{"nrhp_refnum":"93000701","name":"Harbor House","other_names":["George C. Case Estate"],"category":"district","location":{"address":"Spring Hollow Rd.","address_restricted":false,"city":"Nissequogue","county":"Suffolk County","state":"NY","lat":40.897844940000056,"lon":-73.17737147000818,"geom_source":"nps_gis"},"listed_date":"1993-08-09","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Entertainment/Recreation","Architecture","Social History"],"significance_levels":["local"],"summary":{"what_it_is":"Harbor House, also called the George C. Case Estate, is a nearly 22-acre waterfront estate on the west shore of Stony Brook Harbor in Nissequogue, Suffolk County, New York. The main house was built around 1910 to designs by Ford, Butler and Oliver.","why_significant":"The estate is presented as a distinguished, representative example of the turn-of-the-century Stony Brook Harbor estate type. It is tied to the Smith family social circle and was carved from an earlier estate parcel. The house is a large, well-detailed country house combining Dutch Colonial Revival, Queen Anne, Shingle and Bungalow elements, and it keeps its naturalistic waterfront setting.","narrative":"Harbor House is a roughly 22-acre estate on the lower west shore of Stony Brook Harbor in Nissequogue, built around 1910 for George C. Case. The large shingled house has a massive gambrel roof and was designed by the firm Ford, Butler and Oliver. Its design mixes Dutch Colonial Revival features with touches of the Queen Anne, Shingle and Bungalow styles, and it follows the country house pattern with wide porches, a service wing, and rooms arranged to face the water. A carriage barn, a well house, a formal garden and wooded grounds complete the property, which keeps its original boundary and much of its early landscape. The estate matters as an example of the harbor's turn-of-the-century estate life and as an early work of the architects. Lawrence Smith Butler, a principal in the firm, came from the family that developed the neighboring estate in 1878, from which this parcel was divided.","period_of_significance":"c1910","architect_builder":"Ford, Butler and Oliver","architectural_style":"Late Nineteenth and Early Twentieth Century Revivals","criteria":[],"status_note":"Described as retaining a high degree of exterior and interior integrity; still used 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 02:51:50.909107-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/93000701.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/93000701/394109b9f8-800.webp","url_1600":"https://nationalhistoricalregister.com/media/93000701/394109b9f8-1600.webp","licence":"CC BY-SA 4.0","author":"DanTD","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Driveway_to_Harbor_House;_Nissequogue,_NY.jpg\" rel=\"noopener\">DanTD</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:Driveway_to_Harbor_House;_Nissequogue,_NY.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75314985","wikipedia":"https://en.wikipedia.org/wiki/Harbor_House_(Nissequogue,_New_York)","wikidata":"https://www.wikidata.org/wiki/Q5654618"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/suffolk-county/harbor-house-93000701/"}