{"nrhp_refnum":"78001863","name":"Old Nassau County Courthouse","other_names":[],"category":"building","location":{"address":"1550 Franklin Ave.","address_restricted":false,"city":"Garden City","county":"Nassau County","state":"NY","lat":40.738000043000056,"lon":-73.63962868299996,"geom_source":"nps_gis"},"listed_date":"1978-02-17","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Politics/Government","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A two-story reinforced concrete courthouse at 1550 Franklin Avenue in Garden City, Nassau County, New York, built in 1900 to a design by William B. Tubby, with additions in 1916 and 1926.","why_significant":"It served as the seat of Nassau County government from the county's creation until the end of World War II. It is also an early example of reinforced concrete construction on Long Island and a notable neoclassical civic building, with a gilded dome and large east portico.","narrative":"Old Nassau County Courthouse sits on a five-acre landscaped plot at Franklin Avenue and Old Country Road in Garden City. Designed by William B. Tubby of Glen Cove and completed in 1900, it was built of formed reinforced concrete stuccoed to imitate stone, with quoins, cornices and window moldings in concrete. A massive two-story portico faces east, and a gilded dome with iron cresting crowns the building. Nassau County was created from part of Queens County in 1899, and its supervisors funded the courthouse and jail on land donated by the Garden City Company. Governor Theodore Roosevelt dedicated the cornerstone in July 1900. The building housed courts and county offices until the end of World War II, with wings added in 1916 and 1926 to meet growing needs. After a new government complex was built in the early 1960s, the old courthouse was converted entirely to county offices, preserving its role as the original county seat and a civic landmark.","period_of_significance":"1900, with additions, to 1944","architect_builder":"William B. Tubby (architect); Edward Roche (construction contractor)","architectural_style":"Neoclassical","criteria":[],"status_note":"Occupied and in use as county government office space; condition listed as good, with some interior alterations.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:38.666019-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/78001863.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/78001863/9a9c167d93-800.webp","url_1600":"https://nationalhistoricalregister.com/media/78001863/9a9c167d93-1600.webp","licence":"CC BY-SA 3.0","author":"DanTD","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Old_Nassau_County_Court_House.JPG\" rel=\"noopener\">DanTD</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:Old_Nassau_County_Court_House.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75319163","wikipedia":"https://en.wikipedia.org/wiki/Old_Nassau_County_Courthouse_(New_York)","wikidata":"https://www.wikidata.org/wiki/Q7084590"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/nassau-county/old-nassau-county-courthouse-78001863/"}