{"nrhp_refnum":"74000552","name":"Marston, George W., House","other_names":[],"category":"building","location":{"address":"3525 7th Ave.","address_restricted":false,"city":"San Diego","county":"San Diego County","state":"CA","lat":32.74136240900003,"lon":-117.15798118699996,"geom_source":"nps_gis"},"listed_date":"1974-12-16","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Landscape Architecture","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A large two-and-a-half-story brick-veneer and frame house at 3525 7th Avenue in San Diego, California, overlooking Balboa Park. It was designed in 1904 by Irving John Gill of the Hebbard and Gill partnership.","why_significant":"The nomination argues the house was built during the formative years of Gill's practice and anticipates his later work through its simple detailing, lack of ornament and emphasis on comfort. It also marks a transition, retaining the eastern brick gabled form. It is further tied to George W. Marston, a merchant and civic leader who shaped modern San Diego.","narrative":"Overlooking Balboa Park in San Diego, this L-shaped house at 3525 7th Avenue was designed in 1904 by architect Irving John Gill of the firm Hebbard and Gill for merchant George W. Marston. Brick veneer covers the first floor, with frame walls and plaster above, under gabled roofs with sweeping eaves. A porte-cochere marks the entrance, and a brick-tiled terrace and pergola run along the south side. Inside, a broad central stairway lit by large north windows organizes the plan. The house is notable as an early work from Gill's formative years, showing the simple detailing, absence of ornament and attention to comfort that characterized his later buildings. On the third floor he first used slab doors and flat board moldings flush with the wall. The nomination also stresses Marston's role in San Diego's civic life, including the library, YMCA, Balboa Park and Presidio Park. The house remains largely unaltered, with its original landscaping.","period_of_significance":"20th Century (specific date 1904)","architect_builder":"Irving John Gill (Hebbard and Gill); later alterations by William Templeton Johnson","architectural_style":null,"criteria":[],"status_note":"Described as essentially unaltered since construction, with minor changes limited to window enlargements on the south side; listed as a private residence and occupied.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:32.109073-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/74000552.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/74000552/4cb14ce1c4-800.webp","url_1600":"https://nationalhistoricalregister.com/media/74000552/4cb14ce1c4-1600.webp","licence":"CC BY-SA 3.0","author":"No machine-readable author provided. Dananderson assumed (based on copyright claims).","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:George_Marston_House.jpg\" rel=\"noopener\">No machine-readable author provided. Dananderson assumed (based on copyright claims).</a>, <a href=\"http://creativecommons.org/licenses/by-sa/3.0/\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:George_Marston_House.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123860919","wikipedia":"https://en.wikipedia.org/wiki/George_W._Marston_House","wikidata":"https://www.wikidata.org/wiki/Q5545691"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/san-diego-county/marston-george-w-house-74000552/"}