{"nrhp_refnum":"90000220","name":"Hopkinson, George, House","other_names":[],"category":"building","location":{"address":"362 Main St.","address_restricted":false,"city":"Groveland","county":"Essex County","state":"MA","lat":42.761015626000074,"lon":-71.03451786299996,"geom_source":"nps_gis"},"listed_date":"1990-03-09","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Historic - Non-Aboriginal","Architecture"],"significance_levels":["state"],"summary":{"what_it_is":"A two-and-a-half story, single-cell First Period house at 362 Main Street in Groveland, Essex County, Massachusetts, built about 1716 by an unknown builder, across the street from the Merrimack River.","why_significant":"The house keeps its original single-cell front facade and First Period plank frame, which makes it a rare survivor of a once-common house type in Massachusetts. Plank framing is an uncommon alternative in Massachusetts Bay, and the hidden frame may yield information about late First Period framing and decoration.","narrative":"Built around 1716 on Main Street in Groveland, this two-and-a-half story house began as a single-cell, First Period dwelling one bay deep. In the 18th century a rear lean-to and a long, narrow, one-and-a-half story side ell were added. During the Federal period the lean-to was raised, the chimney remodeled and a new roof built, and the front door and windows received Federal surrounds with splayed lintels. Most of the original plank frame lies behind later boxing and plaster. Evidence of plank construction includes mortises in the exposed rear girt for two-inch planks, chamfered summer beam with cove stops in a second-floor closet, and old planks reused in the cellar stair partition. The house was listed for its architecture because it keeps its original single-cell facade, a type once common but now almost vanished in Massachusetts. It is also valued for the information its plank frame, an uncommon technique in the region, may hold. It remains a single-family residence.","period_of_significance":"1700-1749","architect_builder":null,"architectural_style":"Colonial; First Period","criteria":["C","D"],"status_note":"Described as in good condition and still used as a single-dwelling residence.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:13:03.521103-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/29/7898/63789829/content/electronic-records/rg-079/NPS_MA/90000220.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/90000220/60fde3af47-800.webp","url_1600":"https://nationalhistoricalregister.com/media/90000220/60fde3af47-1600.webp","licence":"CC BY 3.0","author":"John Phelan","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:George_Hopkinson_House,_Groveland_MA.jpg\" rel=\"noopener\">John Phelan</a>, <a href=\"https://creativecommons.org/licenses/by/3.0\" rel=\"license noopener\">CC BY 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:George_Hopkinson_House,_Groveland_MA.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/63789829","wikipedia":"https://en.wikipedia.org/wiki/George_Hopkinson_House","wikidata":"https://www.wikidata.org/wiki/Q5540725"},"indexable":true,"url":"https://nationalhistoricalregister.com/massachusetts/essex-county/hopkinson-george-house-90000220/"}