{"nrhp_refnum":"02001650","name":"Dederer Stone House-Stonehurst","other_names":[],"category":"building","location":{"address":"82 Rockland Rd.","address_restricted":false,"city":"Orangetown","county":"Rockland County","state":"NY","lat":41.03157678600007,"lon":-73.92190791499996,"geom_source":"nps_gis"},"listed_date":"2002-12-31","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A two and one-half story Gothic Revival stone house at 82 Rockland Road in Sparkill, Orangetown, Rockland County, New York, built in 1865 by Isaac M. Dederer on a ten-acre lot with a barn and hitching post.","why_significant":"The nomination argues the house is an outstanding example of mid-nineteenth century lower Hudson Valley Gothic Revival architecture, embodying Picturesque movement ideas associated with A.J. Downing, Calvert Vaux and others. It is described as one of the few fully articulated Picturesque examples in this part of the Hudson Valley, with remarkable integrity. It is also a local landmark reflecting Orangetown's nineteenth century growth.","narrative":"Stonehurst is a two and one-half story stone house at 82 Rockland Road in Sparkill, Orangetown, built in 1865 by Isaac M. Dederer, as a date stone records. Its T-shaped plan is built of local granite with dressed sandstone trim, topped by jerkin-headed slate roofs with pierced bargeboards in quatrefoil and star patterns. Pointed-arch windows hold leaded diamond-pane sash. Inside, a side hall plan includes a paneled stair balustrade, a marble fireplace in the drawing room, and original flooring, moldings and doors. A two-story barn and a stone hitching post stand on the ten-acre lot. The house is significant as a fully developed example of Picturesque, Gothic Revival design, reflecting ideas promoted by A.J. Downing, Alexander Jackson Davis and Calvert Vaux. No architect is documented, but regional designer Daniel Topping Atwood is suggested because of similarities to a chapel he designed nearby. The house and setting retain high integrity and serve as a local landmark of Orangetown's nineteenth century growth.","period_of_significance":"1865","architect_builder":"Isaac M. Dederer (builder); no architect attributed, though Daniel Topping Atwood is suggested as a possible link","architectural_style":"Mid-19th Century/Gothic Revival","criteria":["C"],"status_note":"Retains a remarkable degree of integrity; in use as a single dwelling.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:51:54.122314-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/02001650.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/02001650/a56b6eb0b3-800.webp","url_1600":"https://nationalhistoricalregister.com/media/02001650/a56b6eb0b3-1600.webp","licence":"CC BY-SA 4.0","author":"JERRYE &amp; ROY KLOTZ, M.D.","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:DEDERER_STONE_HOUSE,_ORANGETOWN,_ROCKLAND_COUNTY,_NY.jpg\" rel=\"noopener\">JERRYE &amp;amp; ROY KLOTZ, M.D.</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:DEDERER_STONE_HOUSE,_ORANGETOWN,_ROCKLAND_COUNTY,_NY.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75321436","wikipedia":"https://en.wikipedia.org/wiki/Dederer_Stone_House-Stonehurst","wikidata":"https://www.wikidata.org/wiki/Q5249772"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/rockland-county/dederer-stone-house-stonehurst-02001650/"}