{"nrhp_refnum":"02000100","name":"Gunderson Historic District","other_names":["Second Gunderson Development"],"category":"district","location":{"address":"Roughly bounded by Madison St., Harrison St. Gunderson St., and S. Ridgeland Ave.","address_restricted":false,"city":"Oak Park","county":"Cook County","state":"IL","lat":41.87622321850006,"lon":-87.78555818205359,"geom_source":"nps_gis"},"listed_date":"2002-03-01","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Community Planning and Development","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A residential historic district on the south side of Oak Park, Cook County, Illinois, roughly bounded by Madison Street, Harrison Street, Gunderson Street and South Ridgeland Avenue. It holds about 230 buildings, mostly single-family homes plus 22 two-flats, built 1906-1920 by developer S.T. Gunderson and Sons.","why_significant":"The district is the second Gunderson development in Oak Park, a speculative subdivision of middle-class housing built by one developer. It has a consistent group of American Four Square houses with Colonial Revival, Arts and Crafts or Prairie influences, along with Arts and Crafts brick two-flats. It also shows early twentieth-century mass marketing, with advertising brochures and newspaper ads. Streetscape features such as lot size, setbacks and massing remain intact.","narrative":"This residential district on Oak Park's south side was built between 1906 and 1920 by the developer S.T. Gunderson and Sons. It contains about 230 buildings, 228 of them contributing. Most are single-family frame houses in the American Four Square form, individualized with Colonial Revival, Arts and Crafts or Prairie School detailing. Twenty-two brick Arts and Crafts two-flats, with clay tile roofs and limestone trim, line South Ridgeland and South Cuyler Avenues. The firm sold the homes to middle-class first-time buyers through brochures and newspaper advertising, promising features such as stone basements, oak trim and art glass windows. Lots are uniformly 40 by 130 feet, with equal setbacks, alleys and tree-lined parkways. Many porches were enclosed in the 1920s and some houses have artificial siding, yet the massing, window patterns and detailing remain largely intact. The area was listed as an example of a planned, speculative suburban development and its marketing methods.","period_of_significance":null,"architect_builder":"S.T. Gunderson and Sons (developer/builder)","architectural_style":"American Four-Square; Arts & Crafts; Prairie School; Colonial Revival","criteria":[],"status_note":"Still in residential use, with single and multiple dwellings; the district remains middle-class. Some porches were enclosed in the 1920s and artificial siding was added to many homes, but massing and fenestration remain intact.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:37.183035-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/78/8925/28892578/content/electronic-records/rg-079/NPS_IL/02000100.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/02000100/c71505733e-800.webp","url_1600":"https://nationalhistoricalregister.com/media/02000100/c71505733e-1600.webp","licence":"CC BY-SA 3.0","author":"Teemu08 at en.wikipedia","credit_html":"Teemu08 at en.wikipedia, CC BY-SA 3.0, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Gunderson_HD.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/28892578","wikipedia":"https://en.wikipedia.org/wiki/Gunderson_Historic_District","wikidata":"https://www.wikidata.org/wiki/Q102428738"},"indexable":true,"url":"https://nationalhistoricalregister.com/illinois/cook-county/gunderson-historic-district-02000100/"}