{"nrhp_refnum":"78001894","name":"Tianderah","other_names":[],"category":"building","location":{"address":"Off NY 51","address_restricted":false,"city":"Gilbertsville","county":"Otsego County","state":"NY","lat":42.463719017000045,"lon":-75.31494244378082,"geom_source":"nps_gis"},"listed_date":"1978-11-02","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Landscape Architecture","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"Tianderah is a massive stone and shingle summer house on a hilltop estate of about 33-35 acres outside Gilbertsville, Otsego County, New York. It was commissioned in 1885 by N.C. Chapman and designed by Boston architect William Ralph Emerson.","why_significant":"The nomination presents it as a distinctive, unusual work by Emerson, a pioneer of the shingle style, and one of only two all-masonry houses he designed. It blends colonial vernacular forms with Richardsonian Romanesque, English Renaissance and Gothic Revival motifs. It is also valued as a fine, virtually unchanged example of late nineteenth-century estate architecture and a local landmark.","narrative":"Perched on a hilltop above Gilbertsville in Otsego County, Tianderah is a large summer house of rough-faced blue-stone and shingle, set within a landscaped estate of roughly thirty-five acres that also holds a carriage shed and a carriage house. St. Louis businessman N.C. Chapman, who had spent boyhood summers in the village, commissioned it in 1885 from Boston architect William Ralph Emerson. Local materials were used, about fifty laborers worked on it, and many skilled workers came from the Boston area. The design combines a steep gambrel roof drawn from New England farmhouses with Roman-arched dormers and porch, colonial-style interior woodwork and a Gothic-inspired entrance porch. Emerson designed only two all-masonry houses, and this one is regarded as a distinctive example of his shingle-style work. The house has changed little since construction, apart from heating and lighting upgrades and asphalt roof shingles, and it remains a recognized local landmark.","period_of_significance":"1885-1887","architect_builder":"William Ralph Emerson (architect); John H. Watson (builder); Ernest W. Bowditch (landscaping firm)","architectural_style":"Shingle style, with colonial, Richardsonian Romanesque, English Renaissance and Gothic Revival elements","criteria":[],"status_note":"Described as virtually unchanged in appearance and setting; the only noted alterations are heating and lighting improvements and asphalt shingles over the original wooden shingles.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:39.475931-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/78001894.pdf"},"photo":null,"district":{"nrhp_refnum":"82001232","name":"Gilbertsville Historic District (Boundary Increase)","url":"https://nationalhistoricalregister.com/districts/new-york/gilbertsville-historic-district-boundary-increase-82001232/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75320994","wikipedia":"https://en.wikipedia.org/wiki/Tianderah","wikidata":"https://www.wikidata.org/wiki/Q7800166"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/otsego-county/tianderah-78001894/"}