{"nrhp_refnum":"81000286","name":"Sanborn House","other_names":["Aigremont"],"category":"building","location":{"address":"21 High St. (formerly 15)","address_restricted":false,"city":"Winchester","county":"Middlesex County","state":"MA","lat":42.445770792000076,"lon":-71.15607995199997,"geom_source":"nps_gis"},"listed_date":"1981-12-14","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Commerce","Architecture"],"significance_levels":["state","local"],"summary":{"what_it_is":"A two-story stuccoed house with a raised attic and an original carriage house, at 15 High Street in Winchester, Massachusetts, built 1906-07 for Oren Cheney Sanborn on a hillside site overlooking the town center.","why_significant":"The nomination argues the house is significant for its association with the Sanborn family, of the Chase and Sanborn Co., and for its architecture. It is described as a locally unique Mannerist interpretation of the Beaux-Arts style and one of few houses in the Boston area with mannerist characteristics. The architect is unknown.","narrative":"Sanborn House, also called Aigremont, is a large stuccoed residence at 15 High Street in Winchester, Massachusetts. Designed in 1907 in a Mannerist interpretation of the Beaux Arts style, it sits on a hillside overlooking the town center, with an original carriage house behind it. The main block has two stories and a raised attic, with white painted wood detail, a dentiled entablature, a balustrade and a projecting frontispiece. Oren Cheney Sanborn, son of a founder of the Chase and Sanborn Co. of Boston, built it in 1906-07 at a reported cost of $250,000. The architect is unknown. It was listed for its link to the Sanborn family and for its design, which the nomination calls locally unique and one of few Boston-area houses with mannerist traits. Sanborn sold in 1921; later owners included the Downes family, and from 1947 the Archdiocese of Boston used it for a nuns' residence and school. The town now owns the property.","period_of_significance":"1906-07","architect_builder":"unknown","architectural_style":"Mannerist interpretation of the Beaux Arts style","criteria":["B","C"],"status_note":"Owned by the Town of Winchester and marked occupied, with educational and government uses; a 1947 school building on the grounds is non-contributing.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:11:55.01701-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/56/7956/63795656/content/electronic-records/rg-079/NPS_MA/81000286.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/81000286/8d8d20c561-800.webp","url_1600":"https://nationalhistoricalregister.com/media/81000286/8d8d20c561-1600.webp","licence":"CC BY-SA 4.0","author":"User:Magicpiano","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:WinchesterMA_SanbornHouse.jpg\" rel=\"noopener\">User:Magicpiano</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:WinchesterMA_SanbornHouse.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/63795656","wikipedia":"https://en.wikipedia.org/wiki/Sanborn_House_(Winchester,_Massachusetts)","wikidata":"https://www.wikidata.org/wiki/Q7415589"},"indexable":true,"url":"https://nationalhistoricalregister.com/massachusetts/middlesex-county/sanborn-house-81000286/"}