# List of the oldest buildings in Oregon

This article lists the oldest extant buildings in Oregon, including extant buildings and structures constructed prior to and during the United States rule over Oregon. Only buildings built prior to 1860 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 1.5 metres (4.9 ft) 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

| Building | Location | First built | Use | Notes |
| Molalla Log House | near Canby, Oregon | 1790s | Residence | Unknown who constructed the structure (possibly trappers, Native American or Russians). Building was moved to a new site in 2021 in the Hopkins Demonstration Forest. |
| Jason Lee House | Salem, Oregon | 1841 | Residence | One of the oldest frame building remaining in the state |
| Methodist Mission Parsonage | Salem, Oregon | 1841 | Residence | One of the oldest frame building remaining in the state |
| Francis Ermatinger House | Oregon City, Oregon | 1843 | Residence | Long thought to be the oldest house in Clackamas County |
| Delaney–Edwards House | Salem, Oregon | 1845 | Residence | Currently a Bed & Breakfast |
| St. Paul Roman Catholic Church (St. Paul, Oregon) | St. Paul, Oregon | 1846 | Church | Oldest church in Oregon and oldest brick building in Pacific Northwest |
| McLoughlin House National Historic Site | Oregon City, Oregon | 1846 | Residence | Home of John McLoughlin a leader of the Hudson's Bay Company and the "father of Oregon" |
| John D. Boon House | Salem, Oregon | 1847 | Residence | |
| Butteville Jail | Champoeg, Oregon | 1848 | Jail | |
| Silas Jacob N. Beeks House | Forest Grove, Oregon | 1848 | Residence | |
| Watson–Price Farmstead Barn | Benton County, Oregon | 1848 | Barn | |
| William L. Holmes House | Oregon City, Oregon | 1848 | Residence | |
| Dr. Forbes Barclay House | Oregon City, Oregon | 1849 | Residence | |
| Thomas and Walter Monteith House | Albany, Oregon | 1849 | Residence | |
| Dayton Common School | Dayton, Oregon | 1850 | School | |
| Granville H. Baber House | Linn County, Oregon | 1850 | Residence | |
| Malcolm A. Moody House | The Dalles, Oregon | 1850 | Residence | Oldest house in The Dalles |
| Morton Matthew McCarver House | Oregon City, Oregon | 1850 | Residence | |
| Tualatin Academy | Forest Grove, Oregon | 1850 | University Building | Oldest university building in the state |
| White–Kellogg House | Oregon City, Oregon | 1850 | Residence | |
| Capt. John C. Ainsworth House | Oregon City, Oregon | 1851 | Residence | |
| Hamilton Campbell House | Marion County, Oregon | 1851 | Residence | |
| Knighton House | St. Helens, Oregon | 1851 | Residence | Oldest house in Columbia County |
| Levi Hagey House | Dundee, Oregon | 1851 | Residence | |
| Matthew Murphy House | St. Paul, Oregon | 1851 | Residence | |
| Hiram Brown House | Astoria, Oregon | 1852 | Residence | A part of the Shively–McClure Historic District |
| Mountain House | Ashland, Oregon | 1852 | Residence | |
| Robert Newell House | Champoeg, Oregon | 1852 | Residence | |
| Watson–Price Farmstead | Benton County, Oregon | 1852 | Residence | |
| Amos Cook House | Dayton, Oregon | 1853 | Residence | |
| John Phillips House | Polk County, Oregon | 1853 | Residence | |
| Lane County Clerk's Building | Eugene, Oregon | 1853 | Residence | |
| Washington County Jail | Washington County, Oregon | 1853 | Jail | |
| West Union Baptist Church | Hillsboro, Oregon | 1853 | Church | |
| Andrew Jackson and Sarah Jane Masters House | Aloha, Oregon | 1854 | Residence | |
| Creed Floed House | Roseburg, Oregon | 1854 | Residence | |
| Jacob Conser House | Jefferson, Oregon | 1854 | Residence | |
| Daniel and Catherine Christian House | Eugene, Oregon | 1855 | Residence | Oldest house in Eugene |
| James Mechlin Anderson House | Marion County, Oregon | 1855 | Residence | |
| John Fiechter House | Corvallis, Oregon | 1855 | Residence | |
| Patrick F. McManus House | Phoenix, Oregon | 1855 | Residence | |
| Tigard-Rogers House | Portland, Oregon | 1855 | Residence | Oldest house in Portland |
| Alvin T. Smith House | Forest Grove, Oregon | 1854-1856 | Residence | |
| Bybee–Howell House | Sauvie Island, Oregon | 1856 | Residence | |
| Charles Applegate House | Yoncalla, Oregon | 1856 | Residence | |
| Fort Yamhill Blockhouse | Dayton, Oregon | 1856 | Blockhouse | |
| Hiram A. Straight House | Oregon City, Oregon | 1856 | Residence | |
| Horace Baker Log Cabin | Carver, Oregon | 1856 | Residence | |
| Mt. Pleasant Presbyterian Church | Linn County, Oregon | 1856 | Church | |
| Burford-Stanley House | Monmouth, Oregon | 1857 | Residence | |
| Charles Gaylord House | Corvallis, Oregon | 1857 | Residence | |
| Fort Dalles Surgeon's Quarters | The Dalles, Oregon | 1857 | Residence | |
| Fort Hoskins Commander's House | Benton County, Oregon | 1857 | Residence | Moved back to the fort from Pedee Creek Road; only surviving structure of the fort |
| Hallock–McMillan Building | Portland, Oregon | 1857 | Commercial | Oldest surviving commercial building and oldest brick building in Portland |
| Hannah and Eliza Gorman House | Corvallis, Oregon | 1857 | Residence | |
| Jesse H. Caton House | Corvallis, Oregon | 1857 | Residence | |
| Palmer House | Dayton, Oregon | 1857 | Residence | |
| Sam Brown House | Gervais, Oregon | 1857 | Residence | |
| Fulton–Taylor House | The Dalles, Oregon | 1858 | Residence | |
| Jesse and Julia Harritt House | Salem, Oregon | 1858 | Residence | |
| John P. Walker House | Ashland, Oregon | 1858 | Residence | |
| John Sweek House | Tualatin, Oregon | 1858 | Residence | |
| Pleasant Grove Presbyterian Church | Salem, Oregon | 1858 | Church | |
| Rock Creek Methodist Church | Clackamas County, Oregon | 1858 | Church | |
| Stephen and Parthena M. Blank House | Forest Grove, Oregon | 1858 | Residence | |
| Andrew Smith House | Dayton, Oregon | 1859 | Residence | |
| Augustus Fanno Farmhouse | Beaverton, Oregon | 1859 | Residence | |
| Butteville Academy | Champoeg, Oregon | 1859 | School | |
| First Wasco County Courthouse | The Dalles, Oregon | 1859 | Courthouse | |
| Horace L. Dibble House | Molalla, Oregon | 1859 | Residence | |
| Hugh Fields House | Linn County, Oregon | 1859 | Residence | |
| John B. White House | Jackson County, Oregon | 1859 | Residence | |
| Spring Valley Presbyterian Church | Zena, Oregon | 1859 | Church | |
| 333 NE First Street | Oakland, Oregon | 1859 | Residence | Moved from Old Town Oakland in the 1870s to its current location; part of the Oakland Historic District |
| Waller Hall | Salem, Oregon | 1867 | University building | Oldest university building in use on West Coast |
| Cape Blanco Lighthouse | Curry County, Oregon | 1870 | Lighthouse | Oldest remaining lighthouse in the state |