Based on the Greenland ice shelts melting, calculations show you're pretty good for another 28,000 years. That doesn't take into account any change in the ocea

Based on the Greenland ice shelts melting, calculations show you're pretty good for another 28,000 years. That doesn't take into account any change in the ocean temperature from the melted ice, and any cold changes that might create. The current historical rate of sea level rise is about 2-3mm per century. So if you're in a coast city there's probably a couple of centuries to go. Given the rate at which man-made islands can be created (or existing land masses extended) if necessary (Dubai, Hong Kong, Manhattan) I'd say there are much bigger problems to worry about.