This article lists the oldest extant buildings in Iowa, including extant buildings and structures constructed during pre-statehood period of Iowa history. Only buildings built prior to 1850 are suitable for inclusion on this list, or the building must be the oldest of its type.

In order to qualify for the list, a structure must: be a recognizable building (defined as any human-made structure used or intended for supporting or sheltering any use or continuous occupancy); incorporate features of building work from the claimed date to at least in height and/or be a listed building.

This consciously excludes ruins of limited height, roads and statues. Bridges may be included if they otherwise fulfill the above criteria. Dates for many of the oldest structures have been arrived at by radiocarbon dating or dendrochronology and should be considered approximate. If the exact year of initial construction is estimated, it will be shown as a range of dates.

List of oldest buildings

BuildingImage Location First built UseNotes Louis Arriandeaux Log House Dubuque, Iowa ca. 1827 Residence Oldest house in Iowa.https://www.hmdb.org/m.asp?m=43131 Located on the grounds of the Mathias Ham HouseStringtown HouseDavis County, Iowa1832ResidenceOldest house in Davis CountyClaim HouseDavenport, Iowaca. 1832-1833ResidenceOldest building in DavenportRhodham Bonnifield HouseFairfield, Iowa1838Residence St. Anthony's Catholic Church (Davenport, Iowa) Davenport, Iowa 1838 Church Oldest church building in use in IowaAntoine LeClaire, the First Proprietor of Davenport The Annals of Iowa 23(1941), 106-107Alexander Brownlie HouseLong Grove, Iowa1839ResidencePaton and Hannah Wilson HouseSalem, Iowa1839ResidenceRhoda Smalley HouseMuscatine, Iowaca. 1839ResidenceI.O.O.F. HallBentonsport, Iowaca. 1840sFraternity HallAbiathar and Nancy White HouseBurlington, Iowaca. 1840ResidenceLargest Federal-style building in BurlingtonAlexander Young CabinWashington, Iowaca. 1840ResidenceCowles HouseBentonsport, Iowaca. 1840ResidenceHenderson Lewelling HouseSalem, Iowa1840Residence Kuhl House Iowa City, Iowa 1840 Residence Now home to University Press at University of Iowa"10 Historic University of Iowa Buildings" Mar. 16 https://www.press-citizen.com/picture-gallery/news/education/2014/03/16/10-historic-university-of-iowa-buildings/6482651/Fort AtkinsonFort Atkinson, Iowaca. 1840-1842Military FortBeers and St. John Company Coach Innnear West Liberty, Iowa1842Inn Iowa Old Capitol Building Iowa City, Iowa 1842 Government "10 Historic University of Iowa Buildings" Mar. 16 https://www.press-citizen.com/picture-gallery/news/education/2014/03/16/10-historic-university-of-iowa-buildings/6482651/James Brown HouseRiverdale, Iowa1842ResidenceLee County CourthouseFort Madison, Iowa1842GovernmentStone AcademySolon, Iowa1842SchoolCollins-Bond HouseSalem, Iowa1843ResidenceJames Nealey HouseMuscatine, Iowaca. 1843ResidencePotter's MillBellevue, Iowa1843Commercial/ MillThomas F. and Nancy Tuttle HousePella, Iowa1843ResidenceOldest building in PellaVan Buren County CourthouseKeosauqua, Iowa1843CourthouseAunty Green HotelBonaparte, Iowa1844ResidenceMoyce–Steffens HouseFort Madison, Iowa1844ResidencePlum GroveIowa City, Iowa1844ResidenceFranklin Pearson HouseKeosauqua, Iowa1845ResidenceJackson County CourthouseBellevue, Iowa1845CourthouseTheodore Niemann HouseJackson, County, Iowa1845ResidenceWilliam Fordney HouseBurlington, Iowa1845ResidenceWindrem HouseIowa City, Iowaca. 1845-1850ResidenceGehlen House and BarnMuscatine, Iowaca. 1846Residence and barnIowa's oldest barnCouch-Carskaddan HouseMuscatine, Iowaca. 1846Residence Larnerd Case House Des Moines, Iowa 1846 Residence Barbara Beving Long; Ralph J. Christian. "Larnerd Case House". National Park Service. Retrieved 2017-10-12Mason House InnBentonsport, Iowa1846Residence/ InnParadise FarmBellevue, Iowa1846ResidenceTaylor–Van Note HouseCedar Rapids, Iowa1846ResidenceBaptist ChurchSperry, Iowa1847ChurchBuffalo Bill Cody HomesteadButler Township, Scott County, Iowa1847ResidenceHancock HouseBentonsport, Iowa1847ResidenceJacob Wentz HouseIowa City, Iowa1847ResidenceAmbrose Fulton Log CabinDavenport, Iowa1848ResidenceDominie Henry P. Scholte HousePella, Iowa1848ResidenceIsaac R. and Charlotte Mauck House Muscatine, Iowaca. 1848ResidenceJesse and Mary Farley HouseDubuque, Iowaca. 1848ResidenceJonathan Clark Conger HouseWashington, Iowaca. 1848ResidenceLynnville Mill and DamLynnville, Iowa1848Commercial/ MillPine Creek GristmillMuscatine County, Iowa1848Commercial, MillPioneer Log CabinNewton, Iowa1848ResidenceSpring SideBellevue, Iowa1848ResidenceGen. Samuel R. Curtis HouseKeokuk, Iowa1849ResidenceLamm-Pollmiller FarmsteadSalem, Iowaca. 1849ResidenceRose HillIowa City, Iowa1849ResidenceUpper ParadiseBellevue, Iowa1849ResidenceWestern HotelHoly Cross, Iowaca. 1849-1850Residence

See also National Register of Historic Places listings in Iowa History of Iowa Oldest buildings in the United States

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