Keep in mind that the beach will be located a little farther inland for the Millenials and their children. Especially in Florida. Rising water probably won't affect the supply of moderate price houses inland, but those fancy high rises might have some issues. And it will be hotter also, for them.
some speculation from the link:
What We’ll See
-Millennial generation Floridians, by this period in their senior years [2050-2075-, will be living in a Florida much changed from that of their youth.
-In Pinellas, as sea-level rise reaches three to four feet, major chunks of the barrier islands will be lost.
-In central Florida, Lake Monroe, far inland, swells to absorb connected lakes.
You’ll need a kayak to get to the door of Cedar Key City Hall.
-Kennedy Space Center and the commercial rocket industry grow increasingly isolated by rising water.
-Fort Lauderdale indeed becomes America’s Venice, with water at residential doorsteps, U.S. 1 under water and downtown awash at three feet and gone at four. The corporate descendant of Flagler’s railroad will need to span long stretches of Broward water — imitating his ill-fated original Overseas Railroad in the Keys — to remain operational.
-At three feet, Miami Beach is gone but for a spine close to the Atlantic. Brickell has standing water, and the Miami River widens up through central Miami-Dade. Water penetration from the former Everglades consumes western urbanized Miami-Dade.
-In the Keys, at 24 inches of rise, nuisance floods occur 672 times per year — nearly every daily high tide.
https://www.floridatrend.com/article/23305/sea-level-rise-and-florida-2050--2075
Yea and remember that Y2K hoax?
