspired design. Daniel and Maria Young developed the property from 1870 to 1892. After decades of decline, the house was restored in 1996 using an 1888 lithograph and glass plate negatives from the 1880s and early 1890s. New work includes a sunroom, a porte cochere and added upstairs windows. About two acres of lawn, mature trees and gardens survive around the house. It was listed for its architecture, as a simplified but richly ornamented example of Italianate design in Sonoma County.","period_of_significance":"1872","architect_builder":null,"architectural_style":"Late Victorian: Italianate","criteria":["C"],"status_note":"Restored and renovated in 1996 and described as well maintained; in use as a single-dwelling mansion.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:29.630435-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/08000529.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/08000529/6855041473-800.webp","url_1600":"https://nationalhistoricalregister.com/media/08000529/6855041473-1600.webp","licence":"CC BY-SA 3.0","author":"Sanfranman59","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Orange_Lawn,_645_Charles_Van_Damme_Way,_Sonoma,_CA_6-12-2010_5-15-03_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:Orange_Lawn,_645_Charles_Van_Damme_Way,_Sonoma,_CA_6-12-2010_5-15-03_PM.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123862104","wikipedia":"https://en.wikipedia.org/wiki/Orange_Lawn","wikidata":"https://www.wikidata.org/wiki/Q127296808"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/sonoma-county/orange-lawn-08000529/"}