# List of the oldest buildings in Louisiana

This article lists the oldest extant buildings in Louisiana, including extant buildings and structures constructed prior to and during the United States rule over Louisiana. Only buildings built prior to 1800 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 |
| Lafitte's Blacksmith Shop | New Orleans, Louisiana | ca. 1722-1732 | Blacksmith shop/bar | Located on Bourbon Street, where it is currently a bar. Built prior to 1803 Louisiana Purchase made New Orleans part of USA |
| Parlange Plantation House | Pointe Coupee Parish, Louisiana | 1750 | House | French colonial antebellum mansion |
| Old Ursuline Convent Museum | New Orleans, Louisiana | 1751 | Church convent | |
| St. Gabriel Roman Catholic Church | St. Gabriel, Louisiana | 1772-1776 | Church | The oldest church building in Louisiana and the entirety of the old Louisiana Purchase territory. |
| Francois Cousin House | Slidell, Louisiana | 1778-1790 | House | French Creole Cottage |
| Murphy Trading House | Natchitoches, Louisiana | 1786 or earlier | French Colonial Cottage | Early example of Bousillage Construction, Former Trading House on the Northern edge of the Louisiana Frontier, in Natchitoches |
| Destrehan Plantation | New Orleans, Louisiana | 1787-90 | House | French colonial antebellum mansion |
| Homeplace Plantation House | Hahnville, Louisiana | 1787-1791 | House | French colonial cottage on south side of Mississippi Riever |
| Madame John’s Legacy | New Orleans, Louisiana | 1789 | House | Example of Creole architecture |
| St. Louis Cathedral (New Orleans) | New Orleans, Louisiana | 1789-1796 | Church | Oldest cathedral in Louisiana; built on site of an earlier destroyed church |
| Armand Broussard House | Lafayette, Louisiana | 1790 | Residence | Oldest surviving Cajun house; relocated to Vermilionville Historic Village |
| Germain Bergeron House | Baton Rouge, Louisiana | 1790-1805 | Residence | In 2005 moved to the Rural Life Museum from east bank of Bayou Lafourche |
| The Presbytère | New Orleans, Louisiana | 1791 | Residence | Casas Curial or “Ecclesiastical House," which became a courthouse in 1834 |
| Magnolia Mound Plantation House | Baton Rouge, Louisiana | 1791 | Residence | Oldest house in Baton Rouge |
| Napoleon House | New Orleans, Louisiana | 1794 | Residence | Napoleon was invited to reside there |
| Bartolome Bosque House | New Orleans, Louisiana | 1795 | Residence | Located in 617 Chartres St, New Orleans, LA 70130 |
| Brennan's | New Orleans, Louisiana | 1795 | Residence | Former bank, now a restaurant in the French Quarter, located at 417 Royal Street, New Orleans, LA 70130 |
| The Cabildo | New Orleans, Louisiana | 1795-1799 | Government | Located in Jackson Square |
| Pitot House | New Orleans, Louisiana | 1799 | Residence | 440 Moss St., |