NASA has interactive flood maps using Google Maps as the backend. The maps let you see how a rise in sea levels effects various parts of the world. I checked, and it looks like up to about 13 meters (about 45 feet), we’re good where we are in this part of Lafayette, but we beachfront property by then.
Here’s Louisiana with a sea level rise of 5 meters (about 15 feet):
Louisiana's Coast with a Five Meter Rise in Sea Level