{"nrhp_refnum":"89001490","name":"Hammond, Ephraim, House","other_names":[],"category":"building","location":{"address":"265 Beaver St.","address_restricted":false,"city":"Waltham","county":"Middlesex County","state":"MA","lat":42.38631918100003,"lon":-71.21356583799997,"geom_source":"nps_gis"},"listed_date":"1989-09-28","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Community Planning and Development","Architecture","Social History"],"significance_levels":["local"],"summary":{"what_it_is":"A c.1775 Georgian farmhouse at 265 Beaver Street, Waltham, Massachusetts, probably built by Ephraim Hammond, with a mid-19th-century barn. The house was moved to its present site in the late 19th century.","why_significant":"It is the only side hall plan Georgian period house in Waltham and one of a handful of mid-18th century dwellings in the community. It is also tied to Waltham's agricultural and estate history through the Hammond family and the Warren family's Cedar Hill estate. Its long association with the Massachusetts Girl Scouts, who restored it in the 1920s, adds social history significance.","narrative":"Built around 1775, this clapboard farmhouse at 265 Beaver Street in Waltham is the city's only side hall plan Georgian house. It has a two-story main block, a three-bay facade, an end gable roof, and ells projecting from the east and west walls, with 6/6 sash windows and an Italianate rear porch. Local history credits it to Ephraim Hammond, whose family had held the surrounding land since the mid-1600s. The house originally stood on Pidgeon Hill and was moved in the late 19th century. Later it served as the coachman's house on the Warren family's Cedar Hill estate. Cornelia Otis Warren left the estate to a charitable corporation, and the Massachusetts Girl Scouts restored the house in the 1920s, uncovering early hinges, hand-cut kitchen beams, and a large fireplace. A mid-19th-century barn is included. The property was listed for its architecture, its agricultural and estate history, and its Girl Scout associations.","period_of_significance":null,"architect_builder":"Architect unknown; probably built by Ephraim Hammond","architectural_style":"Georgian","criteria":["A","C"],"status_note":"Condition described as good; owned by the Girl Scouts since the 1920s restoration, with a large barn on the property.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:13:01.667022-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/53/7919/63791953/content/electronic-records/rg-079/NPS_MA/89001490.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/89001490/35ca230eca-800.webp","url_1600":"https://nationalhistoricalregister.com/media/89001490/35ca230eca-1600.webp","licence":"CC BY-SA 4.0","author":"User:Magicpiano","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:WalthamMA_EphraimHammondHouse.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:WalthamMA_EphraimHammondHouse.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/63791953","wikipedia":"https://en.wikipedia.org/wiki/Ephraim_Hammond_House","wikidata":"https://www.wikidata.org/wiki/Q5382274"},"indexable":true,"url":"https://nationalhistoricalregister.com/massachusetts/middlesex-county/hammond-ephraim-house-89001490/"}