Yeah, that's what the Art Bell guest said. We probably wouldn't notice any change in beach erosion rates if the sea level rises or falls a couple inches in half a decade Tides and storms would have a much bigger effect.
There are new satellite readings, last summer in fact, that indicate a reversal in the direction of change shape of the planet lately, the past 5 years, a flattening in the equatorial region. This makes the whole sea level problem a little less simple. Legally, though, land ownership, the situation is covered by survey practice whatever happens to the shoreline.
Storms also affect bay property. We had a house on Galveston Bay until last year. Several years ago a minor hurricane (I forget which one,maybe Alica) took the soil, 3 feet deep & 15 feet back from behind our bulkhead. I have a hunch that if a really bad storm took your house & sucked your entire lot out into the bay that you would *not* be able to fill your lot & rebuild your house. The EPA would probably come in & declare it a wetland. Bye bye bay front lot.