{"nrhp_refnum":"88000001","name":"House at 65 Twentieth Avenue","other_names":[],"category":"building","location":{"address":"65 Twentieth Av.","address_restricted":false,"city":"Sea Cliff","county":"Nassau County","state":"NY","lat":40.845885019000036,"lon":-73.65213371999994,"geom_source":"nps_gis"},"listed_date":"1988-02-18","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Entertainment/Recreation","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A two-story clapboard building at 65 20th Avenue in the village of Sea Cliff, Nassau County, New York, built in 1893 as a carriage house for original owner Eliza Lockwood and later converted to a residence.","why_significant":"It is presented as a distinctive example of Sea Cliff's late nineteenth century resort architecture. Its conversion from carriage barn to summer house around 1900 reflects the demand for seasonal housing when the village was a popular seaside resort near New York City. It displays local Victorian-era features such as a symmetrical composition, broad gable roof, wraparound porch and intricate wooden decoration.","narrative":"Built in 1893 as a carriage house for Eliza Lockwood, this two-story clapboard building at 65 20th Avenue in Sea Cliff was turned into a summer residence around 1900 and became a year-round home in 1946. It sits on a small wooded lot on a steep hillside with a view west toward Hempstead Harbor. The gable-roofed structure rests on a raised brick foundation and carries a tent-roofed cupola, an original feature. The conversion added a wraparound porch with turned posts, scroll-sawn braces and lattice base, plus geometric trusswork on the gable ends. The only exterior alteration was a garage added on the west side in 1950. The property matters because it shows how Sea Cliff grew as a seaside resort in the late nineteenth century, when seasonal housing was in short supply. The conversion was so thorough that the original use is hard to recognize, and the building keeps the look of a picturesque turn-of-the-century summer house.","period_of_significance":null,"architect_builder":null,"architectural_style":"Victorian-era resort residential architecture (late nineteenth century)","criteria":[],"status_note":"Used as a private residence; converted to a summer house about 1900 and a year-round home in 1946. Exterior retains its historic appearance, with a garage added under the porch in 1950.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:44.85339-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/88000001.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/88000001/b40035eced-800.webp","url_1600":"https://nationalhistoricalregister.com/media/88000001/b40035eced-1600.webp","licence":"CC BY-SA 4.0","author":"Antony-22","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:65_Twentieth_Avenue_2015.JPG\" rel=\"noopener\">Antony-22</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:65_Twentieth_Avenue_2015.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75313759","wikipedia":"https://en.wikipedia.org/wiki/House_at_65_Twentieth_Avenue","wikidata":"https://www.wikidata.org/wiki/Q5914440"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/nassau-county/house-at-65-twentieth-avenue-88000001/"}