{"nrhp_refnum":"07000307","name":"Hewlett-Packard House and Garage","other_names":["Birthplace to Silicon Valley"],"category":"building","location":{"address":"367 Addison Ave.","address_restricted":false,"city":"Palo Alto","county":"Santa Clara County","state":"CA","lat":37.443030744000055,"lon":-122.15436630199997,"geom_source":"nps_gis"},"listed_date":"2007-04-20","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering"],"significance_levels":["national"],"summary":{"what_it_is":"A two-story Craftsman-style house built in 1905 at 367 Addison Avenue, Palo Alto, California, with a rear garage and shed, next to the Professorville Historic District.","why_significant":"The property is the birthplace of the Hewlett-Packard Company, where William Hewlett and David Packard lived and worked from 1938 to 1940 and created their first successful products. It is significant under Criterion A for early engineering innovations that began a regional technological revolution, and under Criterion B for its association with Hewlett and Packard. The company later became the nucleus for the Stanford Research Park and Silicon Valley.","narrative":"This two-story Craftsman house at 367 Addison Avenue in Palo Alto was built in 1905 and sits beside the Professorville Historic District. It has wood shingle siding, a hipped roof with broad eaves, and a front porch with Tuscan columns. A board-and-batten garage and a shingled shed stand at the rear. In the summer of 1938, David and Lucile Packard and William Hewlett rented the ground-floor flat, garage and shed. Packard lived in the flat while Hewlett lived in the shed, and the garage served as a workshop. Between 1938 and 1940 the two men created their first successful products and formally established the Hewlett-Packard Company. The firm later helped anchor the Stanford Research Park and the growth of Silicon Valley. The house had been divided into several apartments and heavily altered over the decades. A 2005 rehabilitation returned the exterior and interiors to their 1938 appearance. It now serves as a conference center and hosts occasional tours.","period_of_significance":"1938-1940","architect_builder":"Unknown","architectural_style":"Late 19th and Early 20th Century American Movements / Bungalow/Craftsman","criteria":["A","B"],"status_note":"Rehabilitated in 2005 and restored to its 1938 appearance. Currently used as a corporate conference center with a residential apartment upstairs, and periodically opened for tours and special events.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:29.654122-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/07000307.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/07000307/af38d91ec9-800.webp","url_1600":"https://nationalhistoricalregister.com/media/07000307/af38d91ec9-1600.webp","licence":"CC BY-SA 3.0","author":"harshalgawande","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:HP_Garage_2013-09-20_20-48-06.jpg\" rel=\"noopener\">harshalgawande</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:HP_Garage_2013-09-20_20-48-06.jpg"},"district":{"nrhp_refnum":"80000861","name":"Professorville Historic District","url":"https://nationalhistoricalregister.com/districts/california/professorville-historic-district-80000861/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123861699","wikipedia":"https://en.wikipedia.org/wiki/HP_Garage","wikidata":"https://www.wikidata.org/wiki/Q2720242"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/santa-clara-county/hewlett-packard-house-and-garage-07000307/"}